Salifert KH/ALK profi test

The Salifert KH/Alkalinity Profi Test is particularly useful in reef aquariums, where alkalinity stability affects pH buffering and the formation of coral skeletons.

A colour indicator is added to the water sample, followed by KH reagent from the titration syringe. The reagent is added drop by drop until the sample changes from blue-green to orange-red or pink. The remaining reagent in the syringe is converted into dKH or meq/l using the included table.

Key features

• Measures carbonate hardness and alkalinity
• Suitable for marine aquariums
• Suitable for freshwater aquariums
• Suitable for garden ponds
• Results in dKH and meq/l
• Resolution approximately 0.3 dKH
• Resolution approximately 0.1 meq/l
• Sharp colour-change endpoint
• Suitable for monitoring reef-aquarium consumption
• Useful for adjusting dosing systems
• Useful for monitoring calcium reactors
• Approximately 100–200 tests
• Standard and lower-resolution test modes
• No electronic meter or batteries required

Technical information

• Product: Salifert KH/Alkalinity Profi Test
• Test type: liquid titration test
• Parameters: carbonate hardness and alkalinity
• Units: dKH and meq/l
• Standard sample volume: 4 ml
• Lower-resolution sample volume: 2 ml
• Approximate number of tests: 100–200
• Suitable water types: marine, freshwater and pond water

Directions

1. Add 4 ml of water to the test vial.
2. Shake the KH-Ind bottle and add two drops.
3. Attach the plastic tip to the 1 ml syringe.
4. Draw KH reagent until the lower edge of the black piston is at 1.00 ml.
5. Add reagent drop by drop while swirling the vial.
6. Stop when the colour changes from blue-green to orange-red or pink.
7. Hold the syringe with the tip upward.
8. Read the remaining reagent at the upper edge of the black piston.
9. Determine the result from the included table.

The result may also be calculated:

KH in dKH = (1 − syringe reading) × 16

Alkalinity in meq/l = (1 − syringe reading) × 5.71

For the lower-resolution mode, use 2 ml of sample and one indicator drop, then multiply the result by two.