1. Summary of Significant Accounting Policies (Tables)

12 Months Ended

Jun. 30, 2020

Accounting Policies [Abstract]

Disaggregation of revenues

	Benchtop  Laboratory  Equipment		Catalyst  Research  Instruments		Bioprocessing  Systems		Corporate  and  Other		Consolidated
June 30, 2020:
Revenues	$	6,783,600	$	785,900	$	1,000,800	$	-	$	8,570,300
Foreign Sales		2,589,800		586,500		1,000,400		-		4,176,700

	Benchtop  Laboratory  Equipment		Catalyst  Research  Instruments		Bioprocessing  Systems		Corporate  and  Other		Consolidated
June 30, 2019:
Revenues	$	7,078,800	$	1,814,900	$	1,306,100	$	-	$	10,199,800
Foreign Sales		2,680,300		1,102,300		1,301,200		-		5,083,800