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BS 7720:1994

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by
superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.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 indicator systems for use in the Bowie and Dick test with alternative test loads
Available format(s)

Hardcopy , PDF

Superseded date

15-12-1995

Language(s)

English

Published date

15-09-1994

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 for determining strength after
     steam sterilization
B (normative) Method for the estimation of 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 for comparing the sensitivity of
     the alternative 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 for determining the sensitivity
     of the indicator system under exposure to dry heat
G (normative) Method for 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

Specifies requirements for systems for use in combination with specified test loads in steam sterilizers for wrapped goods.

Committee
CH/198
DevelopmentNote
DRAFT FOR COMMENT 92/58870 DC
DocumentType
Standard
Pages
20
PublisherName
British Standards Institution
Status
Superseded
SupersededBy

BS EN 28601:1992 Specification for representation of dates and times in information interchange
BS 1384-3:1985 Photographic density measurements Specification for spectral conditions
BS EN 22248:1993 Complete, filled transport packages. Method for determination of resistance to vertical impact by dropping
BS EN 20187:1993 Paper, board and pulps. Standard atmosphere for conditioning and testing and procedure for monitoring the atmosphere and conditioning of samples
BS 1384-4:1985 Photographic density measurements Specification for geometric conditions for reflection density
BS 3970-3:1990 Sterilizing and disinfecting equipment for medical products Specification for steam sterilizers for wrapped goods and porous loads
BS 5750-1:1987 Quality systems Specification for design/development, production, installation and servicing

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