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SILKOSTAT 9210
CALIBRATION SOLUTION
By diluting an appropriate volume of the concentrated solution (at 21.39 mg/litres) with
demineralised water, various calibration solutions with a known concentration of SiO
2
may
be prepared :
Suggestion for calibration solution preparation (for 2 litres)
ml of concentrated
solution 21.39 mg/l
calibration
solution
ppb Si
calibration
solution
ppb SiO2
Instrument
Measuring range
10 50
107
0-200
ppb
20 100
213.9
0-200
ppb
25 125
267.4
0-500
ppb
50 250
534.8
0-1000
ppb
Positioning the canisters
Reagent tubings are tagged as 1 to 3. They come with an analyser and
are fed through the special stoppers on the reagent canisters. One end of
these pipes is fitted with a chemically inert, PVC strainer that is used to
position the pipes in the bottom of the canisters.
Before starting analyser, it is necessary to connect each cap on its
canister :
•
Tubing N° 1 on the reagent canister
R1:
Sodium molybdate and
sulphuric acid.
•
Tubing N° 2 on the reagent canister
R2
: Oxalic acid reagent.
•
Tubing N° 3 on the reagent canister
R3
: Sulphuric acid and ferrous
ammonium sulphate
.
Screw the cap on the canisters. Then, check that the strainer is resting in
its proper position at the bottom of the canister. Put the canister on the
canister-stand to have cap towards interior as shown figure 7
Содержание POLYMETRON 9210
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