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.

Refill Pack Reagents for Testoval Iron 0-10 mg/L (|| + |||) Reagents for measuring dissolved iron levels up to 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.

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 rapid manual analysis of aluminium content in water in the concentration range 0–1.5 mg/l Al. The individual values ... 0 mg/l, 0.1 mg/l, 0.2 mg/l, 0.5 mg/l, 1 mg/l and 1.5 mg/l can be read by optical colour comparison on the colour comparison device. 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. 1 set of reagents (1xA, 2xB) Number of analyses: approx. 130 Measuring time: approx. 6 minutes - Complete colour comparison kit including the 2 reagents and accessories: Order no.: 410650

Reagents for rapid manual analysis of the 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 and 10 mg/l can be read by optical colour comparison. The colour comparison device for easy concentration determination can be ordered separately or as part of a set with the reagents. 1 set of reagents (1xA, 1xB, 1xC) Number of analyses: approx. 70 Measuring time: approx. 4 minutes Also available from us: Complete colour comparison set Testoval Ammonium: Order no.: 410680 Replacement colour comparison device Testoval Ammonium: Order no.: 410682

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