Disinfection Temperature Bands

Disinfection Period	Disinfection Temperature	Maximum Temperature Allowed
10 minutes at	65°C	70°C
3 minutes at	73°C	78°C
1 minute at	80°C	85°C
0.2* minutes at	90°C	95°C
*BS 2745 Part 1 indicates that exposure time at 90°C is 1 second however this is too short for reliable measurement so 12 seconds (0.2 minutes) should be used.

Generic Instrument Washer Disinfector Cycle

 

 

 

 

 

 

Thermometric Test: Instrument Washer Disinfector

Thermometric Test

Thermocouple probes should be placed in the following positions: A load item at each level of the load carrier The area known to be slowest to reach temperature The area known to be the quickest to reach temperature Adjacent to the automatic control centre Adjacent to the recorder sensor, if a multi-compartment machine one probe adjacent to each recorder sensor Temperatures are to be within +/- 2°C for the required time. On completion of the cycle a check must be made to confirm all test probes remain in the correct positions. Due to the variation of instrument washer disinfectors and loads, advice may be required to determine if the results obtained are satisfactory.