Summary of significant accounting policies (Tables)

6 Months Ended

Jun. 30, 2017

Accounting Policies [Abstract]

Schedule of Inventories

Inventories are valued using the first-in, first-out method and stated at the lower of cost or market and consist of the following: 

	June 30, 2017		December 31, 2016
Raw materials and supplies	$	329,904	$	479,479
Work-in process		48,185		27,422
Finished goods		200,814		185,467
Total	$	578,903	$	692,368

Schedule of Finite-Lived Intangible Assets

Finite-lived intangible assets include trademarks, developed technology and customer relationships and consisted of the following as of June 30, 2017 and December 31, 2016

			June 30, 2017					December 31, 2016
	Cost		Accumulated Amortization			Net Balance		Accumulated Amortization			Net Balance
Trademarks and trade names	$	461,000	$	(90,627	)	$	370,373	$	(67,575	)	$	393,425
Developed technology		458,000		(128,610	)		329,390		(95,898	)		362,102
Customer relationships		1,094,000		(306,673	)		787,327		(228,529	)		865,471
	$	2,013,000	$	(525,910	)	$	1,487,090	$	(392,002	)	$	1,620,998