EXHIBIT 11 ABATIX ENVIRONMENTAL CORP. AND SUBSIDIARY Computation Re Per Share Earnings Three months ended September 30, Nine months ended September 30, ----------------------------- ------------------------------- 1997 1996 1997 1996 ------------- ------------- -------------- -------------- Average shares outstanding: Primary: Common shares outstanding, beginning of period 1,910,064 2,091,464 1,988,564 2,159,214 Weighted average number of shares issued - 1,806 - 9,991 Weighted average number of shares acquired (4,000) (25,382) (45,177) (74,367) Dilutive stock options and warrants, based on the treasury stock method using average market prices - 29,726 - 41,210 ------------- ------------- -------------- -------------- Total 1,906,064 2,097,614 1,943,387 2,136,048 ============= ============= ============== ============== Fully Diluted: Common shares outstanding, beginning of period 1,910,064 2,091,464 1,988,564 2,159,214 Weighted average number of shares issued - 1,806 - 9,991 Weighted average number of shares acquired (4,000) (25,382) (45,177) (74,367) 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 prices - 29,726 - 41,210 ------------- ------------- -------------- -------------- Total 1,906,064 2,097,614 1,943,387 2,136,048 ============= ============= ============== ============== Earnings: Earnings from continuing operations $ 232,244 $ 224,375 $ 586,442 $ 703,624 Earnings from discontinued operations - - - 21,545 ------------- ------------- -------------- -------------- Net earnings $ 232,244 $ 224,375 $ 586,442 $ 725,169 ============= ============= ============== ============== Primary earnings per common and common equivalent share: Earnings from continuing operations $ .12 $ .11 $ .30 $ .33 Earnings from discontinued operations - - - .01 ------------- ------------- -------------- -------------- Net earnings $ .12 $ .11 $ .30 $ .34 ============= ============= ============== ============== Fully diluted earnings per common and common equivalent share: Earnings from continuing operations $ .12 $ .11 $ .30 $ .33 Earnings from discontinued operations - - - .01 ------------- ------------- -------------- -------------- Net earnings $ .12 $ .11 $ .30 $ .34 ============= ============= ============== ==============