User Calibration - Thermo Scientific AQUAfast AQ3700 User Manual

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 polynom from another test
procedure.
Return to factory calibration:
If the user calibration is deleted the factory calibration is automatically activated.
Remarks:
The "Fluoride" method cannot be calibrated with mode 45 since the test requires
a calibration related to the batch of the liquid reagent (SPADNS) (mode 40, chapter
"calibration (fluoride)").
Table
No. Method
20 Acid demand
35 Alkalinity-p
30 Alkalinity-total
40 Aluminium T
50 Aluminium PP
60 Ammonia T
62 Ammonia PP
65 Ammonia LR TT
66 Ammonia HR TT
85 Boron
80 Bromine
90 Chloride
100 Chlorine T
101 Chlorine L
110 Chlorine PP
105 Chlorine (KI) HR
120 Chlorine dioxide
130 COD LR
131 COD MR
132 COD HR
150 Copper T
Thermo Scientific Orion AQUAfast AQ3700 Colorimeter User Guide
Recommended range
for user calibration
1-3 mmol/l
100-300 mg/l CaCO
3
50-150 mg/l CaCO
3
0.1-0.2 mg/l Al
0.1-0.2 mg/l Al
0.3-0.5 mg/l N
0.3-0.5 mg/l N
1 mg/l N
20 mg/l N
1 mg/l B
Calibration with basic test 100 Chlorine free
10-20 mg/l Cl
0.5-1.5 mg/l Cl
Calibration with basic test 100 Chlorine free
0.5-1 mg/l Cl
2
70-150 mg/l Cl
Calibration with basic test 100 Chlorine free
100 mg/l O
2
500 mg/l O
2
5 g/l O = 5000mg/lO
2 2
0.5-1.5 mg/l Cu
233