Lovibond Maxi Direct - Page 151

149
MaxiDirect_2c 03/2010
1.1 Methods
Notes:
1. For samples under 5 mg/l PO
4
it is reccommended to analyse the water sample with
method 320 ”Posphate LR, ortho with Tablet“.
2. Only ortho-Phosphate ions react.
3. see also page 145
4. Conversions:
mg/l P = mg/l PO
4
x 0.33
mg/l P
2
O
5
= mg/l PO
4
x 0.75
5. PO
4
P
P
2
O
5