multi N/C pharma UV
Operation
53
TOC water (ultrapure water) as system water (device-internal rinsing water) and
for the preparation of standards with the following requirements (conductivity <
1.0 µS/cm (at 25 °C), TOC < 0.1 mg/l
orthophosphoric acid (H
3
PO
4
) 10 % prepared from orthophosphoric acid
(concentrated) p. A. and TOC water
sodium peroxodisulfate solution Na
2
S
2
O
8
(concentration 80 g/l) and 10 ml sulfuric
acid H
2
SO
4
(concentration 2 mol/l) as reagent for UV digestion
sulfuric acid H
2
SO
4
(concentration 2 mol/l) to acidify the sample
standard substances (e. g. potassium hydrogen phthalate, sodium
carbonate/sodium hydrogen carbonate, saccharose)
gas supply (nitrogen/argon)
acid-proof safety gloves, safety goggles
PC, monitor and printer for multi N/C pharma UV (if delivered without PC)
6.2
Switching on the analyzer (standard commissioning)
ATTENTION
Damage to optical and electronic components (detectors, flow sensors) from
aggressive combustion products if the copper wool in the halogen trap is used up!
Replace the complete filling of the halogen trap if half of the copper wool is discolored
black or the brass wool is discolored!
Always check the following before switching on the analyzer:
The waste hose is connected to a suitable waste container or drain, clear drainage
is ensured and the capacity of the waste container is adequate.
The gas supply is connected in accordance with regulations and the preliminary
pressure is 4 to 6 bar.
The reagent bottles contain sufficient reagents for the analysis:
1 ml phosphoric acid (H
3
PO
4
) for the TIC detection per analysis
2 ml sodium peroxodisulfate (Na
2
S
2
O
8
) for TOC, TC, NPOC detection
The halogen trap is connected, filled with copper and brass wool and still usable
(see safety note above).
The hoses in the analyzer are connected properly and in good working order, e.g.:
ultrapure water: hose no. 5
reagent bottle with H
3
PO
4
: hoses no. 2 and A
reagent bottle with Na
2
S
2
O
8
: hoses no. 3 and B
sample intake cannula: hose no. 6
sample purge cannula: hose no. 10
If applicable, check that additional optional components are connected correctly:
Samplers.
Содержание Analytik Jena multi N/C
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