VISOCOLOR HE test kits are highly sensitive colorimetric and titrimetric tests to determine even the lowest limiting values. The exact dosing of the single reagents as well as the compensation of turbidity and color are the basis for a highly precise analysis. Maximum sensitivity and accuracy are achieved by the use of longer measuring tubes and larger sample volumes. The sensitivity of VISOCOLOR HE is 10 to 100 times higher compared to other VISOCOLOR tests. The visual evaluation of the colorimetric test kits is done with high-quality color comparison disks, which are adjusted to the original color of standard solutions. Refill packs are available as replacement for consumed reagents. Every VISOCOLOR HE test kit is delivered in a robust box with plastic inlay and an easy to understand instruction leaflet.