Amortizable intangible assets -Amounts related to intangible assets (Details) (USD $)	Sep. 30, 2013
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	$ 1,023,227
Finite-Lived Intangible Assets, Accumulated Amortization	118,622
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	411,181
Finite-Lived Intangible Assets, Accumulated Amortization	33,516
Product Certification [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	372,046
Finite-Lived Intangible Assets, Accumulated Amortization	76,135
Developed Technology Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	240,000
Finite-Lived Intangible Assets, Accumulated Amortization	$ 8,971