Octet Comparator For determining silica in natural and industrial waters Employs modified APHA Method 425D Octet Comparator has color standards representing 0.5, 1.0, 2.0, 3.0, 4.0, 6.0, 8.0 and 10.0 ppm silica Sufficient for 50 tests

Octet Comparator For determining total iron (dissolved, suspended and collodial) in natural waters Octet Comparator has color standards representing 0.5, 1.0, 2.0, 3.0, 4.0, 6.0, 8.0 and 10 ppm iron Bipyridyl indicator Sufficient for 100 tests Octet Comparator For determining trace…