EXHIBIT 11 ABATIX ENVIRONMENTAL CORP. AND SUBSIDIARY Computation of Re Per Share Earnings Three Months Ended Nine Months Ended September30, September 30, ------------------------------ ------------------------------ 1996 1995 1996 1995 -------------- -------------- -------------- -------------- Average shares outstanding: Primary: Common shares outstanding, beginning of period 2,091,464 2,319,748 2,159,214 2,319,748 Weighted average number of shares issued 1,806 21,566 9,991 17,147 Weighted average number of shares acquired (25,382) (173,389) (74,367) (148,741) Dilutive stock options and warrants, based on the treasury stock method using average market prices 29,726 40,515 41,210 27,922 -------------- -------------- -------------- -------------- Total 2,097,614 2,208,440 2,136,048 2,216,076 ============== ============== ============== ============== Fully Diluted: Common shares outstanding, beginning of period 2,091,464 2,319,748 2,159,214 2,319,748 Weighted average number of shares issued 1,806 21,566 9,991 17,147 Weighted average number of shares acquired - (173,389) (74,367) (148,741) Dilutive stock options and warrants, based on the treasury stock method using the market price at the end of the period if higher than the average market price 29,726 46,000 41,210 58,312 ------------- ------------- ------------- ------------- Total 2,097,614 2,213,925 2,136,048 2,246,466 ============= ============= ============= ============= Earnings: Earnings from continuing operations $ 224,375 $ 190,222 $ 703,624 $ 666,584 Earnings from discontinued operations - - 21,545 - ------------- -------------- ------------- ------------- Net earnings $ 224,375 $ 190,222 $ 725,169 $ 666,584 ============= ============== ============== ============= Primary earnings per common and common equivalent share: Earnings from continuing operations $ .11 $ .09 $ .33 $ .30 Earnings from discontinued operations - - .01 - -------------- -------------- ------------- ------------- Net earnings $ .11 $ .09 $ .34 $ .30 ============== ============== ============= ============= Fully diluted earnings per common and common equivalent share: Earnings from continuing operations $ .11 $ .09 $ .33 $ .30 Earnings from discontinued operations - - .01 - -------------- -------------- ------------- ------------- Net earnings $ .11 $ .09 $ .34 $ .30 ============== ============== ============= =============