Salifert Iodine Test Kit - 40 Tests Iodine is present in natural sea water in a very low concentration (0.6 mg/L or 0.06 PPM) and this i There is a misconception among many hobbyists that iodide predominates in natural sea water but in f Test kits which are not capable of detecting iodate are not suitable for aquarium use, since in a pr Iodine test kits should be capable of measuring all forms of naturally occurring iodine. The Salifer Unlike many other test kits, the Salifert Iodine Profi-Test is free from interference from other ele