BS 7720:1995
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Specification for non-biological sterilization indicators equivalent to the Bowie and Dick test
Hardcopy , PDF
15-01-2001
English
15-12-1995
Committees responsible
Foreword
Specification
1 Scope
2 References
3 Definitions
4 General system requirements
5 Indicator system format
6 Performance
7 Packaging, labelling and instructions for use
Annexes
A (normative) Method of determining strength after
steam sterilization
B (normative) Method of estimating the visual difference
between the colour of the substrate and the changed
(or unchanged) indicator reagent on the substrate
C (normative) Method of demonstrating uniform colour
change on exposure to dry saturated steam
D (normative) Method of compariang the sensitivity of
the alternative pack system to the standard test
pack system to the standard test pack when air is
injected into the steam exposure apparatus
E (normative) Method of comparing the sensitivity of the
alternative pack system to the standard test pack
when residual air is allowed to remain within the
steam exposure apparatus
F (normative) Method of determining the sensitivity of
the indicator system under exposure to dry heat
G (normative) Method of demonstrating the shelf life of
the product
H (normative) Steam exposure apparatus
J (normative) Standard test pack
K (informative) Air injection system
L (normative) Standard test cycles
Table
B.1 Values of spectral product required of the
reflectance photometer at the given values of
wavelength and illuminance
Figures
1 Example of a suitable format for additional marking
K.1 Air injection apparatus
L.1 Example of sub-atmospheric pulsing cycle
L.2 Example of sub- and super-atmospheric pulsing cycle
List of references
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