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

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

Color comparison kit for the rapid manual analysis of hexavalent chromium 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 5 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. 180 Measuring time: approx. 3 minutes Also available from us: 1 set of reagents for approx. 70 analyses: Order no. 410533 Replacement colour comparison device: 410534

Color comparison kit for the rapid manual analysis of 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 1 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. 100 Measuring time: approx. 15 minutes Also available in the shop: 1 set of reagents for approx. 100 analyses: Order no. 410581 Replacement colour comparison device: Order no.: 410582

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.

TESTOVAL colour comparison kit pH 5.5-8 for quick manual analysis of the pH value in water in the range pH 5.5 to 8. The individual values 5.5 mg/l, 6 mg/l, 6.5 mg/l, 7 mg/l, 7.5 mg/l and 8 mg/l can be read by visual colour comparison. In addition to the reagents, the scope of delivery includes a colour comparison device for easy concentration determination. Number of analyses: approx. 250 Measuring time: approx. 1 minute Also available in the shop: 1 set of reagents for approx. 250 analyses: Order no. 410611 Replacement colour comparison device: Order no. 410612

TESTOVAL colour comparison kit pH 8-12 for quick manual analysis of the pH value in water in the range pH 8 to 12. The individual values 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. In addition to the reagents, the scope of delivery includes a colour comparison device for easy concentration determination. Number of analyses: approx. 250 Measuring time: approx. 1 minute Also available in the shop: 1 set of reagents for approx. 250 analyses: Order no. 410611 Replacement colour comparison device: Order no. 410612

Color comparison kit for the rapid manual analysis of phosphate content in water in the concentration range 0-10 mg/l P2O5. The individual values ... 0,25 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. 180 Measuring time: approx. 5 minutes Refill packs 1 set of reagents for approx. 180 analyses: Order no. 410593 Replacement colour comparison device: Order no. 410594

Testoval Silicate Test Kit – Color Comparison for Rapid Analysis Reliable manual determination of dissolved silicate in water The Testoval Silicate Test Kit is designed for rapid, manual analysis of silicate content in water in the concentration range of 0–10 mg/l SiO₂. 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 a visual color comparison. When reagents are added to the water sample, a characteristic color develops. The provided comparison scale allows easy reading of the concentration levels. By diluting the sample 1:10, the measurable range can be extended by a factor of 10. The kit allows for approximately 100 individual analyses, with each measurement taking about 19 minutes. Manual determination of dissolved silicate in water up to 10 mg/l The Testoval Silicate Test Kit enables reliable, manual analysis of dissolved silicate (SiO₂) in water. After adding the reagents, a characteristic color reaction occurs, which is evaluated using the included comparison scale. Diluting the water sample 1:10 allows flexible extension of the measurement range by a factor of 10. Why monitoring silicate in water is important Dissolved silicates play a crucial role in industrial water treatment, particularly in boiler feed water, cooling water, and reverse osmosis systems. Excessive silicate concentrations can lead to the formation of stubborn deposits (silicate scale), which are difficult to remove and significantly impair heat transfer and system efficiency. In membrane processes, silicate can also cause irreversible damage and significantly shorten membrane lifespan. Regular silicate monitoring allows early detection of limit exceedances, targeted process control, and prevention of costly system damage. The Testoval Silicate Test Kit thus supports safe process management and long-term operational reliability.

Colour comparison kit for the concentration range 0-20 mg/l SO32-. Individual values ... 0.5 mg/l 1 mg/l 2.5 mg/l 5 mg/l 10 mg/l 20 mg/l ... can be read by visual color comparison.  In addition to the two reagents a color comparison device for easy determination of concentration is included in the supply. Analyses: approx. 150 Measuring time: approx. 3 minutes Also available in the shop: 1 set of reagents for approx. 150 analyses: Order no. 410635 Replacement sulphite colour comparison device: Order no. 410636