The wishlist name can't be left blank

JBL NH4 Test - Ammonium - Refill 10 ml.

JBL NH4 Test - Refill

Recommended value: max. 0.25 mg/l NH₄.
For approx. 50 measurements with glass cuvettes.
For fresh water and salt water. Range of values: < 0.05; 0.1; 0.2; 0.4; 0.6; 1; 1.5; 3; 5 mg/l.

In stock

JBL NH4 Test - 10ml Refill

Why isn’t the colour card for the JBL ammonium test NH4 available for download on the JBL homepage ?
The colour cards are not available for download on our homepage. For this a precise true colour print is required, for which you need a printer which can be re-calibrated before each printout. Most printers are not accurate enough for this.

Please forward your address to and we will send you a new colour card.
Does the JBL ammonium test NH4 measure only ammonium NH4+ or does it also measure ammonia NH3 ?
The JBL ammonium test NH4 measures both ammonium NH4+ and ammonia NH3.
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. Besides this, when the comparator block is used, the blank water sample compensates for the water’s natural colour.

Therefore, if the comparator block is not used, there will most likely be deviations in the readings.

More Information
Name JBL NH4 Test - Ammonium - Refill 10 ml.
SKU JBL25366
Manufacturer JBL