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Salifert KH/ALK Profi Test

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Salifert KH/ALK Profi Test

Calcium alone cannot form the skeletal material of corals and allow calcareous algae to grow. Some other substances are needed as well. A few other constituents are carbonate and bicarbonate. These two substances also have a major impact on the stabilization of the pH in the proper range of 8.1–8.4. Such stabilisation is also called buffering.

The total carbonate and bicarbonate concentration is also called carbonate alkalinity or carbonate hardness. The only difference between alkalinity and carbonate hardness is a conversion factor.

Natural seawater has an alkalinity of approx. 2.7meq/L or approximately 7.5dKH when expressed as carbonate hardness.

For a stable system the alkalinity or carbonate hardness should have a value similar to NSW or slightly higher and should preferably not fluctuate by more than 5%. This means a maximum fluctuation of 0.14meq/L or 0.4dKH.

Therefore an alkalinity test kit should be capable in measuring in steps smaller than 0.14meq/L.

Since the major buffer components used for coral and calcareous algae growth are bicarbonate and carbonate, they should be added to correct any decrease in alkalinity or carbonate hardness.

A proper formulated buffer should function in such a way that the corrective measures results in a long lasting effect and should not upset the pH of the system. The alkalinity or carbonate hardness should be kept as stable as possible requiring highly sensitive and accurate means for testing.

The Salifert KH/Alkalinity Test Kit is very straightforward. It measures in sufficient small steps of 0.1meq/L or 0.3dKH  with a sharp color change. This makes detection of important yet small change possible.

INCLUDED IN THE KIT:

  • Instruction Manual
  • Plastic Vial
  • Syringe 5ml
  • Syringe 1ml
  • KH Reagent – 50ml
  • KH Indicator – 10ml
  • KH/Alkalinity Standard Check Solution 15ml

100-200 Tests

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