Test kit for the determination of water hardness across all hardness ranges via complexometric titration with a liquid titration agent and a pipette, accurately calibrated in °dH hardness unit.   Description Complete with measuring tube, pipette calibrated from 0-30 °dH, special junction stopper, powder indicator and 50 ml titration solution. Analyses: approx. 100 (at an average hardness of 15 °dH) Measuring time: approx. 2 minutes Accuracy: 0.5 °dH  

Duroval B Test Kit 0–2 °dH – Hardness Determination Reliable titration test kit for precise determination of hardness in very soft or demineralized water by Heyl. The Duroval B Test Kit 0–2 °dH is designed to measure water hardness in very soft or demineralized water samples using titration. With a finely calibrated dosing pipette, liquid indicator, and titration solution, it provides precise and fast measurement. The Duroval B test kit is a complete analysis set for measuring water hardness in very soft or demineralized water. Clear results are obtained within approximately two minutes with an accuracy of 0.05 °dH. Precise titration method for very soft and demineralized water The Duroval B Test Kit 0–2 °dH was specifically developed for accurate measurement of water hardness in very soft or demineralized water samples. Using the proven titration method, even very low hardness levels can be reliably determined, which is particularly important in sensitive water treatment applications. The Heyl test kit includes a finely calibrated dosing pipette, titration solution, and liquid indicator, enabling fast, reproducible, and user-friendly analysis. Advantages of the Duroval B test kit for hardness measurement With the Duroval B test kit, users obtain precise results within about two minutes with a high accuracy of 0.05 °dH. The clearly visible color change simplifies evaluation and minimizes user errors. The complete analysis set is ideal for routine checks, commissioning, and mobile measurements. It provides a reliable manual solution for monitoring very low water hardness and supports safe process and quality control.

Refill pack: 50 ml bottle DUROVAL® B titration solution for the determination of the water hardness in very soft or softened water samples via titration.        

As test kit type B, but with powder indicator and calibrated dosing pipette 0-4 ° f(french hardness).

Test kit for the determination of the carbonate hardness or the m-value (acid capacity up to pH 4,3, Ks4,3) of all natural and industrial water samples via titration with a liquid titration agent and a pipette with accurate °dH and mmol/l calibrations.   Description Complete with measuring tube, pipette with calibration 0-20 °dH and 0-7 mmol/l, special junction stopper, indicator and 50 ml titration solution. Analyses: approx. 100 (at an average carbonate hardness of 10 °dH) Measuring time: approx. 2 minutes Accuracy: 0.5 °dH / 0.25 mmol/l.

Refill pack: 8 ml bottle DUROVAL® C indicator  For the determination of the carbonate hardness or the m-value (acid capacity up to pH 4,3; Ks4,3) of all natural and industrial water samples via titration.

Refill pack: DUROVAL® C titration solution for the determination of the carbonate hardness or the m-value (acid capacity up to pH 4,3; Ks4,3) of all natural and industrial water samples via titration. 

refill pack: 2 bottles of 50 ml. DUROVAL® Chlorid titration solution C. Titration solution for the determination of chloride contents in water.  

Kit for the determination of chloride contents in water.   Description Complete with all accessories and reagents. Analyses: approx. 200 Measuring time approx. 2 minutes Pipette: calibrated from 0-300 mg/l CI- Accuracy: 10 mg/l CI-  

Refill pack: 2 bottles of 17 ml. DUROVAL® Chloride reagents Reagents for the determination of chloride contents in water.  

Duroval CO₂ Test Kit by Heyl – CO₂ Measurement Made Easy Quick Determination of Dissolved CO₂ The Duroval CO₂ test kit is designed for determining dissolved carbon dioxide in water samples. With this kit, you can reliably measure free carbonic acid in water using drop titration. Quick and Reliable Determination of Dissolved CO₂ in Water The Duroval CO₂ test kit enables precise measurement of dissolved carbon dioxide (free carbonic acid) in water samples. Using the proven drop titration method, CO₂ levels can be determined quickly, easily, and reproducibly. The kit is ideal for applications in water treatment, drinking water monitoring, industry, and technical operations where CO₂ content directly affects water chemistry and material durability. Why Measuring Carbon Dioxide (CO₂) in Water is Important Dissolved carbon dioxide significantly affects the pH, corrosiveness, and chemical stability of water. Excess CO₂ can cause corrosion in pipes, fittings, and system components, especially metallic materials. Additionally, CO₂ plays a key role in the lime-carbonic acid equilibrium. Imbalances can promote both scaling (lime deposits) and material degradation. Regular measurement of free CO₂ allows for targeted water treatment, optimized dosing, and prevention of system damage. The Duroval CO₂ test kit therefore supports safe process management, stable water quality, and long-term protection of water-carrying systems.

DUROVAL® CPM Test Kit – Quickly Determine Carbonate Hardness & Acid Capacity Set for determining carbonate hardness, p-value, and m-value. The Duroval CPM Test Kit is designed to measure carbonate hardness (m-value; acid capacity up to pH 4.3; Ks 4.3) and p-value (acid capacity up to pH 8.2; Ks 8.2). The kit provides precise results within minutes and enables straightforward analysis. Contents of the DUROVAL® CPM Test Kit Measuring tubes Calibrated dosing pipette 0–20 °dH and 0–7 mmoI/I Special connection stopper Indicators for p-value and m-value 50 ml titration solution Precise determination of carbonate hardness, p-value, and m-value by titration The DUROVAL® CPM Test Kit is a professional analysis set for determining carbonate hardness and water acid capacity. It allows the measurement of p-value (Ks 8.2) and m-value (Ks 4.3), providing essential parameters for the evaluation of raw, process, and operational water. Using the proven titration method, users obtain fast and reliable results in just a few minutes. The kit is ideal for applications in water treatment, industrial processes, and technical operations. Advantages of the DUROVAL® CPM Test Kit for Water Analysis The DUROVAL® CPM Test Kit excels with easy handling and high measurement accuracy. The calibrated dosing pipette ensures precise titration, while the special indicators provide clear and easily visible color changes. The compact kit is ideal for mobile measurements, service operations, and routine checks. It provides a reliable manual solution to quickly assess carbonate hardness and acid capacity and ensures safe control of water chemistry processes.

Refill pack: 8 ml bottle DUROVAL® indicator fluid for measuring water hardness in all measuring ranges.      

Test kit for the determination of the base capacity up to pH 8,2; KB 8,2 of all natural and industrial water samples via titration with a liquid titration agent and a pipette with accurate mmol/l calibrations.   Content: Complete with measuring tube, pipette with caliitration solutionbration 0-2.0 mmol/l, special junction stopper, 8 ml indicator and 50 ml titration solution. Analyses: approx. 100 (at an average base capacity of 1 mmol/l) Measuring time: approx. 2 minutes Accuracy: 0.05 mmol/l

Refill pack: 8 ml bottle DUROVAL® Ks 4,3 indicator liquid For the determination of the acid capacity up to pH 4,3; Ks4,3 of all natural and industrial water samples via titration.  

Refill pack: 8 ml bottle DUROVAL® P indicator for measuring water hardness in all measuring ranges.

The titration pipette is calibrated from 0 to 300 mg/l SO42-. The measurement range can be expanded to double the concentration via refilling of the titration pipette and to ten-times the concentration by diluting the water sample with distilled water.   Description Complete with all reagents and accessories. Number of analyses: approx. 30 Titration pipette: calibrated 0-300 mg/l SO42- Measuring accuracy: 10 mg/l SO42- (measuring accuracy is 100 mg/l SO42- with dilution of the water sample in the ratio of 1 : 10)

Refill pack: 2 bottles of 50 ml. DUROVAL® Sulfate SO4 reagent A

Refill pack: bottle of 8 ml. DUROVAL® Sulfate SO4 reagent B

Refill pack: bottle of 50 ml. DUROVAL® Sulfate SO4 titration solution C

DUROVAL® TF is an industrial test kit for the determination of water hardness across all hardness ranges via complexometric titration with a liquid titration agent and a pipette, accurately calibrated in hardness units.   Especially recommendable as initial equipment for water softening installation.   Description   Complete with measuring tube, pipette calibrated from 0-4 °f (French hardness), special junction stopper, powder indicator and titration solution. Analyses: approx. 60 (at an average hardness of 26,7 °f) Measuring time: approx. 2 minutes Accuracy: 1 °f

Duroval TI Test Kit 0-30 °dH from Heyl – Industrial Water Hardness Analysis Titration test kit for determining total water hardness The Duroval TI Test Kit 0-30 °dH is an analysis set for precise determination of total water hardness in water samples via complexometric titration. The TI test kit provides fast and reliable results in the range of 0 to 30 °dH. In approximately 2 minutes, users receive meaningful measurements with an accuracy of 0.5 °dH. Contents of the test kit: Measuring tube Indicator Calibrated dosing pipette 0–30 °dH 30 ml titration solution Reliable Total Hardness Determination via Complexometric Titration The Duroval TI Test Kit 0–30 °dH is a professional analysis set from Heyl for precise determination of total water hardness in industrial and commercial applications. The proven complexometric titration method ensures accurate analysis of raw, process, and operational water across a wide measurement range. The test kit delivers fast and reproducible results. Within approximately 2 minutes, users obtain meaningful measurements with an accuracy of 0.5 °dH, making it ideal for routine checks and commissioning. Advantages of the Duroval TI Test Kit for Industrial Applications The Duroval TI Test Kit stands out due to its simple handling and high measurement reliability. The calibrated dosing pipette ensures precise addition of the titration solution, while the clear color change of the indicator enables accurate evaluation. The compact set is especially suitable for mobile measurements, service tasks, and regular checks in industrial water treatment. It provides a precise manual alternative to automated measurement systems and supports efficient quality and process monitoring.

Refill pack of DUROVAL® TI titration solution for measuring water hardness across all hardness ranges via complexometric titration. Content: bottle with 25 ml DUROVAL® TI. 

As test kit type TI, but with liquid indicator and dosing pipette calibrated on0-60 ° f (French hardness).