TRACE-COLORS PRO MULTI TEST KIT Advanced tests for the high accuracy measurement of Iodine, Potassium and Iron. Recommended for Ultra Low Nutrient Systems. Best Value I2 | K | Fe Red Sea’s TRACE COLORS PRO Multi Test Kit includes advanced tests for the high accuracy measurement of iodine, potassium and iron. All of these elements are associated with many biological functions, including coral pigmentation. The TRACE COLORS PRO Multi Test Kitenables accurate dosing of three of the TRACE COLORS Supplements range, which are part of the compete Red Sea Reef Care Program. Manual Catalog MSDS FAQ Red Sea’s TRACE COLORS PRO Multi Test Kit Specifications: Test Name Element Accuracy Range Test Type No. of test Iodine Pro I2 0.01 ppm 0-0.09 ppm Colorimetric 50 Potassium Pro K 3 ppm 150-450 ppm Titration 40 Iron Pro Fe 0.05 ppm 0-0.5 ppm Colorimetric 50