Note 7 - Major Customer Concentration

6 Months Ended

Mar. 31, 2018

Notes to Financial Statements

Concentration Risk Disclosure [Text Block]

Note

7.

Major Customer Concentration

The following table summarizes customers comprising

10%

or more of net sales for the

three

and

six

months ended

March 31, 2018

and

March 31, 2017:

	Three Months Ended March 31,						Six Months Ended March 31,
	2018			2017			2018			2017
Customer A		25	%		18	%		24	%		23	%
Customer B		16	%		15	%		14	%		15	%

As of

March 31, 2018,

Customers B and A accounted for

22%

and

13%

of accounts receivable, respectively. As of

September 30, 2017,

Customer B accounted for

19%

of accounts receivable. Customers A and B are both distributors.