HELSINKI, FINLAND–(EMWNews – July 24, 2008) –

Boulder/Helsinki, July 24, 2008 – Vaisala, a global leader in

environmental and industrial measurement, has been selected by the

Cleantech Group™, LLC to join its prestigious Cleantech Index

(CTIUS) of public clean technology companies. CTIUS is a stock market

index intended to reflect the surging global demand for cleantech

products and services.

Cleantech products are defined as knowledge-based products and

services that add economic value by reducing cost, raising

productivity and/or product performance while reducing resource

consumption and their negative impact on the environment and public

health. The Cleantech Index is comprised of stocks of publicly traded

companies worldwide that are leaders in cleantech innovation and

commercial deployment across a broad range of industry sectors: from

alternative energy and energy efficiency to advanced materials, clean

air & water, ecofriendly agriculture/nutrition, clean manufacturing,

and more.

Only 76 companies globally have qualified for the Index so far, of

them approximately half are non-US based. Vaisala now joins this

elite group that must meet 18 screening criteria just to be

shortlisted for selection – including profitability, growth,

environmental impact, industry leadership, intellectual property,

strategy, management quality, liquidity, and more.

There are several investment funds that track the Cleantech Index,

such the PowerShares Cleantech ETF (PZD) and the KSM Cleantech ETF in

Israel (KSMCTIUS).

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Further information:

Helena Marjaranta, Communications Director, tel. +358 9 8949 2832,

helena.marjaranta (a) vaisala.com (Helsinki, Finland)

Cleantech Index: http://www.cleantechindex.com/

Vaisala is a global leader in environmental and industrial

measurement, providing services, products and solutions for

meteorology, environmental sciences, aviation, traffic and industry.

Built on science-based innovation, advanced technology and over 70

years of experience, Vaisala is committed to providing a better

quality of life through environmental measurement. Headquartered in

Finland, Vaisala employs over 1100 professionals and is listed on the

Nordic Exchange, Helsinki. www.vaisala.com

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