Calcium Test Kit

Lighting Protein Skimmer Reef care Supplements Water Test Kits Salt und Sea Water Others

Water test kit Ca

 Water test kit


  • Professional, laboratory-controlled test kit for measuring the calcium value of seawater

  • High yield, sufficient for at least 100 applications with 500 mg/l Calcium

  • Easy handling due to clear color change

  • High Resolution (Accuracy): 5 mg/l

  • Range: 5 – 500 mg/l

  • Incl. multistandard

  • Refill Pack available

Measure the calcium value at laboratory level

Our calcium test is used for the high-precision determination of the calcium value in seawater and is characterized by high accuracy and yield. For control purposes, a 100 ml multi-standard solution is included. This multi-standard solution can also be used to check other water parameters (e.g., salinity, calcium, magnesium, etc.).


Controlled safety

The production of our reef care products is subject to strict monitoring by our own laboratory. The quality assurance helps us in the selection of the purest raw materials and leads to end products in best quality. The accuracy of the calcium test was also adjusted and tested in our laboratory.


Operating instructions (download)

If your operating instructions are lost or otherwise unusable, you will find the operating instructions as a replacement for download here. Simply click on the symbol (book), the instruction manual opens in a new window as PDF.

Hover your mouse pointer over the image of the test kit, to get further information about its components.


Ca test kit open


Operating instructions

Operating instructions
(klick on the book icon above, on the right side to download the instructions as PDF.)

Syringe 1 ml

1 ml syringe
(e.g. to take 1 ml sample from the aquarium. Put it in the titration tube and mark syringe for later operations.)

Syringe1 ml

1 ml syringe
(e.g. for the titration of reagent Ca 3. Take 1 ml of reagent Ca 3, drop it slowly into the titration tube until the color changes from pink to blue.)

Syringe5 ml

5 ml syringe
(to dilute the sample, add 4 ml ultra pure water (< 0 µS!) to it.)


(To check accuracy and function of home test kits.)

Ca 3

Reagent Ca 3
(Solution for the detection of calcium.)

Ca 1

Reagent Ca 1
(Attention: corrosive! Add 10 drops to diluted sample.)

Titration tube

Titration tube
(Chamber for the reaction of the different reagents.)

Ca 2

Reagent Ca 2