1. Summary of Significant Accounting Policies (Details) - USD ($)	12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Revenues	$ 8,570,300	$ 10,199,800
Benchtop Laboratory Equipment
Revenues	6,783,600	7,078,800
Foreign sales	2,589,800	2,680,300
Catalyst Research Instruments
Revenues	785,900	1,814,900
Foreign sales	586,500	1,102,300
Bioprocessing Systems
Revenues	1,000,800	1,306,100
Foreign sales	1,000,400	1,301,200
Corporate and Other
Revenues	0	0
Foreign sales	0	0
Consolidated
Revenues	8,570,300	10,199,800
Foreign sales	$ 4,176,700	$ 5,083,800