Thermo Scientific AQUAfast AQ3170, User Manual

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4 5 Version 1 02/2017 AQ3170 Chlorine Colorimeter PROFORMA User Guide
General Notes
Guidelines for photometric measurements
1 . Vials, caps and stirring rods should be cleaned thoroughly after each analysis to prevent interference .
Even minor reagent residues can cause errors in the test result .
2 . The outside of the vial must be clean and dry before starting the analysis . Clean the outside of the vials
with a towel to remove fingerprints or other marks.
3 . Zero calibration and test must be carried out with the same vial as there may be slight differences in
optical performance between vials .
4 . The vials must be positioned in the sample chamber for zeroing and test with the mark on the vial
aligned with the mark on the instrument .
5 . Always perform zeroing and test with the vial cap tightly closed . Only use the cap with a sealing ring .
6 . Bubbles on the inside wall of the vial lead to incorrect measurements . To prevent this, remove the bubbles
by swirling the vial before performing the test .
7 . Avoid spillage of water into the sample chamber because this can lead to incorrect test results .
8 . Contamination of the transparent cell chamber can result in wrong readings . Check at regular intervals
and – if necessary – clean the transparent cell chamber using a moist cloth or cotton buds .
9 . Large temperature differences between the instrument and the environment can lead to errors – e.g. due
to the formation of condensation in the cell chamber or on the vial .
10 . To avoid errors caused by stray light do not use the instrument in bright sunlight .
11 . The reagents must be added in the correct sequence .
Method Notes
• Prior to measurement ensure that the sample is suitable for analysis (no major interferences) and does
not require any preparation i.e. pH adjustment, filtration etc.
• Reagents are designed for use in chemical analysis only and should be kept well out of the reach of children .
• Ensure proper disposal of reagent solutions .
• Safety Data Sheets are available on request .
Correct filling of the vial:
Correct position of the vial (Ø 24 mm):
CAUTION:
To ensure that the instrument is water proof:
seal ring (E) must be in position
battery compartment cover (B) must be fixed with the four screws
If the batteries are removed for more than one minute the date and time menu starts automatically when the photo-
meter is switched on the next time .
Battery Replacement:
AA
A/L
R0
3
AA
A/L
R0
3
AA
A/L
R03
AA
A/L
R03
(D) batteries
(E) seal ring
(C) notch
(F) instrument back
(B) battery com-
partment cover
(A) screws
General Notes