VISOCOLOR HE Total Hardness H 2 titration test kit - refill pack - measuring range: 0.06-2.50 °e / 0.01-0.36 mmol/L Ca2+ sufficient for 200 determinat..
VISOCOLOR HE Total Hardness H 20 F titration test kit - refill pack - measuring range: 0.6-25.0 °e / 0.1-3.6 mmol/L Ca2+ sufficient for 200 determinat..