Eschmann Sterilizer User manual

Autoclave Testing

Much emphasis is placed on the importance
of autoclave testing. This is because routine
performance tests are the most reliable way
of ensuring an autoclave is functioning
correctly.

The requirements for autoclave testing are
identified in a number of documents
published by the Medicines and Healthcare
Products Regulatory Agency (MHRA), along
with Healthcare Technical Memoranda
(HTM) 2010. Not all establishments,
however, are required to follow this regime.
If you are in doubt or need guidance on
which guidelines you should follow please
refer to your local Infection Control Nurse,
their details will be available from the
Primary Care Trust for your area.

All autoclave testing is periodic. Simple
tests are performed on a daily basis, whilst
more sophisticated tests are conducted on a
quarterly, half yearly or annual basis.
Responsibility for testing will be shared
between the ‘User’ and a designated ‘Test
Person’ (TP). The definition of these two
individuals may be found on Autoclave
Advice Sheet 7. All testing should be
preceded by a safety check to ensure the
autoclave is both safe for use and for
testing.

All test results should be recorded and
retained in accordance with your local
Primary Care Trust protocols.

Daily Tests

These are performed by the ‘User’ and
consist of the following:

Automatic Control Test (ACT)

It is recommended this is carried out at the
start of the day or before the autoclave is
used for the first time that day.

Some autoclaves may require a warm up
cycle prior to performing daily tests. Please
check your autoclave’s Instructions for Use

Number 5

to establish if a warm up cycle is
required. ‘Little Sister’ and ‘SES’
autoclaves do not require a warm up
cycle.

To perform the test the autoclave should
be empty and the most frequently used
cycle selected (e.g. 134°C, unwrapped
without drying), or a test cycle if the
autoclave is programmed with this
feature. If the unit has a printer installed,
the print out of the test cycle should be
retained and recorded in a daily logbook
for that autoclave.

A sample logbook may be downloaded
from the Eschmann website.

www.eschmann.co.uk

If the autoclave does not have a printer, the
following information must be observed and
recorded manually.

• Cycle Time

• Sterilization ‘hold time’ (i.e. the

length of time temperature is held at
either 134°C or 121°C during the
cycle)

• Temperature

• Pressure

Manual recording of test results can be time
consuming. The use of a printer is highly
recommended, as it provides the dual
benefits of saving time and is assured of
accurately recording the test results.

In addition to these tests, users of vacuum
autoclaves should perform a daily steam
penetration test. The purpose of the steam
penetration test is to ensure sufficient steam
is produced in order to penetrate complex
loads (e.g. multi-wrapped items or
materials). The most frequently used test
method is a ‘Bowie & Dick’ Type. It is
possible with some autoclaves to conduct
both the steam penetration test and the
automatic control test on the same cycle,
please refer to the instructions for use
supplied with the autoclave.

Note: Only use the steam penetration
test designed for use with the autoclave
you are using – Steam penetration test
packs are not universal and use of the
incorrect one may provide inaccurate
and misleading results.

Weekly Tests

Weekly tests may be performed by the
‘User’ provided adequate training has been
conducted and agreed by the Authorised
Person otherwise testing must be performed
by the Test Person.

The weekly test consists of the following
safety checks:

• Examine the door seal for signs
of deterioration and leaks.

• Check the security and
performance of the door safety
devices.

• Air leakage test (automatic)

This test is intended to check that air will
not leak into the sterilizer during periods
of vacuum, at a rate greater than
specified by the manufacturer. Most
autoclaves should be fitted with
automatic leak detection function test,
and this should indicated within the
Instructions for Use.

Quarterly & Annual Testing

Should only be performed by a qualified
Test Person (TP). The Test Person (TP)
may be a suitably qualified service
engineer, and tests may be performed as
part of a service agreement. Any service
agreement should clearly identify
whether this routine testing is included as
part of the contact and whether the
person performing the test is sufficiently
qualified.

SES Little Sister Benchtop Autoclave

Advice Sheets

No 1 The Decontamination Cycle

No 2 Pre-sterilization Cleaning & Disinfection

No 3 Selecting A New Autoclave

No 4 Best Practice in Use of Benchtop Autoclaves

No 5 Autoclave Testing

No 6 Health Technical Memoranda

No 7 Frequently used terms

For copies of the above please contact

Eschmann Customer Service Tel: [phone]

The Eschmann name & logo are registered trade marks of Eschmann Holdings Ltd.
“Little Sister” is a trade mark of Eschmann Holdings Ltd. PS 261 Dec 2004