Inventories (Tables)

3 Months Ended

Jul. 31, 2014

Inventory Disclosure [Abstract]

Inventories

	July 31, 2014		April 30, 2014
Raw materials	$	1,007,359	$	1,576,238
Work in process		80,052		63,631
Finished goods		933,341		651,169
	$	2,020,752	$	2,291,038