Microtitre plate sized petridishes?

[(Dave Johnston)]

Does anyone know of a source of microtitre plate sized, rectangular 
petridishes? I want to replica plate from liquid cultures in 96 well plates 
onto agar without wasting agar and antibiotics.

Thanks
DAJ

David A. Johnston
Research Fellow,
Dept of Zoology, The Natural History Museum, Cromwell Road,
South Kensington, London SW7 5DB. England
(tel 071 9389297, fax 071 9388754, email daj at nhm.ac.uk)