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JBL Mg Test Fresh Water

JBL Mg Test Fresh Water

  • Shows 0 to 10 as well as over 10 mg/l precisely
  • Very precise test with 3 reagents
  • Laboratory comparator system compensates for possible staining of the water
  • Syringes for water sampling are included
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The JBL Mg test set is an easy-to-use quick test for determining the potassium level of freshwater.


  • Indicates 0 to 10 as well as > 10 mg/l exactly
  • Very accurate test with 3 reagents
  • The comparator system takes the existing intrinsic colour of the water into account
  • With 2 glass tubes, syringe for the accurate measurement of 5 ml, reagents and laminated colour cards
  • Mg deficiency is indicated by yellow light spots between the leaf veins and by stagnating plant growth

Product safety

Safety information in accordance with GHS


Signal word: Danger

  • H314 Causes severe skin burns and eye damage.



JBL is a German company with a long tradition and a vast product range for aquarium enthusiasts. From high-quality fish and shrimp food over external filters to aquatic plant fertilisers - JBL offers an enormous choice for every aquarium keeper.

The research and development department of JBL constantly brings new innovative products onto the market. No matter whether you are an aquascaper, fish keeper, shrimp keeper or planted tank enthusiast, JBL offers suitable tools and accessories for all of these aspects of the hobby in order to support aquarium enthusiasts with the set-up and maintenance of their tanks.

General information

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Customer reviews

This item has been rated 2.3 out of 5 stars
4 Reviews
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5 Stars(1)
4 Stars(0)
3 Stars(0)
2 Stars(1)
1 Star(2)
Diego Z.
Magnesium test
25th March 2017
JBL - Mg Test - Freh Water - Test kit
JBL - Mg Test - Freh Water - Test kit

It's one of the few existent Mg test for freshwater. I use it to test the Mg content in my tanks. By using 10 ml of water, 3 reagents and a colour chart, you can determine... (read more)

Alexander B.
Test um zu schauen ob MG drin ist oder nicht...mehr aber auch nicht.
9th March 2015
JBL - Mg Test - Freh Water - Test kit
JBL - Mg Test - Freh Water - Test kit

Habe den Test in meinen JBL Pro Scape Koffer mit drin. 8 Farbfelder 1Gelb>1 Besch/Orange>3 Fast gleich aussehendes Orange>3 Fast gleich aussehendes Rot Habs ein paar mal... (read more)

Dennis M.
30th September 2015
JBL - Mg Test - Freh Water - Test kit
JBL - Mg Test - Freh Water - Test kit

Ich habe mir das Magnesium-Paket von JBL gekauft, da ich endlich mein Magnesium:Calcium Verhältnis in Ordnung bringen wollte. Das, was JBL aber da anbietet ist unter aller Sau. (read more)

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