Inventories

3 Months Ended

Oct. 31, 2011

Notes to Financial Statements

Inventories

(7) Inventories

Inventories are valued at the lower of cost or market, with costs determined by the first-in, first-out method. Inventories at October 31, 2011 and April 30, 2011 consist of the following categories:

	October 31, 2011		April 30, 2011
Raw materials	$	2,339,000	$	3,229,000
Work in process		8,000		36,000
Finished goods		2,261,000		2,197,000
	$	4,608,000	$	5,462,000