5. Inventories

6 Months Ended

Dec. 31, 2018

Inventory Disclosure [Abstract]

Inventories

Inventories are valued at the lower of cost (determined on a first-in, first-out basis) or net realizable value, and have been reduced by an allowance for excess and obsolete inventories. The estimate is based on managements review of inventories on hand compared to estimated future usage and sales. Cost of work-in-process and finished goods inventories include material, labor, and manufacturing overhead.

	December 31, 2018		June 30, 2018
Raw materials	$	1,554,000	$	1,488,000
Work-in-process		555,300		352,700
Finished goods		614,600		427,200
	$	2,723,900	$	2,267,900