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The phosphate test doesn't show any blue colouration, but instead shows a slightly yellowish colouration, which is not shown on the colour chart.
This is probably due to an error in use. The JBL Phosphat Test sensitive requires the following reagents:
1) 1 small level measuring spoon (narrow end of the enclosed double spoon) of Reagent 1.
2) 10 drops of Reagent 2.
3) Shake the sample lightly.
4) Allow 10 minutes for the colour to develop and then read the phosphate level using the comparator block.
It is important to use one small measuring spoon of Reagent 1 and not a large measuring spoon.
Che tradotto: hai messo il cucchiaino (parte piccola) di reagente 1 prima delle gocce del reagente 2 ?
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