2. Segment Information and Concentrations (Details) - USD ($)	3 Months Ended		9 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Depreciation and Amortization			$ 230,100	$ 276,500
Benchtop Laboratory Equipment [Member]
Revenues	$ 1,550,700	$ 1,410,800	4,436,300	4,334,400
Foreign Sales	620,200	611,400	1,937,800	1,924,400
Income (Loss) from Operations	78,200	88,900	106,300	252,900
Assets	3,930,600	4,170,900	3,930,600	4,170,900
Long-lived Asset Expenditures	4,500	4,600	69,700	18,200
Depreciation and Amortization	67,400	73,500	199,300	226,900
Catalyst Research Instruments [Member]
Revenues	110,700	359,800	293,000	1,629,400
Foreign Sales	105,400	37,100	114,400	52,200
Income (Loss) from Operations	(74,400)	(82,400)	(361,900)	(197,400)
Assets	1,680,800	1,822,200	1,680,800	1,822,200
Long-lived Asset Expenditures	0	0	1,900	0
Depreciation and Amortization	(800)	1,600	2,700	12,600
Bioprocessing Systems [Member]
Revenues	437,900	140,300	543,300	190,000
Foreign Sales	0	0	0	0
Income (Loss) from Operations	(87,700)	76,500	(124,900)	9,100
Assets	893,300	485,700	893,300	485,700
Long-lived Asset Expenditures	0	7,000	2,500	12,800
Depreciation and Amortization	9,400	12,000	28,100	37,000
Corporate and Other [Member]
Revenues	0	0	0	0
Foreign Sales	0	0	0	0
Income (Loss) from Operations	0	0	0	0
Assets	853,600	719,200	853,600	719,200
Long-lived Asset Expenditures	0	0	0	0
Depreciation and Amortization	0	0	0	0
Consolidated [Member]
Revenues	2,099,300	1,910,900	5,272,600	6,153,800
Foreign Sales	725,600	648,500	2,052,200	1,976,600
Income (Loss) from Operations	(83,900)	83,000	(380,500)	64,600
Assets	7,358,300	7,198,000	7,358,300	7,198,000
Long-lived Asset Expenditures	4,500	11,600	74,100	31,000
Depreciation and Amortization	$ 76,000	$ 87,100	$ 230,100	$ 276,500