Separate test kits for chemical analysis of water samples without the need for extra apparatus or previous chemical knowledge. The VISOCOLOR ® card color templates are keyed to the original colors of freshly prepared standard solutions, thus ensuring fine resolution, precision and reproducibility of the measurement results.

Instructions in German, English, French, Italian, Spanish, Dutch.

Measuring range: 0,02 – 0,5 mg/l NO₂^-
Number of tests: 120

Contents of test kit:
30 mL NO2-1
5 g NO2-2
1 measuring spoon 70 mm
2 screw-plug measuring glasses
1 slide comparator
1 color chart
1 plastic syringe 5 mL
1 instructions for use