Alkalinity Calibration Checking Set for hi 755

Marine professional Test kit for I2 iodine Iodine is a chemical element with the symbol I. Iodine is extremely important for most reef species, especially invertebrates require it to sustain their cell functions. The iodine concentrations in the different oceans across the world varies from 0.025 &ndash; 0.064 mg/l.<br...