Microsaic Regulatory News (MSYS)

Microsaic Systems plc

("Microsaic" or the "Company")

Distribution of Annual Report and Accounts

21 June 2011: Microsaic Systems plc (AIM: MSYS), the developer of miniaturised chip-based scientific instruments, announces that its Report and Accounts for the seven months ended 31 December 2010 have been posted to all shareholders. Copies are available on the Company's website (www.microsaic.com).

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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