Page 90 - The Veterinary Laboratory and Field Manual 3rd Edition

The selection, use, maintenance and quality control of laboratory equipment and supplies 59

Figure 2.19 Datalogger with internal probe. Photo: Figure 2.20 Digital datalogger with multiple probes.
Willy Schauwers, Provincial Institute for Hygiene, Photo: Willy Schauwers, Provincial Institute for
Antwerp, Belgium. Hygiene, Antwerp, Belgium.

and falling temperatures (like 3M Freeze quaLIty aSSurancE ProtocoL
Watch and 3M MonitorMark), are: • Daily temperature registration, minimum/
maximum temperatures or actual tempera-
• an inexpensive solution for monitoring tures are registered for each temperature
product exposure control device (refrigerator, freezer and
• self-adhesive: stick securely to most exte- incubator) and for the laboratory room(s)
rior packaging materials with HVAC (heating, ventilation and air con-
• easily interpreted: visual results. ditioning). This should be done on a daily
basis (the same time in the morning when
Remark: sometimes the mercury column of entering the laboratory). See ‘FORM-SOP-
(mercury) thermometers is broken (interrupted) LABORATORY-EQUIP-05–01 Temperature
after they have been transported by air. This registration min max thermometer’ or
happens quite often with mercury minimum/ ‘FORM-SOP-LABORATORY-EQUIP-05–02
maximum thermometers. Thermometers with Temperature registration thermometer’.
interrupted mercury columns are not fit for use • If the temperature of a laboratory device is
in the laboratory. Another reason not to use non- not within the prescribed range, an inspection
mercury thermometers. and corrective measures need to be taken. See
‘FORM-SOP-LABORATORY-EQUIP-05–03
Corrective measures’.

Vet Lab.indb 59 26/03/2019 10:25