Test Kit to measure oxygen level that is dissolved in the water, results in ppm or percentage from saturation with 0.1 resolution.
I. Brief History ISW business activities ( an abbreviation of Indah Sari Windu) was first established in 1980 in Medan, North Sumatra. ISW engaged in general trading include export, import and....
Ammonia Test Kit is very useful to measure Ammonia level in the water that is hazardous towards fishes.
Specification: Scope 0.0 to 14.0 pH Resolution 0.1 pH Accuracy  ± 0.1 pH Biosphere 0 to 50 ° C Battery Type 3 x 1.5V, Alkaline Battery Durability 700 hours of constant usage ....