This product contains 30 self-filling CHEMets ampoules and 30 cadmium foil packs to refill kit K-6909A or K-6909D for the analysis of nitrate. R-6904 is compatible with C-6909A and C-6909D comparators.
Shelf life: 12 months
$56.54
50 or more $50.89
100 or more $48.06
200 or more $45.23