FOR IMMEDIATE RELEASE

July 20, 2005.

Manufactured from ultra-pure grade polypropylene, the new 24-well Deep-well plate from Porvair Sciences Ltd. has near zero leachates making it an ideal long-term sample storage medium.

High-volume Sample Storage microplate …

Manufactured from ultra-pure grade polypropylene, the new 24-well Deep-well plate from Porvair Sciences Ltd. (www.porvair-sciences.com) has near zero leachates making it an ideal long-term sample storage medium. Offering 10ml volume per well, permits users to also use the plate to simply reproduce a large variety of environmental analyses in a single unit maximising operational flexibility.

Adopting a standard microplate footprint this high-volume Deep-well plate offers the productivity advantages of ready compatibility with robotic and automated liquid handling systems. To enable easy sampling access whilst maintaining sample integrity the new plate may be securely sealed with a Santaprene™ piercable seal. The new plates are also easily stackable economising valuable freezer storage space.

Established in 1987, Porvair Sciences Ltd. expertise is in microplate technology and manufacturing covers the scientific fields of Drug Discovery, Combinatorial Chemistry, Solid Phase Extraction, Protein Purification, High Throughput Screening, Environmental Analysis, Proteomics and Genomics.

Porvair Sciences Ltd. is a wholly owned subsidiary of Porvair plc.

CONTACTS:

Porvair Sciences Ltd. Unit 6, Shepperton Business Park Govett Avenue Shepperton Middlesex TW17 8BA UK tel. +44-1932-240255 email: int.sales@porvair.com www.porvair-sciences.com