Page 202 - ERMIS Accessories

8 Quality monitoring

Batch control - TST Bowie & Dick single use test pack / for steam sterilization for small sterilizers type B
and large sterilizers
REF pack. unit

92-50005 A successful test confirms that steam penetration 1 box
into a test pack is rapid and even and, by
implication, that air and other non-condensable
gases have been effectively removed. The
chemical indicator sheet at the centre of the pack
shows a defined colour change from yellow to
dark blue / purple when exposed to a specific
combination of time, temperature and steam.
When there is no air or other non-condensable
gases in the chamber, steam will penetrate the
pack rapidly and completely and the indicator will
show a uniform colour change. When air or other
non-condensable gases are present they will
collect towards the centre of the pack as an air /
gas pocket which will impair contact between the
steam and the indicator sheet. The temperature or
moisture level (or both) will be lower in the region
of the air / gas pocket and will result in a
non-uniform colour change of the indicator;
distinct yellow markings will be evident on the
sheet.

Matachana M20 – B
According to EN 867 – 5.

20 test packs / box
for steam sterilization
sterilizing program: 134 °C - 137 °C until 3.5 min.

Batch control - TST Helix control-strip for steam sterilization

92-50010 The Browne TST Helix is a Hollow Load Process 1 set
Challenge Device (PCD) as defined in EN 867-5 and
has been developed and validated for testing of
small Type B steam sterilizers only. Use in any
other sterilizer or with any other type of indicator,
may give dangerously misleading results. A
successful test confirms steam penetration
through the helix and confirms by implication that
air and other non-condensable gases have been
removed.

1 TST PCD and 250 indicator strips / set
for steam sterilization

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