AF Reference Solution is a professional standard solution that enables reliable calibration of measuring devices and verification of the accuracy of drop tests. Thanks to carefully selected parameter values, the product is an essential tool in water quality control. Why use AF Reference Solution? Allows verification of the accuracy of home drop tests (KH, Ca, Mg, K, Sr). Enables calibration and performance checks of measuring devices. Helps identify whether problems are caused by water parameters or measuring equipment. Increases confidence in making decisions regarding marine aquarium care. Directions for useAlways close the bottle tightly after use. Do not leave the container open longer than necessary. Store the product in a shaded place at a temperature not exceeding 25°C. Evaporation affects parameters; therefore, use the solution within 3 months after opening. Reference parameters Salinity: 35 ppt KH: 7.3 dKH Ca: 425 mg/l Mg: 1310 mg/l K: 400 mg/l Sr: 8 mg/l
