Lovibond Tintometer MD 100 Manual De Instrucciones página 43

Phosphate HR L / M335
Digestion total Phosphate HR with with liquid reagents
EN
Fill a suitable digestion
vessel with 50 ml
homogenised sample.
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Boil the sample for
20 minutes . A sample
volume of about 25 ml
should be retained;
If necessary, fill with
deionised water.
Add KS 144 (Calcium
Hardness Buffer) drop by
drop to the same sample
until colouration turns from
light pink to red. (Note:
make sure to swirl the
vial after adding each
drop!)
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Add a measuring scoop
KP962 (Ammonium
Persulfate Powder) .
20 min
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Invert the vial and allow to
cool to room temperature.
Fill the sample with
deionised water to 50 ml .
Add 15 drops
KS278 (50% sulfuric
acid).
Add 2 drops
KS135 (Phenolphthalein
Substitute Indikator).
50 ml
EN Method Reference Book 1.0
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