| Width | 7 cm |
| Height | 5,5 cm |
| Length | 9,5 cm |
| Weight | 0,2 kg |
| Country of origin | EU |
| Customs tariff number | 38221900 |
DUROGNOST® I (0-0.1 °dH / 0-2 ppm / 0.2°F) powder limit indicator
€33.20
Please log in to receive your conditions.
Payment methods
Request individual offer (from 5 pcs.)
For larger order quantities, we will be happy to prepare an individual offer for you.
(Login for quotation) The entered number of pieces will be taken into account when creating the quotation.
Delivery & Shipping
- Standard shipping: 3–5 business days within Germany
- Express shipping available on request
- International delivery to EU and Switzerland
- No shipment of Heyl products to Spain, France and Portugal
- Dangerous goods shipping according to ADR regulations
- 3% online discount on HEYL, HORIBA, JUMO and MILWAUKEE products
Personal consultation
Our experts will be happy to advise you on water treatment, measurement technology and sterile processing.
Technical consulting for industry, laboratory and building technology — your specialist for water analysis and process water treatment.
Contact formQuick info
| Measurement parameters: | For the rapid colorimetric determination of minimum hardness traces |
| Measuring range: | 0 – 0,1 °dH 0 – 2 ppm CaCo3 0,8 °f |
| Application: | Our product series DUROGNOST® is a limit value test for the determination of residual hardness in water. |
| Width | 7 cm |
| Height | 5,5 cm |
| Length | 9,5 cm |
| Weight | 0,2 kg |
| Country of origin | EU |
| Customs tariff number | 38221900 |
Product information "DUROGNOST® I (0-0.1 °dH / 0-2 ppm / 0.2°F) powder limit indicator"
The DUROGNOST® I (0–0.1 °dH / 0–2 ppm / 0.2 °F) powder test kit is designed for the rapid colorimetric determination of residual hardness in water.
Analyses: approx. 700
Special indicator in powder form for the rapid colorimetric determination of the slightest traces of hardness in the range of 0–0.1 °dH or 0–2 ppm CaCO₃ or 0.2 °f (French hardness). Complete with measuring tubes and dosing spoon.
With the Durognost I Powder Limit Test Kit, you can easily determine whether your water exceeds a specific limit value. The kit uses a powdered indicator that reacts when mixed with water.
The test kit is suitable if you want to check quickly and without complicated measurements whether water is harder than a specified value. It is not suitable if you require exact numerical values for water hardness.
Easy water hardness testing
The test kit uses a chemical indicator that changes colour depending on the threshold value reached. This gives you a clear result without the need for any equipment.
How do I use the indicator?
Dissolve 50 mg (one level measuring spoon) of DUROGNOST I indicator in 10 ml of practically completely softened water. The resulting colours correspond to the following values:
- Green colour: 0 °dH
- Grey colour: approx. 0.025 °dH
- Violet-tinged grey colour: approx. 0.05 °dH
- Red colour: approx. 0.1 °dH and above