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Liquid Chemistry – Manual Test Kits: Parameter Carbonate Hardness (KH)
Measuring carbonate hardness (KH) is a key part of water analysis, especially in drinking water treatment, aquatics, heating systems, and monitoring of cooling or boiler water. Carbonate hardness directly influences the pH level and buffering capacity of water.

Typical areas of application:
• Drinking and domestic water analysis
• Aquariums and garden ponds
• Monitoring of heating and boiler water
• Water treatment systems

Filter products

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Durognost Spezial Pufferlösung, Kunststoffflasche mit Schraubverschluss, Lösung zum Abpuffern starker Alkalinität
Durognost special buffer solution
Product number: 400016
Solution for the buffering of strongly alkaline water samples

€7.70*
Details
DUROGNOST I (0-0,1 dH_0-2 ppm_0,2F) Pulver Grenzwert-Besteck.jpg DUROGNOST I Pulver Grenzwert-Besteck Frontansicht mit Messröhrchen und Dosierlöffel
DUROGNOST® I (0-0.1 °dH / 0-2 ppm / 0.2°F) powder limit indicator
Product number: 400050
Special indicator in powder form for the rapid colorimetric determination of minimum hardness traces in the range 0-0.1 °dH, 0-1.8 ppm CaCO3  or 0-0.2 °f (French hardness).    Complete with measuring tube and spoon. Analyses: approx. 700 Measuring time: approx. ½ minute

€32.10*
Details
DUROGNOST SR 0, Testbesteck mit Tropfflasche und Messröhrchen, zur Resthärteüberwachung
DUROGNOST® SR 0 (0.1 / 0.05 °dH) limit value test kit
Product number: 400056
LIMIT VALUE TEST KIT Liquid special indicator in dropper bottle for the monitoring of softened water, set for the limit values of 0.1 and 0.05 °dH (1,79 and 0,89 ppm).DescriptionComplete with measuring tube and stopper Analyses: approx. 250Measuring time: approx. ½ minute

€15.00*
Details
DUROVAL® 1 Tropfen = 1 °KH Tropfenzähl Titrationsbesteck, Komplettset zur komplexometrischen Wasseranalyse
DUROVAL® 1 Tr. = 1 °KH titration kit
Product number: 400015M
Titration kit for the determination of carbonate hardness via complexometric titration 1 drop corresponds to 1 carbonate hardnessAnalyses: approx. 30 (at an average hardness of 10 °KH)   This product is available in following versions:  1 pcs.50 pcs. 

€17.20*
Details
DUROVAL C, Testbesteck mit kalibrierter Pipette und Indikator, zur Bestimmung der Carbonathärte
DUROVAL® C
Product number: 400060
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.

€27.90*
Details
DUROVAL® CPM, Frontansicht der Verpackung mit Messröhrchen und Pipette, für Wasseranalyse
DUROVAL® CPM
Product number: 400065
Test kit for the determination of the carbonate hardness, resp. the 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) 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, indicators for m- and p-value 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

€32.10*
Details
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