Board Appointment

Tristel PLC
03 April 2008



                                  Tristel plc
                          ('Tristel' or 'the Company')


                               Board Appointment



Tristel plc, the AIM listed provider of infection and contamination control
products, announces the appointment of Mr Bruce Green as a non-executive
director to the Board with immediate effect.

Mr Green, aged 63, has acted as a consultant to Tristel since the incorporation
of the Company in 1993.  He is the original inventor/pioneer of Tristel's
proprietary chlorine dioxide technology and signed over the patents to Tristel
at its admission to AIM in June 2005.

Mr Green is currently interested in 864,016 Ordinary 1p Shares, representing 3.2
per cent. of the Company' issued share capital.

Mr Green is a Chartered Scientist, a Chartered Chemist and a member of the Royal
Society of Chemistry. For the last 25 years Mr Green has acted as an independent
consultant and formulator in the infection control, cosmetics and food hygiene
industries.

Pursuant to Rule 17, Schedule Two (g) of the AIM Rules for Companies the
following information is disclosed:


Current Appointments

Bruce Green Limited
Food Safe Sales Limited
Food Safe Limited (dormant)
Floraceuticals Limited (dormant)
Toby Brown Limited (dormant)
Browns Cosmetics Limited (dormant)
Browns Haircare Limited (dormant)


Previous Appointments

Hairology Limited
Claremont & May of Canterbury Limited
Boxercise Limited
Rugby Polo Club Limited
Manufacturing Packaging Services Limited
Health and Hygiene International Limited
Formulas To Go Limited
First Rung Housing
Aqua Safe Technology Limited
The Real Soil Associates Limited


Mr Green was a Director of Janda Chemicals Limited at the time of its
liquidation, following the non payment of monies due from a creditor to Janda
Chemicals Limited.


There is no further information to disclose.


Tristel plc
Paul Swinney, Chief Executive                     Tel: [phone]

Daniel Stewart & Company Plc
Graham Webster                                    Tel: [phone]

Parkgreen Communications Ltd                      Tel: [phone]
Lucy Lake                                         Mob: [phone]
                                                  [e-mail]



Notes to Editors


Tristel's core business is the marketing of its proprietary chlorine dioxide
chemistry that is highly effective in destroying all types of bacteria
(including C difficile, MRSA, bacterial spores, and tuberculosis), fungi and
viruses and is one of a small group of sporicidal agents that is safe and easy
to use.

Tristel plc operates with two divisions, Tristel Solutions and Tristel
Technologies.

Tristel Solutions focuses on infection control products for NHS and private
sector hospitals, primary care trusts, community hospitals, private practices,
dental practices and veterinary establishments. The Company's products are used
on instruments, surfaces, and the skin in over 375 UK hospitals, representing
some 60 per cent of all UK NHS Acute & Private Hospitals.

Tristel Technologies provides products for Legionella infection control in
building water systems and for contamination control in the food growing and
food processing industries. Tristel Technologies has approximately 200 customers
in the government, municipal, industrial, healthcare and food sectors and more
40 UK hospitals where its products are used for Legionella control.



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