Fritz Alkalinity Test Kit

Details

Carbonate hardness, or alkalinity (KH), is the measure of both carbonates and bicarbonates present in the water. The KH value of your water is important to know, as the carbonate hardness plays a significant role in the waters pH and the waters buffering capacity to keep that pH stable. KH naturally falls over time with the introduction of CO2 and other acids, and nitrification. Reverse osmosis water should be buffered with carbonates before use to raise and maintain KH. Some municipal tap water can have variable KH levels throughout the year and should be checked regularly. In saltwater tanks, KH can be tested to monitor the proper ionic balance when dosing.

Soft water fish, like Discus and other South American cichlids – 0 to 4 dKH (0 – 70 ppm)
Tropical community fish, like tetras and betta – 4-8 dKH (70 – 140 ppm)
African rift lake cichlids – 8 to 12 dKH (140 – 215 ppm)
Marine species – 8 to 12 dKH (140 – 215 ppm)

Directions:

To remove childproof safety cap, push down while turning.

1. Fill a clean test tube with 5 ml of water to be tested(to the line on the tube).
2. Holding KH Reagent Solution dropper bottle upside down ina completely vertical position add one drop at a time. Cap thetest tube and gently shake between drops. Ensure you countthe drops as they are added.
3. The test is complete when the water in the test tube, afterhaving been gently shaken, turns from blue to yellow. Ifyou have difficulty discerning the color after the first dropof test solution is added, remove the cap from the test tubeand while holding it over a white background, look downthrough the tube.

The KH value is determined by the number of drops ofreagent that must be added to turn the water in the testtube yellow. See conversion chart to determine KH.