Product Details

  • Easy and reliable monitoring of the water values of aquariums and ponds.
  • Determines the ideal pH value for freshwater and seawater.
  • Laboratory comparator system to compensate the inherent water colouring: fill plastic cuvette with sample water, add reagent to another cuvette, place both cuvettes in holder, read values on colour chart.
  • When to use: for setting up a new aquarium: daily for one week, afterwards weekly.
  • Online Laboratory: regular control for a healthy aquarium/pond with conditions close to nature.
  • JBL has water tests in the form of quick tests or colour change tests for every water analysis. Testing aquarium water for healthy, clear water.
  • Package contents: 1 quick test, pH Test 7.4-9.0. Contents for approx. 80 measurements. Incl. reagent, 2 glass vials with screw cap, syringe, dosing spoon and colour scale. Refill reagent available separately.


Healthy aquarium/healthy pond with conditions close to nature:

  • The right water values are dependent on the fish stock and the plants in the aquarium/pond.
  • Even if the water looks clear it can be contaminated.
  • With bad values diseases or algae can appear in the aquarium/pond.
  • To maintain a healthy aquarium/pond with conditions close to nature it is important to check and adapt the water values regularly.

For each water analysis JBL provides water tests in the form of quick tests or colour change tests. These determine a certain value or several values in one go. With these water tests you can recognise algae problems and negative nitrate, nitrite, potassium, magnesium values etc.

Why test?

  • The well-being of aquarium and pond dwellers and the growth of aquatic plants depend to a large extent on the pH level being kept as constant as possible.
  • The pH level can also affect many substances dissolved in the water.
  • Fluctuations in the pH level are definitely to be avoided.

JBL Online Laboratory

  • Regular control for a healthy aquarium/pond with conditions close to nature.
  • Enter your water values into the JBL Online Laboratory and get an in-depth analysis of your values within seconds.

Recommended pH values:

  • Freshwater aquarium (community aquarium): 6.5-7.5
  • Lake Malawi/Lake Tanganyika aquarium: 7.8-9.2
  • Plant aquarium with few fish (aquascaping): 6.0-7.0
  • Marine aquarium: 7.9-8.5
  • Pond: 7.5-8.5


Where can I find the record sheets for the documentation of my water analysis?

> Have you lost your record sheets, already filled them all in or do you need them in another language?

With the following links you can quickly and easily print out your new record sheets with recommendations for the individual parameters at home and document the water analyses.


Does the pH test 3 – 10 also reliably measure in weakly buffered solutions?

> Osmosis water and water with a KH below 1° dKH rank in aquatic terms among the weakly buffered solutions. In these waters such test procedures cannot provide reliable measurement results.

I have lost my colour chart. Can I download the colour chart for the test?

> The colour cards are not available for download on the JBL website. The absolutely accurate colour reproduction that is required can only be achieved using a printer which can be re-calibrated before each printout. Most privately used printers are not accurate enough for this.

You will find the colour chart bundle as a spare part on the respective product page and in the spare parts shop under:

Which of the three scales on the colour cards symbolize of the water tests saltwater, freshwater and garden pond ?

>koi carp = garden pond

angel fish = saltwater

discus = freshwater

Which scale applies for my aquarium? My test has two or three control fields with fish and recommendations.

> We repeatedly receive questions regarding the symbols on the water test.

  • The hobby areas cannot be clearly assigned to the scales for analysis.
  • There are three symbols to make the hobby areas on the colour charts clear:

Discus = fresh water

Emperor = salt water

Koi = garden pond

In the following, you will find a list which assigns the scale for analysing the results from measurements in the hobby area and explains the symbols: The scales are described from the top to the bottom here.

NO3: salt water, fresh water, garden pond

pH 6.0 – 7.6: fresh water, garden ponds

pH 7.4 – 9.0: salt water, fresh water, garden pond

Fe: fresh water, garden pond

The following JBL tests have a uniform scale for all 2 or 3 hobby areas for analysis of the results from the measurements, as differentiation is no longer necessary:






pH 3-10


What is the shelf life of the JBL pH Test 3-10 ?

> The JBL pH test 3-10 has a shelf life of 4 years in the original sealed bottle.

The following is printed on the bottom of the packaging:

CH/B: 2559 (e.g.) = batch number

BBD: 01/15 (e.g.) = best-before date (month/year)

Please note that the best-before date does not apply for opened reagents. Exposure to atmospheric oxygen decreases the shelf life.

On the bottle of the JBL pH Test 3.0-10.9, it states 3 drops, whereas it states 4 drops in the instructions.

> 4 drops are correct. 3 drops will also work, the pH level is indicating correctly, but the colour development is less intense.

The instructions for JBL pH Test 3-10 state that 4 drops should be added. On the reagent bottle, though, 3 x drops are shown. Which information is valid?

> Both, but 3 drops are enough. With 4 drops, the colour is somewhat stronger, which can make it easier to read the results.

Do my water tests still work although they have been open for nine months?

> Basically a sealed test keeps longer than an open one. How much the shelf life is reduced depends crucially on the handling and the storage conditions of the reagents. It may happen that a reagent in a test that has been open for 9 months doesn’t indicate correctly any more. However, additional information is needed to answer this question properly.

JBL pH Test Set 7.4-9.0

SGD 16.00

Out of Stock

Delivery takes 3 to 7 working days. Delivery fees will be shown upon checkout.