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

Testoval Chlor DPD Reagents Refill Pack – Measure Chlorine Levels Reliably Refill your Testoval Chlor test set for consistent results The Testoval Chlor DPD Reagents Refill Pack is designed for DPD chlorine tests in the concentration range of 0.1–1 mg/l for free and total chlorine. Individual values of 0.1 mg/l, 0.2 mg/l, 0.3 mg/l, 0.5 mg/l, 0.75 mg/l, and 1 mg/l can be read using an optical color comparison. With this refill pack, you can continue to perform accurate chlorine determinations. Fast color changes simplify water analysis. Refill Reagents for Precise DPD Chlorine Analysis in the Low Range The Testoval Chlor DPD Reagents Refill Pack from Heyl is intended for refilling the Testoval Chlor test sets and ensures reliable determination of free and total chlorine in the 0.1–1.0 mg/l range. Using optical color comparison, individual values of 0.1 mg/l, 0.2 mg/l, 0.3 mg/l, 0.5 mg/l, 0.75 mg/l, and 1.0 mg/l can be read accurately. This makes the refill pack ideal for routine water monitoring checks. Advantages of the Testoval Chlor DPD Refill Pack for Water Analysis The refill pack allows existing test sets to be used economically and sustainably. The reagents produce fast and clear color changes, simplifying evaluation and reducing measurement errors. The DPD method is a proven procedure for chlorine determination and is suitable for various applications, such as drinking water monitoring, swimming pools, or technical installations. The refill pack ensures consistent measurement quality and reliable chlorine analysis in daily use. 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.

Replacement color comparator without cuvette, for the Testoval Chlorine DPD color comparison kit for the concentration range 0.1–1 mg/l free and total chlorine. The three reagents are not included in the scope of delivery and can be ordered separately or as part of a complete set. Chlorine DPD 0.1–1 mg/l - Color Comparator Testoval – Values by color comparison The Testoval color comparator for Chlorine DPD (0.1–1 mg/l) is a replacement color comparator for the Testoval chlorine test kit from Heyl. It is used to determine free and total chlorine in water by means of an optical color comparison. The device is specifically designed for the measuring range of 0.1 to 1 mg/l chlorine and serves as a replacement part for the corresponding Testoval test kit. The reagents are not included in the scope of delivery and must be ordered separately. Technical data: Analyses: approx. 70 Measurement time: approx. 1 minute The individual values 0.1 mg/l, 0.2 mg/l, 0.3 mg/l, 0.5 mg/l, 0.75 mg/l and 1 mg/l can be read by optical color comparison. Possible applications Drinking water and process water analyses Monitoring of disinfection processes Routine analyses in laboratories Service and maintenance operations in water systems Why should you order the color comparator from Heyl? Fast determination of chlorine content through optical color comparison Specifically designed for Testoval Chlorine DPD 0.1–1 mg/l test kits Clear color scale for quick concentration determination You can also order the test kit complete or as a refill pack: Item number: 410521 Testoval Chlorine DPD reagent refill pack Item number: 410520 Testoval Chlorine DPD 0.1 - 1 mg/l test kit

With the Testoval Chlorine DPD from Heyl, it is possible to obtain visual measurement results within a few minutes. The kit is perfectly suited for water samples in the range of 0.1 to 1 mg/l. Both low-dosed and slightly higher chlorine values within this range can be determined directly. Testoval Chlorine DPD 0.1 - 1 mg/l Test Kit – suitable for fast chlorine measurement The Testoval Chlorine DPD 0.1 1 mg/l test kit is a color comparison analysis set that allows you to visually determine the content of free and total chlorine in water. It covers a measuring range from 0.1 mg/l to 1 mg/l and is suitable for fast, manual water analyses. With this test kit, the amount of chlorine in the water is determined through an optical color comparison. Accordingly, this test kit is ideal for detecting chlorine concentration within a few minutes. Technical details and contents of the test kit Complete color comparison kit Color comparator Reagents A, B and C Measuring spoon Measuring tube Cuvette Approx. 70 measurements possible with the included reagents Measurement time – approx. 1 minute per analysis Why buy the Testoval Chlorine DPD from Heyl? Intuitive measurement via color comparison instead of a digital device Fast results in only ~1 minute Ideal for free and total chlorine in drinking and process water Compact equipment for mobile and fast measurement Possible applications Environment, industry and maintenance Disinfection systems Control of disinfection and cleaning processes Testing chlorine levels in drinking water or process water Refill packs: 1 set of reagents for approx. 70 analyses: Order no. 410521 Replacement color comparator: Order no. 410522

The Testoval Chlor DPD 0.5-4 mg/l is a handy colour comparison test kit for quickly determining the free and total chlorine content in water in the range from 0.5 to 4 mg/l. Within about one minute, you can see how much chlorine is contained in the water. Quickly determine chlorine levels – easily and reliably The test works according to the DPD method. This means that you place a defined amount of water sample in a measuring tube, add the enclosed reagents and compare the resulting colour with the scale included in the delivery. The stronger the colour, the higher the chlorine content. The values 0.5, 1, 1.5, 2, 3 and 4 mg/l can be read directly on the colour scale. Possible uses of the test The test is particularly well suited for reliably checking the chlorine content in water without measuring devices, for example in: Swimming pools and bathing facilities to ensure that the disinfection value is within the optimum range Water treatment or monitoring, when chlorine needs to be checked as an indicator of hygienic water quality As the test works manually by colour comparison, no expensive measuring equipment is required and samples can also be tested on the go. The set includes approx. 70 analyses.

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.