3. Segment Information and Concentrations (Details) - USD ($)	3 Months Ended		6 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Revenues	$ 2,163,200	$ 1,892,400	$ 4,201,800	$ 3,173,300
Depreciation and Amortization	76,000	77,000	151,900	154,100
Benchtop Laboratory Equipment [Member]
Revenues	1,803,100	1,686,200	3,495,100	2,885,600
Foreign Sales	743,600	815,300	1,379,300	1,317,600
Income (Loss) from Operations	148,600	122,000	324,200	28,100
Assets	4,762,000	4,085,800	4,762,000	4,085,800
Long-lived Asset Expenditures	10,800	33,000	13,000	65,200
Depreciation and Amortization	66,400	67,000	132,700	131,900
Catalyst Research Instruments [Member]
Revenues	227,200	153,500	444,600	182,300
Foreign Sales	222,900	2,600	365,200	9,000
Income (Loss) from Operations	(48,300)	(103,400)	(111,300)	(287,500)
Assets	1,376,100	1,613,200	1,376,100	1,613,200
Long-lived Asset Expenditures	1,200	1,900	1,200	1,900
Depreciation and Amortization	200	700	400	3,500
Bioprocessing Systems [Member]
Revenues	132,900	52,700	262,100	105,400
Foreign Sales	0	0	0	0
Income (Loss) from Operations	55,700	(8,300)	118,900	(37,100)
Assets	727,300	467,900	727,300	467,900
Long-lived Asset Expenditures	0	2,500	0	2,500
Depreciation and Amortization	9,400	9,300	18,800	18,700
Corporate and Other [Member]
Revenues	0	0	0	0
Foreign Sales	0	0	0	0
Income (Loss) from Operations	0	0	0	0
Assets	693,300	803,300	693,300	803,300
Long-lived Asset Expenditures	0	0	0	0
Depreciation and Amortization	0	0	0	0
Consolidated [Member]
Revenues	2,163,200	1,892,400	4,201,800	3,173,300
Foreign Sales	966,500	817,900	1,744,500	1,326,600
Income (Loss) from Operations	156,000	10,300	331,800	(296,500)
Assets	7,558,700	6,970,200	7,558,700	6,970,200
Long-lived Asset Expenditures	12,000	37,400	14,200	69,600
Depreciation and Amortization	$ 76,000	$ 77,000	$ 151,900	$ 154,100