Control of sterilisation processes Flashcards
1
Q
Define quality control
A
Involves testing of the final product - can only test a small batch
2
Q
Define quality assurance
A
Designed to assure that all the stages of the manufacturing process contribute to quality of the end product
3
Q
Name some environmental measures used to control manufacturing area
A
air - settle plates
surfaces - contact plates, swabbing
4
Q
Describe physical indicators
A
- Heat sterilisation - digital record of temperature, taken at coolest part of loaded steriliser
- Gaseous sterilisation - leak tests, pressure testing
- Radiation - plastic dosimeter that darkens in proportion to radiation
Filtration - bubble point pressure test
5
Q
What do chemical indicators do?
A
Usually undergo melting and change of colour that can be observed
Not necessarily corresponds to microbiological sterility
6
Q
Describe Browne’s Tubes
A
During heating an acid is produced
Indicator changes colour
Speed of reaction determined by temperature determines the colour change
7
Q
A
