Refill pack: TESTOVAL hydrazine reagents for rapid manual analysis of the hydrazine content in water in the concentration range 0–1 mg/l N2H4. 1 set of reagents (2x 52ml) Analyses: approx. 100 Measuring time: approx. 2 minutes The individual values 0 mg/l, 0.05 mg/l, 0.1 mg/l, 0.25 mg/l, 0.5 mg/l and 1 mg/l can be read by visual colour comparison. The scope of delivery includes only the reagents for simple concentration determination. The colour comparison device or the complete test kit are also available in the shop. Also available in the shop: TESTOVAL Hydrazine colour comparison device: Order no. 410558 Complete TESTOVAL Hydrazine test kit: Order no. 410556 Gold Analysis with a Hydrazine Test Kit

Refill Pack Reagents for Testoval Iron 0–1 mg/L (II + III) – Original from Heyl Colorimetric reagents for determining dissolved iron in the low concentration range for approx. 100 analyses With the refill pack reagents for Testoval Iron 0–1 mg/L (|| + |||) for the concentration range of 0–1 mg/L Fe, you can replenish your existing Testoval Iron analysis kit with a complete set of chemical reagents for determining iron in water. Original Heyl reagents for precise iron determination in the low measurement range The measurement range covers 0–1 mg/L Fe. Individual values of 0.05 mg/L, 0.1 mg/L, 0.25 mg/L, 0.5 mg/L, 0.75 mg/L, and 1.0 mg/L can be safely read using optical color comparison. As an original Heyl product, the reagents are precisely matched to the Testoval Iron test kit, ensuring consistently reliable results. Advantages of the Original Heyl Refill Reagents for Testoval Iron The refill pack allows for approximately 100 analyses, with a measurement time of about 7 minutes per sample. This makes the set an economical and efficient solution for regular iron analyses in drinking, process, and industrial water. By diluting the water sample at a 1:10 ratio with distilled water, the measurement range can be flexibly extended up to 10 times the iron concentration. Using original Heyl reagents ensures consistently high measurement quality, maximum compatibility, and reliable water analysis. 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.

Refill Pack Reagents for Testoval Iron 0-10 mg/L (|| + |||) With the refill pack reagents for Testoval Iron 0-10 mg/L (|| + |||) from Heyl, you can supplement or refill your existing Testoval Iron analysis kit. The refill pack covers a measurement range from 0.25 mg/L to 10 mg/L Fe and allows for approximately 60 analyses. Reagents for reliable determination of dissolved iron in water The measurement range extends from 0.25 mg/L to 10 mg/L Fe. Individual values of 0.25 mg/L, 0.5 mg/L, 1 mg/L, 2.5 mg/L, 5 mg/L, and 10 mg/L can be safely read via optical color comparison. The refill pack is ideal for routine analyses in water monitoring. Advantages of the Testoval Iron Reagent Refill Pack The refill pack allows existing test sets to be used economically without purchasing a complete new analysis kit. The included reagents are precisely matched to the Testoval Iron measurement procedure from Heyl, ensuring reliable and reproducible results. The set enables approximately 60 analyses, with a measurement time of about 7 minutes per sample. The refill pack thus supports consistent measurement quality and efficient monitoring of iron levels in drinking, process, and industrial water. 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.

Refill pack: 1 set of TESTOVAL pH-Chlor DPD reagents for rapid manual analysis of the pH value in the range pH 6.8 - 8 and the chlorine content in the concentration range 0 - 1 mg/l (free and total chlorine) in swimming pool water. The pH values pH 6.8, pH 7.4 and pH 8 and the values for the chlorine content 0.1 mg/l, 0.5 mg/l and 1 mg/l can be read by optical colour comparison. The scope of delivery includes only the reagents for simple concentration determination. 1 set of reagents Number of analyses: approx. 70 Measuring time: approx. 3 minutes Also available in the shop: Complete colorimetric test kit pH-Chlor DPD: Order no. 410601 Replacement colour comparison device pH-Chlor DPD: Order no. 410603

Reagents for the rapid manual analysis of aluminium content in water in the concentration range of 0 to 1.5 mg/l Al. Refill pack for the TESTOVAL colour comparison kit for aluminium. The Testoval Aluminium Reagent Refill Pack contains the appropriate reagents for refilling the Testoval Aluminium test kit. This allows the aluminium content in water to continue to be determined reliably without the need to purchase a completely new test kit. For simple and cost-effective continued use When the reagents in the test kit are used up, simply purchase a refill pack. This allows you to continue using the kit without having to buy a new one. The reagents are specially formulated for the Testoval system, ensuring that measurements remain reliable and comparable. Instructions for use The reagents are intended exclusively for use with the corresponding Testoval Aluminium Test Kit. They enable the continued use of the kit. By simply refilling the kit, the aluminium content in the water can once again be reliably tested.

Reagents in a refill pack for the TESTOVAL Ammonium Colour Comparison Kit, for rapid manual analysis of the ammonium content in water within a concentration range of 0 to 10 mg/l NH4+. The Testoval Ammonium Reagent Refill Pack contains the appropriate reagents for the Testoval Ammonium Test Kit. The existing kit can be easily refilled with these reagents. Refilling reagents – for measuring the ammonium content The refill pack contains the reagents required to carry out the ammonium tests. The reagents react with water to produce a colour, which can then be read off the scale. They are designed to work with the test kit, ensuring that the measurement results remain precise, reliable and comparable.

Refill pack: 1 set of reagents for rapid manual analysis of the chloride content in water in the concentration range 0–100 mg/l Cl. The individual values 1 mg/l, 5 mg/l, 10 mg/l, 25 mg/l, 50 mg/l and 100 mg/l can be read by optical colour comparison. The scope of delivery includes two reagents only. 1 set of reagents (3xA, 1xB) Number of analyses: approx. 40 Measuring time: approx. 3 minutes Also available from us: Replacement colour comparison device TESTOVAL Chloride: Order no. 410528 Complete colorimetric TESTOVAL test kit chloride: Order no. 410526

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.

Refill pack: TESTOVAL Chromate Reagents for rapid manual analysis of the chromate content in water in the concentration range 0–5 mg/l Cr. The individual values 0.1 mg/l, 0.25 mg/l, 0.5 mg/l, 1 mg/l, 2.5 mg/l and 5 mg/l can be read by optical colour comparison. The scope of delivery includes only the set of reagents. The colour comparison device or the complete colorimetric test kit are also available in our shop. 1 set of reagents (1xA, 2xB) Number of analyses: approx. 180 Measuring time: approx. 3 minutes Also available from us: Complete set TESTOVAL Chromat CrVI colorimetric test kit: Order no. 410532 Replacement colour comparison device: Order no. 410534

Refill pack: Testoval Nitrite Reagent for the rapid manual analysis of nitrite levels in water within the concentration range 0–1 mg/l NO₂. With the refill pack for the Testoval Nitrite Test Kit, you can easily continue using your existing kit. The reagents ensure that you can continue to reliably test the nitrite content in the water without having to buy a new test kit. Fresh reagents for accurate nitrite measurements The refill pack contains a complete set of reagents for the Testoval Nitrite Test Kit. The reagents are required to produce a colour reaction in the water sample; only then can the nitrite value be read on the colour comparison device. The reagents are only suitable if you already own a nitrite colour comparison device. They are not suitable for testing without the colour comparison device. Easy refilling of reagents Once the existing chemicals have been used up, they can simply be replaced with this refill pack. The test then works just as usual. The reagents allow for approximately 100 further analyses, each taking around 15 minutes to complete.

Testoval Phosphate Reagents Refill Pack – Accurate Phosphate Measurement Testoval for continuous, precise phosphate analyses – the original from Heyl Testoval Phosphate Reagents Refill Pack for quick and manual analysis of phosphate content in water. Individual values of 0.25 mg/L, 0.5 mg/L, 1 mg/L, 2.5 mg/L, 5 mg/L, and 10 mg/L can be read using optical color comparison. The refill pack provides reproducible results within minutes. By diluting the water sample at a 1:10 ratio with distilled water, the measurement range can be extended up to ten times. Refill reagents for reliable and reproducible phosphate analyses The Testoval Phosphate Reagents Refill Pack is designed to supplement an existing Testoval Phosphate analysis kit and allows for quick and manual determination of phosphate content in water. The refill pack is ideal for routine monitoring in water analysis. Advantages of the Testoval Phosphate Reagents Refill Pack for water analysis The refill reagents provide reproducible results within minutes and allow for simple evaluation without additional measurement equipment. This supports efficient and reliable phosphate analysis in drinking, process, and industrial water. By diluting the water sample at a 1:10 ratio with distilled water, the measurement range can be flexibly extended up to ten times the phosphate concentration. The refill pack therefore offers high operational reliability and an economical solution for regular phosphate measurements. Using the original Heyl test kit together with the corresponding refill pack ensures consistently reliable and accurate test results. 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.

Refill pack: Reagent pH 5.5-8 for rapid manual analysis of the pH value in water in the range pH 5.5 to 8 for approx. 250 analyses. The individual values pH 5.5, pH 6, pH 6.5, pH 7, pH 7.5 and pH 8 can be read by visual colour comparison. The scope of delivery includes only the reagents for simple concentration determination. 1 set of reagents Measuring time: approx. 1 minute Analyses: approx. 250 Also available in the shop: Complete Testoval pH 5.5-8 test kit: Order no. 410610 Replacement colour comparison device pH 5.5-8: Order no. 410612

Refill pack: Reagent pH 8-12 for rapid manual analysis of the pH value in water in the range pH 8 to 12 for approx. 250 analyses. 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 visual colour comparison. The scope of delivery includes only the reagents for simple concentration determination. 1 set of reagents Measuring time: approx. 1 minute Analyses: approx. 250 Also available in the shop: Complete Testoval pH 8-12 test kit: Order no. 410616 Replacement colour comparison device pH 8-12: Order no. 410618

Refill pack: 1 set of TESTOVAL Silicate reagents for rapid manual analysis of the silicate content in water in the concentration range 0–10 mg/l SiO2. The individual values 0.25 mg/l, 0.5 mg/l, 1 mg/l, 2.5 mg/l, 5 mg/l and 10 mg/l can be read by optical colour comparison. By diluting the water sample in a ratio of 1:10 with distilled water, the measuring range can be extended to 10 times the concentration. The scope of delivery includes only test reagents A, B, C and D for simple concentration determination. 1 set of reagents Measuring time: approx. 19 minutes Analyses: approx. 100 Also available in the shop: Complete TESTOVAL dissolved silicate test kit: Order no. 410622 Replacement silicate colour comparison device: Order no. 410624

Testoval Sulfite Reagents Refill Pack – Measure Sulfite Precisely Refill and accurately determine sulfite levels in water Refill pack for sulfite tests with Testoval for the concentration range of 0–20 mg/l SO₃²⁻, sufficient for approximately 150 analyses. Refill reagents for reliable sulfite determination in water The Testoval Sulfite Reagents Refill Pack is designed to refill existing Testoval sulfite test sets, enabling precise determination of sulfite (SO₃²⁻) in water. It is suitable for a wide range of water monitoring applications. This refill pack provides a cost-effective solution for routine sulfite measurements. Benefits of Testoval Sulfite Reagents Refill for Water Analysis With this refill pack, you can extend the life of your existing Testoval sulfite test set without purchasing a complete new analysis kit. The included reagents deliver reliable and reproducible results, with a measurement time of approximately 19 minutes per analysis. Regular sulfite monitoring is important to safely control chemical processes, manage dosages, and maintain consistent water quality. The refill reagents support efficient and cost-effective routine analysis. 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.

Refill pack: 1 set of TESTOVAL Copper reagents for rapid manual analysis of the copper content in water in the concentration range 0–2 mg/l Cu. 1 set of reagents Measuring time with TESTOVAL colour comparison device: approx. 2 minutes Analyses: approx. 100 The individual values 0.1 mg/l, 0.25 mg/l, 0.5 mg/l, 1.0 mg/l, 1.5 mg/l and 2 mg/l can be read by optical colour comparison. The scope of delivery includes only the reagents for simple concentration determination. The complete TESTOVAL copper test kit or the colour comparison kit is also available here in the shop. Also available in the shop: 1 replacement colour comparison device: Order no. 410564 Complete TESTOVAL copper test kit: Order no. 410562

In photometer PPM150 deviating measuring range 0-2.8mg/l ClO2. Use with #880115 PPM150 Portable Photometer, Neomeris

TESTOVAL Copper Color Comparison Kit for rapid manual analysis of copper content in water in the concentration range 0-2 mg/l Cu.The individual values 0.1 mg/l, 0.25 mg/l, 0.5 mg/l, 1.0 mg/l, 1.5 mg/l and 2 mg/l can be read by optical color comparison. In addition to the reagent, the scope of delivery includes a color comparison device for simple concentration determination.Number of analyses: approx. 100Measuring time: approx. 2 minutesAlso in our assortment: 1 set of reagents for approx. 100 analyses: Order no. 410563 Spare color comparator complete: Order No. 410564

TESTOVAL Hydrazine color comparison kit for rapid manual analysis of the hydrazine content in water in the concentration range 0-1 mg/l N2H4.The individual values 0 mg/l, 0.05 mg/l, 0.1 mg/l, 0.25 mg/l, 0.5 mg/l and 1 mg/l can be read by optical color comparison. In addition to the reagents, the scope of delivery includes a color comparison device for simple concentration determination.Number of analyses: approx. 100Measuring time: approx. 2 minutesAlso in our assortment: Refill pack: 1 set of reagents for approx. 100 analyses, order no. 410557 Spare TESTOVAL Hydrazine color comparator: Order No. 410558

Testoval Iron 0-1 mg/L Test Kit ||/||| - Precise Iron Analysis Rapid iron determination with clear color reaction The Testoval Iron 0-1 mg/L color comparison kit is used to determine the iron content in water within a concentration range of 0-1 mg/L Fe. Individual values of 0.05 mg/L, 0.1 mg/L, 0.25 mg/L, 0.5 mg/L, 0.75 mg/L, and 1 mg/L can be read using an optical color comparison. The kit includes two reagents and a color comparison device for simple concentration determination. The color comparison kit enables reliable detection of low iron concentrations in water. By diluting the water sample at a 1:10 ratio with distilled water, the measurement range can be extended up to ten times. Fast and reliable determination of low iron concentrations in water The test kit is ideal for applications where low iron levels need to be reliably monitored, such as drinking water monitoring, water treatment, or technical installations. Advantages of the Testoval Iron 0-1 mg/L Test Kit The color comparison kit allows for a simple and rapid manual analysis of iron content with a clearly visible color reaction. The included color comparison device supports accurate evaluation and reduces user errors. By diluting the water sample at a 1:10 ratio with distilled water, the measurement range can be flexibly extended up to 10 mg/L Fe. This makes the test kit highly versatile and suitable for both routine checks and extended analyses. 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 Iron 0–10 mg/l II/III Test Kit – Efficient Iron Analysis Measurement of iron concentration with the Heyl Testoval Iron kit The Testoval Iron 0–10 mg/l II/III Test Kit is used to determine higher iron concentrations in water. Individual values of 0.25 mg/l, 0.5 mg/l, 1 mg/l, 2.5 mg/l, 5 mg/l, and 10 mg/l can be read using an optical color comparison. The kit allows reliable and rapid determination of iron concentration up to 10 mg/l. In addition to the three reagents, a color comparison device for easy concentration determination is included. Approximately 60 analyses can be performed, with a measurement time of about 7 minutes each. Reliable Determination of Higher Iron Concentrations in Water The Testoval Iron 0–10 mg/l II/III Test Kit enables precise measurement of iron concentrations in water samples over an extended range. Using optical color comparison, individual values of 0.25 mg/l, 0.5 mg/l, 1 mg/l, 2.5 mg/l, 5 mg/l, and 10 mg/l can be read accurately. The kit is especially suitable for applications where elevated iron levels need to be monitored, e.g., in drinking water treatment, industry, or process and operational water analysis. Advantages of the Testoval Iron Test Kit for Water Analysis The Testoval Iron Test Kit allows fast and reliable iron determination with a measurement time of approximately 7 minutes per analysis. The included color comparison device simplifies evaluation and ensures reproducible results. With the three reagents provided, around 60 analyses can be performed, making the kit an economical solution for routine checks. It helps users detect iron contamination early and take appropriate measures to maintain water quality. 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.

Colour comparison kit for rapid manual analysis of aluminium content in water within a concentration range of 0–2.0 mg/l Al. The Testoval Aluminium Test Kit is a colour comparison kit for the manual analysis of aluminium content in water within a range of 0 to 2.0 mg/l aluminium. The kit allows the aluminium concentration to be read directly using a colour scale. Simple aluminium testing in water A slight colour change in the colour comparison device reveals the aluminium content. A water sample is placed in the supplied device, the reagents are added, and the colour intensity is then compared with a scale to read the value. Values from 0 to 2.0 mg/l can be read. By diluting the sample with distilled water in a ratio of 1:10, the measuring range can be extended to 10 times the concentration if required. When diluted with distilled water in a ratio of 1:10, the range is 0–20 mg/l (hand test) and 0–10 mg/l (PPM 150). Advantages and areas of application The test kit: Enables rapid manual determination of the aluminium content in water Works without electricity or a photometer; requires only colour comparison and reagents Provides results in approx. 6 minutes and is sufficient for approx. 130 analyses A wider measurement range can be covered by diluting the sample Such colour comparison tests are well suited for rapid checks in water treatment, swimming pools, industrial facilities or environmental measurements.

Colour comparison kit for the rapid manual analysis of the ammonium content in water within a concentration range of 0 to 10 mg/l NH4+. The Testoval Ammonium Test Kit is a colour comparison kit that allows the ammonium content in water to be determined visually by comparing colours. This enables you to quickly determine how much ammonium is present in the water without the need for electronic measuring devices. How does the Ammonium Test Kit work? The test kit operates on the colour comparison principle. A defined amount of water is placed in a measuring tube, and the appropriate reagents are added. You then pour this mixture into a cuvette. Insert the cuvette into the ammonium colour comparison device. After a measurement time of approximately four minutes, a colour develops which is compared with the scale on the device. The more intense the colour, the higher the ammonium content. Individual values of 0.1 mg/l, 0.5 mg/l, 1 mg/l, 2.5 mg/l, 5 mg/l and 10 mg/l can be read directly from the visual colour comparison. Why is the test kit practical? The Testoval Ammonium Test Kit makes checking the ammonium content in water quick and easy. Everything needed for testing is included in the kit. The measurements provide reliable results within a few minutes and are suitable for regular quick checks in swimming pools, wells or water treatment plants. The kit allows you to carry out approximately 70 analyses.

Color comparison kit for the rapid manual analysis of chloride content in water in the concentration range 0-100 mg/l Cl-. The individual values ... 1 mg/l 5 mg/l, 10 mg/l 25 mg/l 50 mg/l 100 mg/l ... can be read by visual color comparison.  By diluting the water sample in a ratio of 1:10 with distilled water, the measuring range can be extended to 10 times the concentration. In addition to the two reagents a color comparison device for easy determination of concentration is included in the supply. Number of analysis: approx. 40 Measuring time: approx. 3 minutes Also available from us: 1 set of TESTOVAL chloride reagents for approx. 40 analyses: Order no. 410527 Replacement chloride colour comparison device: Order no. 410528