Lovibond Tintometer Manual Del Usuario página 62

3 8
Ø 16 mm
62
TOC HR
1
with MERCK Spectroquant
Cell Test, No. 1.14879.0001
50 – 800 mg/l TOC
Use two clean suitable glass containers and mark one as
blank for zeroing.
1. Fill a clean glass container with 10 ml of deionised
water (this is the blank).
2. Fill the other clean glass container with 1 ml of the
water sample. Add 9 ml deionised water and mix
(this is the sample).
3. Fill each glass container with drops of the same size by
holding the bottle vertically and squeeze slowly:
2 drops reagent TOC-1K and mix.
4. pH value of the solution must be below 2.5.
If necessary adjust the pH with sulphuric acid.
5. Stir for 10 minutes at medium speed (magnetic stirrer,
stirring staff).
Digestion:
Use two clean reaction tubes (16 mm Ø) and mark one as
blank for zeroing.
6. Pipette 3 ml pre-prepared blank into one reaction
tube (blank).
7. Pipette 3 ml pre-prepared sample into one reaction
tube (sample).
8. Add 1 level microspoon of reagent TOC-2K to each
reaction tube.
9. Immediately close the vials tightly with an aluminium
cap.
®
07/2017