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5B
SAMPLE AND REAGENT PROBES
5B1
Summary of Preventive Maintenance
WARNING
To prevent eye damage, wear safety glasses.
Maintenance
Material
1.
Clean sample and reagent probes.
10-mL syringe
2.
Check alignment of sample and reagent
probes in reaction cuvettes.
0.030-inch gauge (P/N 192-R263-01)
3.
Check alignment of sample probe in sample
cups, and reagent probe in reagent boats.
N/A
4.
Check reagent probe heater.
YSI 4502 Thermistor probe
YSI 45 CU Thermometer
Modified reaction tray cover
Figure 5B-1 SAMPLE PROBE CLEANING
5B2
Figure 5B-2 REAGENT PROBE CLEANING
Cleaning New Sample and Reagent Probes
1.
Remove the sample probe assembly from the probe arm.
2.
Connect a 10-mL syringe to the sample probe line as illustrated in Figure 5B-1. (Refer to Figure 5B-2
when cleaning reagent probes.)
3.
Immerse the probe tip in a beaker filled with System Wash Solution (T01-1287).
4.
Use the syringe to force wash solution back and forth through the probe for approximately five minutes.
Occasionally remove the probe tip from the wash to aspirate air in 0.5-mL slugs (approx.). The air
bubbles will help to scrub the inner walls.
5.
Repeat Step 3 with distilled water. Rinse thoroughly.
5-2