Macherey-Nagel Visocolor ECO Total Hardness Test

Macherey-Nagel Visocolor ECO Total Hardness Test

  • Facilitates reliable determination of total hardness
  • Sufficient for approx. 110 tests
  • Titrimetric test set
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The precise water test Macherey-Nagel Visocolor ECO total hardness is very well suited for aquaristic use and stands out in particular due to its long durability and many possible measurements.

Complexometric titration(basis for the reaction in analogy to DIN 38406-3 E3) Copper(II) ions can delay the indicator colour change and, if the concentration is higher, even block it totally. If you use tap water from copper pipes, please drain a sufficient amount of water before testing.

Total hardness of the water is based on its content of alkaline earth ions (calcium and magnesium ions). This content depends on the geological conditions in the source area of the water and the area it passes through afterwards, and it differs from region to region. Knowing the total hardness is important when water is used for industrial and municipal purposes, e.g. in the household for washing or for feeding boilers in industry. Residual hardness plays a role when boiler feed water in steam boiler systems, drinking water and rainwater need to be tested.


  • Measuring range: 1 drop = 1° dH
  • Sufficient for 110 tests at an average hardness of 10° dH
  • Suitable for seawater: yes, after dilution (1 + 29)
  • Not suitable for compact photometer PF-12

Product safety

Safety information in accordance with GHS


Signal word: Warning

  • H226 Flammable liquid and vapour.
  • H315 Causes skin irritation.
  • H319 Causes serious eye irritation.



The Germany company Macherey-Nagel GmbH & Co. KG has a long tradition, as it was founded in 1911. This company is an important manufacturer of chemical analytic products for professional use. Due to its specialisation in water tests, Macherey-Nagel is able to offer a vast product range particularly suitable for aquascapes and planted tanks. In the aquascaping and planted tank hobby, the colorimetric line of water tests Visocolor has gained a very good reputation, as these tests are very exact and have a long useful life.

Compared with many water test manufacturers that produce purely for aquaristic purposes, the knowledgeable customer service offered by Macherey-Nagel is on another level. This company helps their customers very well should they happen to run into a problem. For those interested in precise water tests the products by Macherey-Nagel are recommended as they will definitely meet their expectations.

General information

Item no.
EAN 4046681006043
Weight 0,10 kg
Shipping weight 0,30 kg

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Artur &.
High quality
3rd July 2022

The test is expensive (IMHO too much), but it offers an adequately high quality. I test a lot and compared to other brands, the color change is extremely readable, and the... (read more)