Hi All
I think I am being stupid. When measuring for phosphate/nitrate none of the colours to my eye really match up to the colours on the card provided.
I am much happier at moving the vial around on the card to see which colours on the card do/do not show through the test sample. If I then choose a colour on the card which does not show through the sample as too dark then is that the colour I should be looking at?
If I hold the vial up to the light and look at the colour card then I can see a good match, but if I place the vial on the card I find matching difficult. Did I explain that well enough?!
Anyone else have the same problem? Are the Hanna testers idiot proof?
Thanks all.
I think I am being stupid. When measuring for phosphate/nitrate none of the colours to my eye really match up to the colours on the card provided.
I am much happier at moving the vial around on the card to see which colours on the card do/do not show through the test sample. If I then choose a colour on the card which does not show through the sample as too dark then is that the colour I should be looking at?
If I hold the vial up to the light and look at the colour card then I can see a good match, but if I place the vial on the card I find matching difficult. Did I explain that well enough?!
Anyone else have the same problem? Are the Hanna testers idiot proof?
Thanks all.