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 homepage. For this a guaranteed true colour print is required, and you need a printer which can be re-calibrated before each printout. Most privately used printers are not accurate enough for this.
We will happily send you a new colour chart bundle with all individual colour charts for the JBL tests free of charge. Please forward the JBL customer service your address.
What can I do when the measured value of a water test falls outside the scale?
If one of your measurements reaches the end of the colour chart scale you can multiply the scale, by diluting the following tests with distilled water (e.g. JBL Dest).
Here’s how to do it: dilute the sample with distilled water and carry out the test once more.
Her’s how in greater detail:
JBL GH test kit: Instead of 5 ml use 10 ml aquarium water. Now 1 drop is equivalent to 0.5 dGH.
JBL KH test kit: Instead of 5 ml use 10 ml aquarium water. Now 1 drop is equivalent to 0.5 dGH.
Note: when using 10 ml sample water the colour development is weaker with the first drops than with 5 ml sample water. Put the measuring container on a white underlay for a better readability.
JBL NH4/NH3 Ammonium/Ammonia test kit, JBL NO2 Nitrite test kit, JBL Fe Iron test kit and JBL Cu Copper test kit:
2.5 ml sample + 2.5 ml dist. water: result times 2
1 ml sample + 4 ml dist. water: result times 5
0.5 ml sample + 4.5 ml dist. water: result times 10
NO3 Nitrate test kit, JBL SiO2 Silicate test kit, JBL PO4 Phosphate sensitive test kit and JBL Mg Magnesium test kit freshwater:
5 ml sample + 5 ml dist. water: result X 2
2 ml sample + 8 ml dist. water: result X 5
1 ml sample + 9 ml dist. water: result X 10
JBL PO4 Phosphate test kit koi high range:
2.5 ml sample + 2.5 ml dist. water: result X 2
1 ml sample + 4 ml dist. water: result X 5
JBL K Kalium test kit:
7.5 ml sample + 7.5 ml dist. water: result X 2
3.75 ml sample + 12.25 ml dist. water: result X 5
1.5 ml sample + 14.5 ml dist. water: result X 10
JBL CO2 direct test kit, JBL Ca Calcium test kit and JBL Mg+Ca Magnesium+Calcium test kit:
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:
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
The instructions point out that the comparator block should be used to compare the colours. Can this be done without the comparator block as well ? Or is there a factor from this comparison that is required for the measurement ?
The colour charts are intended to be used with the comparator block. In addition, when the comparator block is used with the blank water sample, this compensates the inherent water colour.
Therefore, if the comparator block is not used, there will most likely be deviations in the readings.
What is the shelf life of the JBL silicate test ?
The JBL silicate test has a shelf life of 3 years in the original sealed bottle.
The following is printed on the bottom of the packaging:
CH/B: 1411 (e.g.) = batch number
BBD: 11/13 (e.g.) = best-before date.
Please note that the best-before date does not apply for opened reagents. Exposure to atmospheric oxygen decreases the shelf life.
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.
The silicate concentration does not decrease after JBL SilikatEx is used. The Silicate Test always shows a deep-blue to black colouration, which indicates more than 6 mg/l of silicate.
A reading of > 6 mg/l with the silicate test means that there are more than 6 mg/l of silicate in the water. It is not possible to check how many more silicates are present. There may be 10, 50 or even more mg/l of silicates. There are more than 40 mg/l in tap waters in many regions today. The respective water supplier can provide more detailed information or you can dilute the water to be measured with silicate-free water e.g. water that has been distilled twice prior to measuring. In the event that osmosis water is supposed to be used, its silicate content should also be measured. With 40 mg/l of silicates in the starting water JBL Osmose 120 is able to achieve a permeate with 0.4 – 1.2 mg/l of silicate.
Therefore, with silicate values this high, the lowering effect of JBL SilikatEx can only be checked by diluting the water before measuring it.
500 g JBL SilikatEx binds 5000 mg silicate out of the water.
400 g JBL SilikatEx Rapid binds approx. 12000 mg silicate out of the water.
100 l tank with 50 mg/l of silicate in the starting water:
100 l x 50 mg/l = 5,000 mg of silicate.