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.    

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.

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

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

Spare color comparator TESTOVAL Iron for the concentration range 0-1 mg/l Fe.The individual values 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 by optical color comparison. By diluting the water sample 1:10 with distilled water, the measuring range can be extended to 10 times the concentration. Only a color comparator for simple concentration determination is included in the scope of delivery.Reagents or the complete colorimetric test kit are also available in the store. Analyses: approx. 100 Measuring time: approx. 7 minutesAlso in our assortment: 1 set of reagents for approx. 100 analyses: Order no.: 410548 Complete Testoval test kit Iron (II) + (III) dissolved 0-1 mg/l: Order no. 410547

Replacement color comparator without cuvette, for the concentration range 0-20 mg/l SO32-.The individual values 0.5 mg/l, 1 mg/l, 2.5 mg/l, 5 mg/l, 10 mg/l and 20 mg/l can be read by optical color comparison. Only the color comparator for simple concentration determination is included in the scope of delivery.Measuring time: approx. 19 minutesäAlso in our assortment: 1 set of reagents for approx. 150 analyses: Order No. 410635 Complete test kit TESTOVAL Sulfite: order no. 410634

Testoval Phosphate Color Comparison Device – Manual Measurement Replacement color comparison device for quick and easy determination of phosphate in water The Testoval Phosphate Color Comparison Device is designed for fast visual determination of phosphate content in water. Measurement is performed manually via color comparison. Without the use of additional electronic equipment, concentrations from 0.25 mg/L to 10 mg/L P₂O₅ can be read directly using the color scale. The Heyl Testoval is suitable for both routine checks and simple documentation of results. Fast Phosphate Measurement via Color Comparison Without Equipment The Heyl color comparison device is specifically designed for applications requiring fast results and ease of use. By diluting the water sample 1:10 with distilled water, the measurement range can be extended tenfold. With the Testoval Phosphate Color Comparison Device, approximately 180 analyses can be performed, making it an economical solution for routine monitoring. Typical Applications of the Phosphate Color Comparison Device Manual phosphate determination is a proven method in many areas of water analysis, particularly where electronic measurement devices are unavailable or unnecessary. Environmental monitoring Water and wastewater analysis Laboratory applications Advantages of Phosphate Measurement with the Heyl Testoval Kit The Heyl Testoval Phosphate Test Kit offers a reliable, fast, and user-friendly way to determine phosphate content (P₂O₅) in water samples—completely without electronic devices or lab infrastructure. Fast on-site results: The colorimetric measurement provides usable results within minutes, ideal for routine checks, spot measurements, and immediate decisions. Easy handling without equipment: No electronic devices, power supply, or software are needed. Results are read visually via a color scale, making the device robust, error-tolerant, and easy to use. High practicality and mobility: Compact design allows mobile use—in the field, at measurement points, or in operational settings. Perfect where laboratory analysis would be too complex or time-delayed. Accuracy for monitoring and control: Provides practical accuracy for environmental monitoring, water and wastewater analysis, and brewing, allowing limits to be checked and trends detected early. Economical and efficient: With around 180 analyses per kit, the Heyl Testoval offers a cost-effective solution for regular measurements without maintenance, calibration, or follow-up costs for equipment. Extendable measurement range: Simple sample dilution (1:10) allows flexible expansion of the measurement range, increasing usability for higher phosphate concentrations.

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