Significant Accounting Policies (Tables)

12 Months Ended

Dec. 30, 2017

Accounting Policies [Abstract]

Shipping and handling fees

	2017		2016		2015
Shipping and handling fees billed	$	137,000	$	110,000	$	113,000
Cost of shipping and handling fees billed	$	185,000	$	108,000	$	112,000

Doubtful receivables

	2017		2016
Allowances Related to
Customer C	$	500,000	$	800,000
Customer E		-		198,000
Other Allowances		169,000		83,000
	$	669,000	$	1,081,000

Inventories

	2017		2016
Bulk ingredients	$	4,159,000	$	7,044,000
Reference standards		1,027,000		1,033,000
Consumer Products - Finished Goods		503,000		-
Consumer Products - Work in Process		249,000		-
		5,938,000		8,077,000
Less valuation allowance		142,000		164,000
	$	5,796,000	$	7,913,000