Multi Reference 100ml - test your test kits!

With this reference, it is possible to test your water tests under real conditions. The references are not made from fresh water, the ions spectrum was according to the test media.


With the Fauna Marin Multi-Reference Solution, you can test your test kits under accurate conditions. Our Reference Solution is the first to be based on a saltwater matrix and is quality tested using our ICP-AES testing machine. We use a saltwater matrix that is similar to aquarium water so that all common variables which affect normal water tests are taken into account.

Each batch is quality controlled and tested in our Seawater Research Laboratory to ensure accurate and reliable solutions, every time.

Our 100ml solution is stable and combines all these values into a single solution - the values vary with each batch! Please check your Multi Referenz bottle for the respective values.

Calcium – 425 mg/L
Magnesium – 1,315 mg/L
Potassium – 375 mg/L
Salinity – 33.9 ppt (51.6 mS) @ 75°F
Alkalinity – 7 DKH (2.5 meq/L)
Strontium – 7.1 mg/L
Nitrate – 11.5 mg/L
Phosphate – 0.05 mg/L

Multi-Reference Solution is especially useful for
  • Testing the validity of new test kits
  • Verifying results after unexpected test results
  • Testing kits that were stored for a long time
  • Checking an expired test kit’s accuracy
  • Calibrating your refractometer

Measurement of the reference solution with a magnesium test gives you a result of 1,000 mg/L.

  • The reference solution however contains 1,314 mg/L
  • The ratio therefore is: 1,314 mg/L : 1,000 mg/L
  • The correction factor is noted on the magnesium test
  • A later measurement with this magnesium test results in the aquarium water: 1,300 mg/L
  • Calculation: 1,300 mg/L * 1.314 = 1,708.2 mg/L


SKU 1540
Barcode # 4260119452152
Brand Fauna Marin
Shipping Weight 0.1500kg
Shipping Width 0.040m
Shipping Height 0.040m
Shipping Length 0.120m