User Calibration
If a test method is user calibrated the method name is displayed inverse.
Procedure:
• Prepare a standard of known concentration and use this standard instead of the sample
according to the test procedure.
• It is recommend to use well known standards which are formulated according to DIN EN,
ASTM or other international norms or to use certified standards which are commercially
available.
• After measuring this standard solution it is possible to change the displayed results to the
required value.
• If a method uses a mathematic equation for the calculation of the result, it is only
possible to calibrate the basic tests since all the other tests use the same polynomial.
• The same applies for some test procedures which use a polynomial from another test
procedure.
Return to factory calibration:
If the user calibration is deleted the factory calibration is automatically activated.
Remarks:
The method ”Fluoride” cannot be calibrated with mode 45 since the test requires
a calibration related to the batch of the liquid reagent (SPADNS) (mode 40, chapter
”Fluoride Method 170”).
Table
No. Method Recommended range for user calibration
20 Acid demand 1–3 mmol/l
35 Alkalinity-p 100–300 mg/l CaCO
3
30 Alkalinity-total 50–150 mg/l CaCO
3
31 Alkalinity-total HR T 50–300 mg/l CaCO
3
40 Aluminium T 0.1–0.2 mg/l Al
50 Aluminium PP 0.1–0.2 mg/l Al
60 Ammonia T 0.3–0.5 mg/l N
62 Ammonia PP 0.3–0.5 mg/l N
65 Ammonia LR TT 1 mg/l N
66 Ammonia HR TT 20 mg/l N
85 Boron 1 mg/l B
80 Bromine T Calibration with basic test 100 Chlorine free
81 Bromine PP Calibration with basic test 110 Chlorine free
90 Chloride 10–20 mg/l Cl
-
92 Chloride L 10–15 mg/l Cl
-
100 Chlorine T 0.5–1.5 mg/l Cl
103 Chlorine HR T 0.5–6 mg/l Cl
101 Chlorine L Calibration with basic test 100 Chlorine free
110 Chlorine PP 0.5–1 mg/l Cl
2
111 Chlorine HR PP 4–5 mg/l Cl
2
105 Chlorine (KI) HR 70–150 mg/l Cl
120 Chlorine dioxide T Calibration with basic test 100 Chlorine free
122 Chlorine dioxide PP Calibration with basic test 110 Chlorine free
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