Business Segments (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Net sales	$ 15,287,000	$ 11,101,000	$ 29,632,000	$ 21,149,000
Cost of sales	6,199,000	4,847,000	12,233,000	9,594,000
Gross profit	9,088,000	6,254,000	17,399,000	11,555,000
Operating expenses:
Sales and marketing	4,959,000	4,308,000	9,406,000	8,482,000
Research and development	942,000	1,069,000	1,861,000	2,237,000
General and administrative	6,874,000	7,932,000	15,709,000	16,263,000
Other	0	125,000	0	125,000
Operating expenses	12,775,000	13,434,000	26,976,000	27,107,000
Operating income (loss)	(3,687,000)	(7,180,000)	(9,577,000)	(15,552,000)
Total assets	41,992,000		41,992,000		$ 40,247,000
Consumer Products Segment [Member]
Net sales	11,720,000	8,744,000	22,864,000	16,198,000
Cost of sales	4,339,000	3,519,000	8,641,000	6,590,000
Gross profit	7,381,000	5,225,000	14,223,000	9,608,000
Operating expenses:
Sales and marketing	4,743,000	4,072,000	9,152,000	7,989,000
Research and development	805,000	875,000	1,587,000	1,844,000
General and administrative	0	0	0	0
Other				0
Operating expenses	5,548,000	4,947,000	10,739,000	9,833,000
Operating income (loss)	1,833,000	278,000	3,484,000	(225,000)
Total assets	14,392,000		14,392,000		12,137,000
Ingredients Segment [Member]
Net sales	2,850,000	1,387,000	5,325,000	2,881,000
Cost of sales	1,135,000	641,000	2,191,000	1,454,000
Gross profit	1,715,000	746,000	3,134,000	1,427,000
Operating expenses:
Sales and marketing	76,000	79,000	8,000	191,000
Research and development	137,000	194,000	274,000	393,000
General and administrative	0		0	0
Other		0		0
Operating expenses	213,000	273,000	266,000	584,000
Operating income (loss)	1,502,000	473,000	2,868,000	843,000
Total assets	2,280,000		2,280,000		2,135,000
Analytical Reference Standards and Services Segment [Member]
Net sales	717,000	970,000	1,443,000	2,070,000
Cost of sales	725,000	687,000	1,401,000	1,550,000
Gross profit	(8,000)	283,000	42,000	520,000
Operating expenses:
Sales and marketing	140,000	157,000	262,000	302,000
Research and development	0	0	0	0
General and administrative	0	0	0	0
Other				0
Operating expenses	140,000	157,000	262,000	302,000
Operating income (loss)	(148,000)	126,000	(220,000)	218,000
Total assets	950,000		950,000		918,000
Corporate and Other Segment [Member]
Net sales	0	0	0	0
Cost of sales	0		0	0
Gross profit	0	0	0	0
Operating expenses:
Sales and marketing	0	0	0	0
Research and development	0	0	0	0
General and administrative	6,874,000	7,932,000	15,709,000	16,263,000
Other		125,000		125,000
Operating expenses	6,874,000	8,057,000	15,709,000	16,388,000
Operating income (loss)	(6,874,000)	$ (8,057,000)	(15,709,000)	$ (16,388,000)
Total assets	$ 24,370,000		$ 24,370,000		$ 25,057,000