Visual test kits can be evaluated by eye, without further equipment. They are divided into colorimetric test kits, which are compared to a color chart, and titrimetric test kits, where the amount of used reagent is related to the measured value. Some tests are also suitable for photometric evaluation.
Titrimetric test kit VISOCOLOR HE Total hardness H 20 F Content 200 Test(s) REF 915005
Titrimetric test kit VISOCOLOR HE Alkalinity AL 7 (acid capacity), refill pack Content 200 Test(s) REF 915207