Beskrivelse
VISOCOLOR® HE Carbonate hardness C 20 (REFILL).
Refill for Test kit for carbonate hardness in water as well as for the partial alkalinity. Dual range for carbonate hardness (=m-value) as well as the partial alkalinity (=p-value).
Measuring range: 1 syringe filling is enough for testing 0.5 to 20.0 °d and /or 0.2 to 7.0mmol/l H .
This test kit is qualified for the analysis of seawater.
Titrimetric determination of carbonate hardness (p/m Alkalinity)
The determination is preformed as titration with hydrochloric acid against a mixed indicator, which changes colour at pH 4.5. (Reaction principle analogous to DIN EN ISO 9963-1 C2 and C24)
Information:
Type high sensitive titration kit (refill pack)
Range
- syringe is sufficient for the determination of 0.5 – 20 °d or 0.2 – 7 mmol/l H (corresponds to 10 – 350 mg/l CaCO3)
- 1 gradation mark = 0.5 °d = 0.2 mmol/l H
Sufficient for about 200 tests with an average carbonate hardness of 10 °d or 4 mmol/l H
Shelf life at least 2 years
Sea water suitability: yes
Detectable with Photometer: no
Carbonate hardness is that portion of calcium and magnesium ions which are present as carbonate or hydrogen carbonate.
Normally the carbonate hardness is smaller than the total hardness. If the carbonate hardness is larger than the total hardness, you should trace the origin of this abnormal conditions, e. g. discharge of alkali hydrogen carbonates or high buffer capacity.
Refill-sæt til bestemmelse af vands carbonat hårdhed
