Microsaic Regulatory News (MSYS)

Microsaic Systems plc

 ("Microsaic" or the "Company")

APPOINTMENT OF SAMANTHA DUNNAGE TO LEAD DIRECT PRODUCT SALES

8 August 2011: Microsaic Systems plc (AIM: MSYS), the developer of chip-based scientific instruments, today announces that Samantha Dunnage has joined to lead the Company's marketing and direct sales. Samantha joins Microsaic Systems from Uniqsis Ltd where she successfully launched and grew sales of innovative solutions to customers from the pharmaceutical industry across the USA and Europe.

Microsaic is the first and only company to have successfully miniaturised mass spectrometry ("MS") through the development of its patented chip-based technologies (ionchip®, spraychip® and vac-chip®). The Company's first product, the Microsaic 3500 MiD®, was launched in January 2011. It is a desktop MS system that is smaller, lighter, more energy efficient and cheaper to run than legacy conventional MS systems.

Mass spectrometry is widely accepted as a 'gold-standard' method for identifying chemicals. As a result, this technique is used routinely by chemists across a range of sectors including government, energy, utilities, pharmaceuticals, environmental, food and drink, healthcare and industrial chemicals.

Commenting on today's appointment, Alan Finlay, Chief Executive of Microsaic Systems plc, said:

"We are delighted to welcome Samantha to the team. These past months have seen Microsaic Systems make good commercial and technical progress including successful product demonstrations to end-users from a broad range of markets, a growing number of engagements with sales channels and OEM partners and a resounding reception for our products and technology at ASMS 2011, the premier trade fair for our industry. In her role, Samantha will be capitalising on the interest generated so far to accelerate product introduction."

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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