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.

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 rapid manual analysis of the nitrite content in water in the concentration range 0–1 mg/l N02. The individual values 0.05 mg/l, 0.1 mg/l, 0.2 mg/l, 0.3 mg/l, 0.5 mg/l and 1 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. Only the reagent is included in the scope of delivery. 1 set of reagents Measuring time: approx. 15 minutes Analyses: approx. 100

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.

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.

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

Test Kit for the determination of polyamine concentration in circulation water. Complete with all reagents and accessories.    

Test Kit for the determination of polyamine concentration in circulation water. Complete with all reagents and accessories.    

Test Kit for the determination of polyamine concentration in circulation water. Complete with all reagents and accessories.    

Test Kit for the determination of polyamine concentration in circulation water. Complete with all reagents and accessories.    

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.

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.

Product information ‘Testoval Aluminium Test Kit’ Colour comparison kit for rapid manual analysis of the aluminium content in water in the concentration range 0–2 mg/l Al for the manual test and 0–1 mg/l Al for the PPM 150. The individual values ... 0 mg/l, 0.1 mg/l 0.2 mg/l 0.5 mg/l 1 mg/l 2.0 mg/l... can be read by visual 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. 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). In addition to the two reagents, the scope of delivery includes a colour comparison device for easy concentration determination. Number of analyses: approx. 130 Measuring time: approx. 6 minutes

Color comparison kit for the rapid manual analysis of ammonium content in water in the concentration range 0-10 mg/l NH4+. The individual values ... 0.1 mg/l, 0.5 mg/l 1 mg/l 2.5 mg/l 5 mg/l 10 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. 70 Measuring time: approx. 4 minutes Also available from us: 1 set of reagents for approx. 70 analyses: Order no. 410681 Replacement colour comparison device for ammonium: Order no. 410682

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

Replacement color comparator without cuvette, for the TESTOVAL Chlorine DPD color comparison set for the concentration range 0.1-1 mg/l free and total chlorine. 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. The three reagents are not included in the scope of delivery and can be ordered separately or also as a complete set. Analyses: approx. 70 Measuring time: approx. 1 minuteAlso in the assortment:1 set of reagents for approx. 70 analyses: Order no. 410521Complete set Testoval Chlorine DPD Method 0.1-1 mg/l: Order no. 410520

Colour comparison kit for the concentration range 0.1-1 mg/l Cl2 (free and total)   Individual values ... 0.1 mg/l 0.2 mg/l 0.3 mg/l 0.5 mg/l 0.75 mg/l 1 mg/l ... can be read by visual color comparison.    In addition to the three reagents a color comparison device for easy determination of concentration is included in the supply.   Analyses: approx. 70 Measuring time: approx. 1 minute   Refill packs: 1 set of reagents for approx. 70 analyses: Order no. 410521 Replacement colour comparison device: Order no. 410522

Color comparison kit for the rapid manual analysis of chlorine content in water in the concentration range 0.5-4 mg/l free and total chlorine. The individual values ... 0.5 mg/l 1 mg/l 1.5 mg/l 2 mg/l 3 mg/l 4 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. 70 Measuring time: approx. 1 minutes Also in the range: 1 set of reagents for approx. 70 analyses: Order no. 410521 Replacement colour comparison device TESTOVAL Chlorine 0.5-4 mg/l: Order no. 410523