Dip the syringe into the liquid before drawing up the syringe. Shake the bottles before use! Rinse out the glass cuvette with tap water and then several times with aquarium water. Fill the glass cuvette with exactly 5 ml of aquarium water using the dosing syringe. Then add 3 drops of reagent A and swirl the cuvette carefully. The water sample will turn turquoise. Place the enclosed dropper tip on the small syringe and draw out 1 ml reagent B. Add reagent B from the syringe to the water sample drop by drop until the water changes color from turquoise to dark-blue then to a clear pink color. Swirl the cuvette after each new drop. The measurement is complete when the sample has reached a clear pink color without any blue tinge. The consumption of reagent B (difference of 1 ml) multiplied by 10 constitutes the alkalinity in degreedH. Rinse out the glass cuvette, the syringe and the dropper tip thoroughly with tap water after the measurement process.

Keep away from heat, hot surfaced and open flames since product has flammable liquid.