To accurately calibrate and maintain the HORIBA LAQUAtwin Pocket Testers, HORIBA provides a special selection of buffer, calibration and standard solutions. A convenient pack size of 6 x 14 ml of these solutions meets the requirements of the pocket testers as only a few drops are needed for calibration. This specific pack size helps to reduce waste and optimize efficiency during regular calibrations. The solutions available cover a variety of measurement ranges, allowing users to select the appropriate solution to suit their individual analysis or measurement needs: - pH buffer solutions: Solutions with pH values of 4.01 or 7.00 are available to calibrate the pH measurement. With these buffers it is possible to precisely regulate and control the pH measurement function of the LAQUAtwin Pocket Tester.- Conductivity standard solutions: 1413 μS/cm standard solutions ensure that the conductivity measurement of your devices is carried out precisely.- NaCl standard solutions: 0.5% or 5.0% NaCl solutions are available for the calibration of salinity measurement.- Ion standard solutions: HORIBA provides standard solutions to calibrate ion selective measurements. HORIBA provides standard solutions for sodium, potassium, nitrate and calcium, available in different concentrations: from low (e.g. 150 ppm) to high concentrations (e.g. 5000 ppm).- Fluoride ion standard solutions: For the calibration of fluoride measurements, HORIBA offers standard solutions with concentrations of 1 ppm and 10 ppm.- TISAB solution: A special solution for use with fluoride ion standard solutions to adjust the ionic strength of the sample for precise fluoride measurements.- ORP standard solution: For the calibration of redox measurements (ORP), HORIBA offers a solution with a redox potential of 225 mV. With these special solutions, the HORIBA LAQUAtwin pocket testers always provide accurate and reliable measurement results. The integrity of their measurement data and the lifetime of their devices can be ensured by regular calibration with these specifically formulated solutions. It is of great importance to select the appropriate calibration solution and standard solution to maintain the accuracy of measurements and ensure the reliability of water quality measurements in various applications. Manufacturer Part No. 3200997084

Frequently Asked Questions Why do I need a buffer or calibration solution? It allows you to set up your measuring device correctly and ensures reliable readings. How often should I calibrate my measuring device? That depends on how often you use it. If used frequently, regular calibration is recommended. Is the Milwaukee calibration solution also suitable for other measuring devices? In many cases, yes, provided the same measurement range is used. Can I use an opened solution more than once? Yes, as long as it remains clean and is stored correctly. How do I store buffer and calibration solutions correctly? It is best to store them in a cool, dry place and keep them tightly sealed. How do I know when I should recalibrate? If the readings seem unusual or change significantly.

Ready-to-use 200 mV redox buffer solution for the calibration and verification of ORP electrodes. Reliable ORP reference solution for precise redox measurements. Neomeris Redox Buffer Solution 200 mV ± 5 mV (25 °C) – ORP Reference Solution Defined redox reference for calibration in the lower ORP measurement range. The Neomeris redox buffer solution with a value of 200 mV ± 5 mV at 25 °C is a ready-to-use reference solution for calibrating and checking redox (ORP) electrodes. It ensures reliable and reproducible measurement results. The solution is used for regular calibration of ORP measuring devices. The known reference value makes it possible to detect measurement deviations at an early stage. What is a 200 mV redox buffer solution used for? A redox buffer solution 200 mV ± 5 mV (25 °C), 250 ml is used for the calibration and verification of redox (ORP) measuring devices. It provides a precisely defined reference potential in the lower mV range. It is used to adjust a redox measuring device so that it displays correct measurement values and to check the electrode for drift, aging or contamination. Typical application areas for redox measurements include drinking water and wastewater analysis, aquaristics, environmental monitoring, and industrial processes with weakly oxidizing or slightly reducing conditions. The value of 200 mV lies in the lower oxidation range and is suitable for systems with low redox potential. What do the specifications on the bottle mean? 200 mV This is the target value of the redox potential of the solution at the reference temperature of 25 °C. ± 5 mV This indicates the tolerance or accuracy. The actual value lies between 195 mV and 205 mV. (25 °C) The specified value applies exactly at 25 °C because the redox potential depends on temperature. 250 ml This is the filling volume of the solution. The larger quantity is suitable for regular calibrations or use in laboratories or operational environments. The solution is used to precisely calibrate or verify a redox measuring device in the lower mV range, where 200 mV at 25 °C is the defined reference value with an accuracy of ± 5 mV. Neomeris – For stable and precise ORP measurements. Ensure the functionality of your redox sensors and achieve reliable measurement results with the professional buffer solutions from Neomeris including a certificate of analysis. Rely on quality, safety and convenience when calibrating your measuring devices with the color-coded, ready-to-use solutions from Neomeris. Frequently asked questions Where can I find the safety data sheet for the solution I want to use? The safety data sheet is included in printed form with the delivery of the goods. The safety data sheet can be viewed or downloaded at any time in the download area of the online shop. What bottle sizes are available? Generally, there are 60/70 ml, 250 ml, 500 ml and 1,000 ml bottles. There is one exception, for example, with brands such as Hanna, where bags are sold instead of bottles. How long do the solutions last? The shelf life is printed on the product label. Upon delivery, the shelf life is at least 7 months. Can the solutions still be used after the expiry date? No, because the function and quality can no longer be guaranteed after the best-before date has expired. How can I dispose of the solutions? Please refer to the safety data sheet for more detailed information on the disposal of the solutions. Disposal must be carried out in accordance with official regulations. What is the emergency number for acute poisoning? The emergency number for the North Poison Information Centre is +49 551-19240 and is available 24/7.

Neomeris Redox Buffer Solution 200 mV is excellent for reliable calibration. With a volume of 500 ml and easy dosing, it is ideal for regular use in many different areas. Neomeris Redox Buffer Solution 200 mV ± 5 mV (25 °C), 500 ml – Reliable calibration for precise ORP measurements The Neomeris redox buffer solution with a stable value of 200 mV ± 5 mV at 25 °C is the ideal solution for calibrating redox electrodes (ORP sensors). It ensures precise and reproducible measurement results in demanding applications in water and environmental analysis, wastewater technology, and industrial process control. Product advantages at a glance: Precise calibration: The solution offers reliable accuracy of ±5 mV at 25 °C – ideal for precise requirements. Certificate of analysis included: Each bottle comes with a free certificate confirming the quality and accuracy of the solution. Safe handling: The innovative hygienic cap protects the solution from contamination and ensures clean application. Easy dosing: Squeezing the bottle dispenses the required amount of solution into the upper part – perfect for direct calibration without additional accessories. 500 ml content: Ideal for regular use in laboratories and industrial processes with higher consumption. Areas of application: Water and environmental analysis: Control of the redox potential in natural waters and in drinking water treatment. Wastewater technology: Monitoring of biological reaction processes in sewage treatment plants. Industrial applications: Process control in chemical and pharmaceutical production. Neomeris – precision you can rely on. Ensure the functionality of your ORP sensors and achieve consistent measurement results – with professional redox buffer solutions from Neomeris. The practical 500 ml bottle with a hygienic dosing system makes the Neomeris calibration solution ideal for regular use in professional applications. Benefit from high precision, convenient use, and consistently reliable measurement results – day after day. Frequently asked questions Where can I find the safety data sheet for the solution I want to use? The safety data sheet is included in printed form with the delivery of the goods. The safety data sheet can be viewed or downloaded at any time in the download area of the online shop. What bottle sizes are available? Generally, there are 60/70 ml, 250 ml, 500 ml and 1,000 ml bottles. There is one exception, for example, with brands such as Hanna, where bags are sold instead of bottles. How long do the solutions last? The shelf life is printed on the product label. Upon delivery, the shelf life is at least 7 months. Can the solutions still be used after the expiry date? No, because the function and quality can no longer be guaranteed after the best-before date has expired. How can I dispose of the solutions? Please refer to the safety data sheet for more detailed information on the disposal of the solutions. Disposal must be carried out in accordance with official regulations. What is the emergency number for acute poisoning? The emergency number for the North Poison Information Centre is +49 551-19240 and is available 24/7.

For reliable and consistent measurements, the ready-to-use Neomeris Redox Buffer Solution 200 mV is ideal. It is used to calibrate your electrodes and related measuring devices. Neomeris Redox Buffer Solution 200 mV ± 5 mV (25 °C), 60 ml - Precise calibration for reliable ORP measurements The Neomeris Redox Buffer Solution with a defined value of 200 mV ± 5 mV at 25 °C is the perfect choice for calibrating redox electrodes (ORP sensors). It ensures reliable and reproducible results in demanding applications such as water and environmental analysis, wastewater technology, and industrial process control. Product Benefits at a Glance Exact Calibration: Constant redox potential of 200 mV ± 5 mV at 25 °C – ideal for precise ORP measurements. Ready to Use: Immediately usable – no mixing or dilution required. Compact 60 ml Bottle: Ideal for single calibrations or mobile applications. Reliable Quality: Designed for professional use in laboratories and industry. Where Are Redox Potential Measurements Needed? Typical areas of application are Water and Environmental Analysis: Monitoring redox potential in natural waters and drinking water treatment. Wastewater Technology: Monitoring biological reaction processes in treatment plants. Industrial Applications: Process control in chemical and pharmaceutical production. Why Use a Redox Buffer Solution? A Redox Buffer Solution 200 mV ± 5 mV (25 °C), 60 ml is used to calibrate and verify redox (ORP) measuring devices. It serves as a reference solution with a precisely defined redox potential. It is needed for: Setting a redox meter so that it displays accurate mV readings. Checking the electrode for aging or contamination. Applications in industrial processes, environmental analysis, aquaristics, and drinking or wastewater monitoring. The value of 200 mV is in the lower oxidation range and is suitable for monitoring weakly oxidizing or slightly reducing systems. A measuring device works most reliably when regularly checked with a reference solution. What Do the Bottle Labels Mean? 200 mV This is the target redox potential of the solution at 25 °C. ± 5 mV This is the tolerance. The actual value ranges from 195 mV to 205 mV. (25 °C) The stated value applies exactly at 25 °C, as redox potential is temperature-dependent. 60 ml This is the filling volume of the solution. The solution is used to calibrate or check a redox meter in the lower mV range, with 200 mV at 25 °C being the defined reference value with ± 5 mV accuracy. Neomeris – For Stable and Precise ORP Measurements Ensure the functionality of your redox sensors and achieve consistent results with Neomeris professional buffer solutions. Rely on quality, safety, and convenience when calibrating your devices with Neomeris ready-to-use, color-coded solutions. Frequently asked questions Where can I find the safety data sheet for the solution I want to use? The safety data sheet is included in printed form with the delivery of the goods. The safety data sheet can be viewed or downloaded at any time in the download area of the online shop. What bottle sizes are available? Generally, there are 60 ml, 250 ml, 500 ml and 1,000 ml bottles. There is one exception, for example, with brands such as Hanna, where bags are sold instead of bottles. How long do the solutions last? The shelf life is printed on the product label. Upon delivery, the shelf life is at least 7 months. Can the solutions still be used after the expiry date? No, because the function and quality can no longer be guaranteed after the best-before date has expired. How can I dispose of the solutions? Please refer to the safety data sheet for more detailed information on the disposal of the solutions. Disposal must be carried out in accordance with official regulations. What is the emergency number for acute poisoning? The emergency number for the North Poison Information Centre is +49 551-19240 and is available 24/7.

Neomeris Redox Buffer Solution 475 mV is ideal for calibrating redox electrodes. With a content of 500 ml, it is perfect for regular use in various areas of application. Neomeris Redox Buffer Solution 475 mV ± 5 mV (25 °C), 500 ml - Precise calibration for reliable ORP measurements The Neomeris redox buffer solution with a stable value of 475 mV ± 5 mV at 25 °C is the ideal solution for calibrating redox electrodes (ORP sensors). It ensures precise and consistent measurement results in demanding applications in water and environmental analysis, wastewater technology, and industrial process control. Product advantages at a glance: Precise calibration: The solution provides a reliable redox potential of 475 mV ± 5 mV at 25 °C – ideal for precise requirements. Safe handling: The special hygienic closure protects the solution from contamination and enables clean dosing. Certificate of analysis included: Each 250 ml and 500 ml bottle comes with a certificate confirming the quality and accuracy of the solution. Easy to use: By squeezing the bottle, the required amount of solution is transferred to the upper chamber – perfect for direct calibration without additional accessories. 500 ml content: Ideal for regular use in laboratories and industrial applications. Areas of application: Water and environmental analysis: Monitoring the redox potential in natural waters and drinking water treatment. Wastewater technology: Monitoring biological reaction processes in wastewater treatment plants. Industrial applications: Process control in chemical and pharmaceutical production. Neomeris – For stable and precise ORP measurements Rely on quality and safety when calibrating your redox sensors – with professional buffer solutions from Neomeris. The practical 500 ml bottle with a hygienic dosing system makes the Neomeris calibration solution ideal for regular use in professional applications. Benefit from high precision, convenient use, and consistently reliable measurement results – day after day. Frequently asked questions Where can I find the safety data sheet for the solution I want to use? The safety data sheet is included in printed form with the delivery of the goods. The safety data sheet can be viewed or downloaded at any time in the download area of the online shop. What bottle sizes are available? Generally, there are 60/70 ml, 250 ml, 500 ml and 1,000 ml bottles. There is one exception, for example, with brands such as Hanna, where bags are sold instead of bottles. How long do the solutions last? The shelf life is printed on the product label. Upon delivery, the shelf life is at least 7 months. Can the solutions still be used after the expiry date? No, because the function and quality can no longer be guaranteed after the best-before date has expired. How can I dispose of the solutions? Please refer to the safety data sheet for more detailed information on the disposal of the solutions. Disposal must be carried out in accordance with official regulations. What is the emergency number for acute poisoning? The emergency number for the North Poison Information Centre is +49 551-19240 and is available 24/7.

The Neomeris redox buffer solution 475 mV is ideal for the calibration of redox measuring devices and ORP electrodes. Neomeris Redox Buffer Solution 475 mV ± 5 mV (25 °C), 250 ml – Defined ORP Reference Solution Standard solution for calibrating redox measuring devices and ORP electrodes The Neomeris redox buffer solution with a stable value of 475 mV ± 5 mV at 25 °C is specifically designed for the calibration of redox electrodes (ORP sensors). In sensitive fields such as water and environmental analysis, wastewater technology, and industrial processes, it enables reliable and reproducible measurement results. At 25 °C the solution provides a stable redox potential of 475 mV (± 5 mV). The integrated hygiene cap reliably protects the solution from contamination and ensures consistently high quality throughout its service life. What is a 475 mV redox buffer solution used for? A redox buffer solution 475 mV ± 5 mV (25 °C), 250 ml is used for calibration and verification of redox (ORP) measuring devices. It provides a defined reference potential used to check or adjust the accuracy of a redox electrode. It is used: To adjust a redox measuring device so it displays correct mV values. To regularly check the electrode function (detecting drift or contamination). Typical applications where redox potential is measured include drinking water and wastewater monitoring, swimming pool technology, aquaristics, environmental analysis, and industrial processes. The value of 475 mV lies in the medium oxidation range and is suitable for systems with moderate oxidation potential. What do the specifications on the bottle mean? 475 mV This is the target redox potential of the solution at 25 °C. ± 5 mV This is the tolerance. The actual value lies between 470 mV and 480 mV. (25 °C) The specified value applies exactly at 25 °C because redox potential depends on temperature. 250 ml This is the filling volume of the bottle. The larger quantity is suitable for frequent calibrations or regular use in laboratories or industrial environments. The solution is used to precisely calibrate or check a redox measuring device in the medium mV range, where 475 mV at 25 °C is the defined reference value with an accuracy of ± 5 mV. Neomeris – For stable and precise ORP measurements. Rely on quality, safety and full traceability – with professional Neomeris calibration solutions including a certificate of analysis. Ensure the functionality of your redox sensors and achieve reliable measurement results with the professional buffer solutions from Neomeris. Trust in quality, safety and convenience when calibrating your measuring devices using the color-coded, ready-to-use solutions from Neomeris. The practical 250 ml bottle with a hygienic dosing system makes the Neomeris calibration solution ideal for regular use in professional applications. Benefit from high precision, convenient handling and consistently reliable measurement results – day after day. Frequently asked questions Where can I find the safety data sheet for the solution I want to use? The safety data sheet is included in printed form with the delivery of the goods. The safety data sheet can be viewed or downloaded at any time in the download area of the online shop. What bottle sizes are available? Generally, there are 60/70 ml, 250 ml, 500 ml and 1,000 ml bottles. There is one exception, for example, with brands such as Hanna, where bags are sold instead of bottles. How long do the solutions last? The shelf life is printed on the product label. Upon delivery, the shelf life is at least 7 months. Can the solutions still be used after the expiry date? No, because the function and quality can no longer be guaranteed after the best-before date has expired. How can I dispose of the solutions? Please refer to the safety data sheet for more detailed information on the disposal of the solutions. Disposal must be carried out in accordance with official regulations. What is the emergency number for acute poisoning? The emergency number for the North Poison Information Centre is +49 551-19240 and is available 24/7.

The ready-to-use Neomeris redox buffer solution with an exactly known value of 475 mV is used for the calibration of ORP electrodes and the associated measuring devices. This ensures precise measurement results. Thanks to easy dosing and simple handling, it is ideal for single calibrations. Neomeris Redox Buffer Solution 475 mV ± 5 mV (25 °C), 60 ml Compact Solution for Precise ORP Calibration The Neomeris redox buffer solution with a stable value of 475 mV ± 5 mV at 25 °C is specifically designed for the calibration of redox electrodes (ORP sensors). It enables reliable and reproducible measurement results in sensitive areas such as water and environmental analysis, wastewater technology, and industrial process control. Product Advantages at a Glance Precise Calibration: The solution provides an accurate redox potential of 475 mV ± 5 mV at 25 °C – ideal for demanding applications. Ready to Use: Immediately usable – no mixing or dilution required. Compact 60 ml Bottle: Perfect for single calibrations, mobile use, or occasional applications. Reliable Quality: Developed for professional requirements in laboratories and industry. Application Areas Water and Environmental Analysis: Monitoring the redox potential in natural waters and during drinking water treatment. Wastewater Technology: Monitoring biological reaction processes in wastewater treatment plants. Industrial Applications: Process control in chemical and pharmaceutical production. What is a Redox Buffer Solution Used For? A redox buffer solution 475 mV ± 5 mV (25 °C), 60 ml is used for the calibration and verification of redox (ORP) measuring devices that measure the oxidation or reduction potential of a solution. It is used for: Adjusting a redox measuring device so that readings are accurate and reliable. Measurements in laboratories, water treatment, environmental analysis, or industrial processes where the redox state is monitored. Particularly suitable for regular checking of the measuring electrode. A value of 475 mV typically corresponds to a moderately oxidizing system, e.g., lightly chlorinated water or weakly oxidizing solutions. What Do the Details on the Bottle Mean? 475 mV This is the target value of the redox potential at 25 °C. The solution is chemically stable to provide exactly this value. ± 5 mV This is the tolerance or accuracy. The actual redox value is at most 5 mV above or below 475 mV (i.e., between 470 mV and 480 mV). This ensures precise calibration. (25 °C) The value applies exactly at 25 °C, as the redox potential is temperature-dependent. Many devices account for this via temperature compensation. 60 ml This is the filling volume of the solution in the bottle. The solution is used to reliably calibrate a redox measuring device in the medium oxidation range, where 475 mV at 25 °C is the defined reference value with a tolerance of ± 5 mV. Neomeris – For Stable and Precise ORP Measurements Ensure the functionality of your redox sensors and achieve consistent measurement results with the professional buffer solutions from Neomeris. Rely on quality, safety, and convenience when calibrating your measuring devices with the color-coded, ready-to-use solutions from Neomeris. Frequently asked questions Where can I find the safety data sheet for the solution I want to use? The safety data sheet is included in printed form with the delivery of the goods. The safety data sheet can be viewed or downloaded at any time in the download area of the online shop. What bottle sizes are available? Generally, there are 60 ml, 250 ml, 500 ml and 1,000 ml bottles. There is one exception, for example, with brands such as Hanna, where bags are sold instead of bottles. How long do the solutions last? The shelf life is printed on the product label. Upon delivery, the shelf life is at least 7 months. Can the solutions still be used after the expiry date? No, because the function and quality can no longer be guaranteed after the best-before date has expired. How can I dispose of the solutions? Please refer to the safety data sheet for more detailed information on the disposal of the solutions. Disposal must be carried out in accordance with official regulations. What is the emergency number for acute poisoning? The emergency number for the North Poison Information Centre is +49 551-19240 and is available 24/7.

The Neomeris redox buffer solution 650 mV in the 60 ml bottle is ideal for single calibrations of your measuring devices. It can be used in various areas, such as water and environmental analysis. Neomeris Redox Buffer Solution 650 mV ± 5 mV (25 °C), 60 ml - Compact Solution for Precise ORP Calibration The Neomeris redox buffer solution with a stable value of 650 mV ± 5 mV at 25 °C is specifically designed for the calibration of redox electrodes (ORP sensors). It enables reliable and reproducible measurement results in demanding applications in water and environmental analysis, wastewater technology, as well as industrial process control. Product Advantages at a Glance Precise Calibration: The solution provides an accurate redox potential of 650 mV ± 5 mV at 25 °C – ideal for demanding applications. Ready to Use: Immediately usable – no mixing or dilution required. Compact 60 ml Bottle: Perfect for single calibrations, mobile use, or occasional applications. Reliable Quality: Developed for professional requirements in laboratories and industry. Application Areas Water and Environmental Analysis: Monitoring the redox potential in natural waters and during drinking water treatment. Wastewater Technology: Monitoring biological reaction processes in wastewater treatment plants. Industrial Applications: Process control in chemical and pharmaceutical production. What is a Redox Buffer Solution Used For? A redox buffer solution 650 mV ± 5 mV (25 °C), 60 ml is used for the calibration and verification of redox (ORP) measuring devices that measure the redox potential of solutions. It is used for: Adjusting a redox measuring device so that the displayed values are reliable and compliant with standards. Measurements in laboratories, environmental analysis, water treatment, or industrial processes where oxidation or reduction states must be monitored. Particularly useful for regular checking of the measuring electrode and ensuring measurement accuracy. A redox reference value such as 650 mV typically corresponds to a strongly oxidizing system, e.g., chlorine or oxygen solutions. What Do the Details on the Bottle Mean? 650 mV This is the exact target value of the redox potential of the solution at the reference temperature. Its redox potential is chemically stable and defined. ± 5 mV This is the tolerance or accuracy. The actual redox value is at most 5 mV above or below 650 mV (i.e., between 645 mV and 655 mV). This indicates the precision of the solution. (25 °C) The specified value applies exactly at 25 °C, as the redox potential is temperature-dependent. Many redox measuring devices therefore include temperature compensation. 60 ml This is the filling volume of the bottle. The solution is used to precisely adjust or verify a redox measuring device, where 650 mV at 25 °C is the defined reference value with a tolerance of ± 5 mV. Neomeris – For Stable and Precise ORP Measurements Ensure the functionality of your redox sensors and achieve reliable measurement results with the professional buffer solutions from Neomeris. Rely on quality, safety, and convenience when calibrating your measuring devices with the color-coded, ready-to-use solutions from Neomeris. Frequently asked questions Where can I find the safety data sheet for the solution I want to use? The safety data sheet is included in printed form with the delivery of the goods. The safety data sheet can be viewed or downloaded at any time in the download area of the online shop. What bottle sizes are available? Generally, there are 60 ml, 250 ml, 500 ml and 1,000 ml bottles. There is one exception, for example, with brands such as Hanna, where bags are sold instead of bottles. How long do the solutions last? The shelf life is printed on the product label. Upon delivery, the shelf life is at least 7 months. Can the solutions still be used after the expiry date? No, because the function and quality can no longer be guaranteed after the best-before date has expired. How can I dispose of the solutions? Please refer to the safety data sheet for more detailed information on the disposal of the solutions. Disposal must be carried out in accordance with official regulations. What is the emergency number for acute poisoning? The emergency number for the North Poison Information Centre is +49 551-19240 and is available 24/7.

The Neomeris redox buffer solution with a defined redox potential of 650 mV ± 5 mV at 25 °C serves as a reliable reference for calibrations in the high ORP measurement range. Neomeris Redox Buffer Solution 650 mV ± 5 mV (25 °C), 250 ml – ORP Reference Solution Stable redox reference for calibrations in the high ORP measurement range The Neomeris redox buffer solution with a stable value of 650 mV ± 5 mV at 25 °C is a standardized reference solution for calibrating redox measurement systems. It enables reliable and reproducible measurement results. The redox buffer solution supports reliable calibration of ORP electrodes and contributes to stable and comparable measurement results. The redox buffer solution is specifically designed for the regular calibration of ORP electrodes. It is suitable for laboratory applications as well as for use in technical and industrial processes where high redox potentials must be monitored. What is a 650 mV redox buffer solution used for? A redox buffer solution 650 mV ± 5 mV (25 °C), 250 ml is used for calibration and functional testing of redox (ORP) measuring devices. It serves as a reference solution with a precisely defined oxidation-reduction potential. It is used to adjust a redox measuring device so that it displays correct mV values and to regularly check the redox electrode for drift, aging or contamination. Typical areas where redox values are measured include industrial processes, environmental analysis, aquaristics, swimming pool technology, and drinking water or wastewater monitoring. The value of 650 mV represents a strongly oxidizing environment (e.g. chlorinated water). It is particularly suitable for measurement ranges with high oxidation potentials. What do the specifications on the bottle mean? 650 mV This is the target value of the redox potential of the solution at the reference temperature. ± 5 mV This indicates the tolerance or accuracy. The actual value lies between 645 mV and 655 mV. (25 °C) The specified value applies exactly at 25 °C because the redox potential is temperature dependent. 250 ml This is the filling volume of the bottle. The larger quantity is suitable for frequent calibrations or for use in laboratories or operations. The solution is used to precisely calibrate or check a redox measuring device in the high oxidation range, where 650 mV at 25 °C is the defined reference value with an accuracy of ± 5 mV. Neomeris – For stable and precise ORP measurements. Ensure the functionality of your redox sensors and achieve reliable measurement results with the professional buffer solutions from Neomeris. Rely on quality, safety and convenience when calibrating your measuring devices with the color-coded, ready-to-use solutions from Neomeris. Frequently asked questions Where can I find the safety data sheet for the solution I want to use? The safety data sheet is included in printed form with the delivery of the goods. The safety data sheet can be viewed or downloaded at any time in the download area of the online shop. What bottle sizes are available? Generally, there are 60/70 ml, 250 ml, 500 ml and 1,000 ml bottles. There is one exception, for example, with brands such as Hanna, where bags are sold instead of bottles. How long do the solutions last? The shelf life is printed on the product label. Upon delivery, the shelf life is at least 7 months. Can the solutions still be used after the expiry date? No, because the function and quality can no longer be guaranteed after the best-before date has expired. How can I dispose of the solutions? Please refer to the safety data sheet for more detailed information on the disposal of the solutions. Disposal must be carried out in accordance with official regulations. What is the emergency number for acute poisoning? The emergency number for the North Poison Information Centre is +49 551-19240 and is available 24/7.

Neomeris Redox Buffer Solution 650 mV is the ideal solution for calibrating redox electrodes (ORP sensors). Its easy dosing and safe handling make this solution perfect for a wide range of applications. Neomeris Redox Buffer Solution 650 mV ± 5 mV (25 °C), 500 ml - Precise calibration for demanding ORP measurements The Neomeris redox buffer solution with a stable value of 650 mV ± 5 mV at 25 °C is the ideal solution for calibrating redox electrodes (ORP sensors). It ensures reliable and reproducible measurement results in demanding applications in water and environmental analysis, wastewater technology, and industrial process control. Product advantages at a glance: Precise calibration: The solution provides a stable redox potential of 650 mV ± 5 mV at 25 °C – ideal for high-precision requirements. Certificate of analysis included: Each 500 ml bottle comes with a certificate documenting the quality and accuracy of the solution. Safe handling: The special hygienic cap reliably protects the solution from contamination. Easy dosing: By squeezing the bottle, the required amount of solution is transferred to the upper chamber – ideal for direct calibration without additional accessories. 500 ml content: Perfect for regular use in laboratories and industrial applications with higher consumption. Areas of application: Water and environmental analysis: Monitoring the redox potential in natural waters and drinking water treatment. Wastewater technology: Monitoring biological reaction processes in wastewater treatment plants. Industrial applications: Process control in chemical and pharmaceutical production. Neomeris – For stable and precise ORP measurements. Rely on quality, safety, and complete traceability – with professional calibration solutions from Neomeris, including a certificate of analysis. The practical 500 ml bottle with a hygienic dosing system makes the Neomeris calibration solution ideal for regular use in professional environments. Benefit from high precision, convenient handling, and consistently reliable measurement results – day after day. Frequently asked questions Where can I find the safety data sheet for the solution I want to use? The safety data sheet is included in printed form with the delivery of the goods. The safety data sheet can be viewed or downloaded at any time in the download area of the online shop. What bottle sizes are available? Generally, there are 60/70 ml, 250 ml, 500 ml and 1,000 ml bottles. There is one exception, for example, with brands such as Hanna, where bags are sold instead of bottles. How long do the solutions last? The shelf life is printed on the product label. Upon delivery, the shelf life is at least 7 months. Can the solutions still be used after the expiry date? No, because the function and quality can no longer be guaranteed after the best-before date has expired. How can I dispose of the solutions? Please refer to the safety data sheet for more detailed information on the disposal of the solutions. Disposal must be carried out in accordance with official regulations. What is the emergency number for acute poisoning? The emergency number for the North Poison Information Centre is +49 551-19240 and is available 24/7.