Note 5 - Accounts Receivable and Net Sales

9 Months Ended

Jun. 30, 2017

Notes to Financial Statements

Financing Receivables [Text Block]

Note

5.

Accounts Receivable and Net Sales

Credit is extended based on the evaluation of a customer’s financial condition and collateral is generally

not

required. Accounts that are outstanding longer than the contractual payment terms are considered past due. The Company writes off accounts receivable when they become uncollectible; payments subsequently received on such receivables are credited to the allowance for doubtful accounts. As of

June 30, 2017

and

September 30, 2016,

the balance in the allowance for doubtful accounts was

$79,085

and

$93,473,

respectively.

See Note

7,

“Major Customer Concentration” for further information regarding accounts receivable and net sales.