Microsaic Regulatory News (MSYS)

Microsaic Systems plc

("Microsaic" or the "Company")

BOARD APPOINTMENTS

25 May 2011: Microsaic Systems plc (AIM: MSYS), the developer of miniaturised chip-based scientific instruments, is delighted to announce the appointment of Malcolm Bateman and Peter Edwards as Directors of the Company with effect from 1 June 2011.

Malcolm Bateman (44), appointed as Finance Director, initially joined the Company as Financial Controller in 2006. Mr Bateman is a graduate in chemistry from Cambridge University and is a Chartered Accountant. Prior to joining the Company, Malcolm served in various senior executive roles with RMC Group plc (later acquired by CEMEX) for over 10 years. Prior to joining RMC Group, Mr Bateman spent six years with the audit practice of Touche Ross & Co., London.

Peter Edwards (54), appointed as Technical Director, first joined the Company as Head of Research and Development in 2007. Mr Edwards, a Chartered Engineer, was awarded a BSc degree in Engineering at Kingston Polytechnic, and between 1987 and 2007 served in senior positions with Applied Materials Inc. Between 2001 and 2005 he served as Engineering Director and was responsible for development of Applied Material's ion implanter products, before finally serving as Key Product Unit Director.

Commenting on the appointments, Alan Finlay, chief executive of Microsaic Systems plc, said:

"We are delighted to have appointed Malcolm Bateman and Peter Edwards to our Board of Directors. Both have been instrumental in helping to establish and build our business over the last few years and I have no doubt that through their experience and knowledge they will add considerable value to the Board."

The following disclosures are required regarding Peter Edwards' appointment pursuant to Schedule 2 paragraph (g) of the AIM Rules for Companies:

There are no further disclosures required to be made in respect of these appointments under Schedule 2(g) of the AIM Rules for Companies.

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About Microsaic Systems

Microsaic Systems develops micro-engineered scientific instruments for the identification of chemicals in liquids, gases and solids. Microsaic's technologies are based on the gold-standard technique of mass spectrometry (MS), which is currently based on large and expensive systems.

Microsaic is the first and only company to have successfully miniaturised MS onto patented chip-based technologies (ionchip®, spraychip® and vac-chip®) to create instruments that retain the speed and sensitivity of MS but are smaller, lighter, more energy efficient and cheaper to run than conventional MS systems.

MS technology is used across multiple sectors, including government, energy, utilities, pharmaceutical, diagnostics and healthcare, environmental, food and drink, security and defence, and industrial chemicals - a combined market of $3.3 billion in 2010.

Microsaic Systems was established in 2001 by a team including founders from Imperial College London and was admitted to AIM in April 2011 under the ticker MSYS.

www.microsaic.com