pH

Testoval pH-Chlor DPD Reagents Refill Pack The Testoval pH-Chlor DPD reagents refill pack is used to supplement an existing Testoval pH-Chlor analysis kit and enables continued fast and reliable manual control of pH value and chlorine content in water. The reagents are specially developed for colorimetric test methods. After adding the reagents, a characteristic color change occurs, which is then evaluated using the color comparison system of the test kit. This allows both the pH value and the concentration of free and total chlorine to be determined easily without electronic measuring devices. The refill pack ensures that existing test kits can continue to be used for routine analyses. Scope of delivery of the Testoval pH-Chlor DPD refill pack from Heyl The set contains all necessary reagents for carrying out further analyses. You receive a complete set of reagents for pH and chlorine determination, sufficient for approx. 70 analyses. The color comparator, cuvette, and other accessories are not included in the refill pack. These can be ordered individually or together as part of the complete test kit via our online shop. Advantages of the pH-Chlor DPD refill pack from Heyl The refill pack is a practical refill solution for the existing Testoval pH-Chlor DPD test kit. It enables the simultaneous determination of pH value as well as free and combined chlorine. It provides fast measurement results within a few minutes. Thanks to the test kit, the analysis can be carried out without electronic measuring devices and can be used independently of location. Possible application areas of the Heyl test kit for pH-chlorine measurement The reagents are suitable for various water analysis applications, such as monitoring water quality in swimming pools and wellness facilities, supervising disinfection processes in water treatment systems, as well as routine checks in technical water systems and service and maintenance operations in the field of water analysis. Technical Data Measurement parameters: pH value and chlorine (free and total chlorine) pH measuring range: pH 6.8 – 8 Chlorine measuring range: 0 – 1 mg/l Readable reference values: pH 6.8 / 7.4 / 8 Chlorine 0.1 / 0.5 / 1 mg/l Number of analyses: approx. 70 Measurement time: approx. 3 minutes Matching products available in our online shop Item number 410601: Testoval pH-Chlor DPD Test Kit – complete test kit for manual water analysis Item number 410603: Replacement Color Comparator pH-Chlor DPD

Color comparator, cuvettes and additional accessories are not included in the refill pack The Testoval pH range 5.5 to 8 reagents refill pack from Heyl is used to replenish an existing Testoval pH test kit. It enables continued fast and reliable manual determination of the pH value in water. The reagents are specially developed for colorimetric analysis. After being added to the water sample, a characteristic color change occurs, which is visually evaluated using the color comparator of the test kit. This allows the pH value to be determined easily without electronic measuring devices. The refill pack ensures that the existing test kit can continue to be used for further routine analyses and is particularly suitable for regular monitoring in water treatment, industry, or laboratories. Advantages of the refill pack It is a practical refill solution for the Testoval pH test kit and is ideal for regular routine and control measurements. The optical color comparison allows pH values to be checked quickly and reliably. No electronic measuring devices are required for the measurement. Application areas of the Testoval pH test kit from Heyl The refill pack, together with the test kit, can be used in many areas such as monitoring the pH value in drinking and process water, supervising water treatment and dosing systems, and routine analyses in laboratories and technical facilities. Technical data of the Testoval pH refill pack from Heyl Measurement parameter: pH value Measuring range: pH 5.5 – 8 Readable reference values: 5.5 / 6 / 6.5 / 7 / 7.5 / 8 Number of analyses: approx. 250 Measurement time: approx. 1 minute Measurement principle: colorimetric color comparison Also available in our online shop: Item number: 410610 Complete test kit Testoval pH 5.5–8 Item number: 410612 Replacement color comparator pH 5.5–8

Testoval pH Range 8 to 12 Reagents Refill Pack This refill pack allows continued use of the Testoval pH range 8 to 12 test kit from Heyl without purchasing a new one. It is perfect for regular measurements and provides reliable, fast results. The Testoval pH range 8 to 12 reagents refill pack is the ideal addition to existing Testoval pH test kits in the alkaline measuring range. It enables continued reliable and simple determination of pH value without additional measuring devices. The specially coordinated reagents produce a distinct color change after being added to the water sample. This is visually evaluated using the color comparison system of the test kit, allowing the pH value to be determined quickly and accurately. Your advantages with our refill pack from Heyl for pH measurement The refill pack is ideal for regular measurements and ensures that existing test kits can continue to be used long-term. It is perfect for routine and control measurements and delivers reliable results through the visual color comparison method. The individual values pH 8 mg/l, 8.5 mg/l, 9 mg/l, 10 mg/l, 11 mg/l and 12 mg/l can be read by optical color comparison. The scope of delivery includes only the reagents for simple concentration determination. 1 set of reagents Measurement time: approx. 1 minute Analyses: approx. 250 Possible application areas The reagents are suitable for various water analysis applications such as monitoring alkaline process and wastewater, routine analyses in laboratories and industry, as well as quality and environmental controls and the monitoring of technical systems and cooling circuits. This product is only a reagents refill pack; the color comparator, cuvettes, and additional accessories are not included. Matching products available in our online shop: Item number 410616: Testoval pH range 8 to 12 test kit – complete set for pH analysis Item number 410618: Replacement color comparator pH 8–12 – device for optical evaluation

Testoval® pH Chlor DPD Test Kit – Color Comparison for pH and Chlorine Quick and reliable determination of pH value and free and total chlorine in water The Testoval pH-Chlor DPD Test Kit is designed for rapid manual analysis of pH and chlorine. The pH measurement range is 6.8–8.0, while the chlorine content is measured in the range of 0–1 mg/L. The values pH 6.8, 7.4, and 8.0 as well as 0.1 mg/L, 0.5 mg/L, and 1.0 mg/L chlorine can be read safely using optical color comparison. Original Heyl Test Kit for Rapid Determination of pH and Chlorine The Testoval® pH-Chlor DPD Test Kit from Heyl is an original color comparison kit for rapid manual analysis of pH and both free and combined (total) chlorine in water. It was specifically developed for the requirements of swimming pool water monitoring. Advantages of the Original Testoval® pH-Chlor DPD Test Kit The Testoval® pH-Chlor DPD Test Kit combines two important water parameters in one set (pH and chlorine), enabling particularly efficient water analysis. With a measurement time of approximately 3 minutes per test, around 70 measurements can be performed – ideal for routine monitoring during operation. As an original Heyl product, the test kit ensures high measurement reliability, reproducible results, and maximum reagent compatibility. It helps operators maintain stable water quality, control disinfection processes, and reliably meet hygienic standards. Frequently asked questions How long do Heyl chemicals last? The shelf life is printed on the label of each product. Upon delivery, the guaranteed shelf life is at least 7 months. Can Heyl reagents also be purchased individually? That depends on the specific item to be ordered. For Testoval products, only the complete refill pack can be ordered. The individual small bottles cannot be reordered separately. For the Duroval test kit, the individual components of the refill pack can also be reordered separately. Can the indicator and titration solution be purchased separately? Yes, this is possible for the Duroval product range. Where can I find the safety data sheet? The safety data sheet can be found directly with the product in our shop or separately in the download area under the relevant heading. How can the chemicals be disposed of? Disposal instructions can be found in section 13 of the safety data sheet. Disposal must be carried out in accordance with official regulations. Can the chemicals still be used after the expiry date? No, the chemicals can no longer be used after the expiry date. After the expiry date, accurate measurement results can no longer be guaranteed. How should Heyl chemicals be stored? Section 7 of the safety data sheet contains all relevant information on the storage of chemicals. The recommended storage temperature should be between 15-25°C.

Testoval pH Range 5.5 to 8 Test Kit The test kit covers a measuring range from pH 5.5 to pH 8 and allows easy reading of values via defined color levels. No electronic device is required when performing measurements with the test kit. The Testoval pH range 5.5 to 8 test kit from Heyl is a colorimetric color comparison set for fast and manual determination of pH value in water. It is particularly suitable for routine analyses where simple and reliable control without electronic measuring devices is required. By adding the included reagents, a characteristic color change of the water sample occurs. This is then visually compared with reference values using the color comparator. In this way, the pH value can be determined quickly and reliably. Scope of delivery of the test kit from Heyl The test kit contains all components required to carry out the analysis. These include reagents for the pH measurement reaction, the color comparator for visual evaluation, as well as measuring tubes, a measuring spoon, and a cuvette. This makes the test kit ready for immediate use and suitable for both stationary and mobile applications. Advantages of the Testoval pH test kit with measuring range 5.5 to 8 Thanks to the simple application via optical color comparison, fast manual determination of pH value in water is possible. No electronic measuring devices or power supply are required to operate the test kit. The test kit delivers reliable and precise results within a very short time. Application areas of the pH test kit from Heyl The Testoval pH test kit is suitable for various areas of water analysis, such as monitoring drinking and process water, supervising water treatment systems, routine checks in industry and laboratories, as well as quality control in environmental and process analysis. Technical Data Measuring range: pH 5.5 – 8 Readable values: 5.5 / 6 / 6.5 / 7 / 7.5 / 8 Number of analyses: approx. 250 Measurement time: approx. 1 minute Measurement principle: colorimetric color comparison Matching products such as the refill pack and replacement color comparator are also available in our shop: Item number: 410611 Testoval pH Range 5.5 to 8 - Reagents Refill Pack enables an additional 250 analyses Item number: 410612 Replacement Color Comparator

Testoval pH Range 8 to 12 Test Kit The Testoval pH test kit from Heyl with a measuring range of 8–12 is ready for immediate use and is suitable for both stationary and mobile applications. With the help of the color comparator, the values can be read quickly and easily. The Testoval pH range 8 to 12 test kit is a colorimetric color comparison set for fast manual determination of pH value in the alkaline range. It is ideal for applications where simple and reliable pH control is required without electronic measuring devices. By adding the included reagents, the water sample changes color according to its pH value. This color is then compared with reference values using the integrated color comparator, allowing the pH value to be determined quickly and visually. Your advantages with the Testoval pH range 8–12 test kit from Heyl Thanks to its compact and handy design, quick and easy determination of pH values in the alkaline range is possible. The test kit delivers reliable results through defined reference colors and is suitable for both mobile and on-site applications. Possible application areas of the test kit from Heyl The Testoval pH range 8–12 test kit is versatile and can be used in areas such as monitoring pH values in process and industrial wastewater, supervising water treatment systems, routine laboratory checks, and quality control. Technical Data Measuring range: pH 8 – 12 Readable values: 8 / 8.5 / 9 / 9.5 / 10 / 10.5 / 11 / 11.5 / 12 Number of analyses: approx. 200 Measurement time: approx. 1 minute Measurement principle: colorimetric color comparison Matching spare parts for the test kit are also available in our online shop: Item number 410617: Testoval pH range 8 to 12 reagents refill pack – reagents for additional analyses Item number 400618: Replacement color comparator pH 8–12 – replacement device for optical evaluation

Testoval Color Comparator for pH Range 8–12 The Testoval color comparator for pH measurement in the alkaline range is ideal as a replacement or addition for existing test kits from Heyl. It is particularly practical for mobile use or regular control measurements. The Testoval color comparator for the pH range 8–12 is used for the visual evaluation of water samples in the alkaline range. It is specifically designed for use with the corresponding Testoval reagents from Heyl and enables easy determination of the pH value through direct color comparison. After the reaction of the water sample with the reagents, a characteristic coloration occurs. This is compared with the integrated reference colors in the device, allowing the pH value to be determined quickly and without electronic aids. Your advantages with the color comparator from Heyl for pH measurement Thanks to the well-designed construction of the color comparator, the pH value can be determined quickly and easily through visual color comparison. No complex training is required to use the product. The application is completely independent of power supply or electronic measuring devices. Due to its compact design, the device is suitable for both laboratory use and mobile applications. The color comparator is the original replacement device for the Testoval test kit from Heyl for the pH range 8–12. Please note that reagents, cuvettes, and additional accessories are not included in the scope of delivery. Additional products available in our online shop Item number 410616: Testoval pH range 8–12 test kit – complete set for pH analysis Item number 410617: Testoval pH range 8–12 reagents refill pack – for additional analyses