CANTEL INDUSTRIES, INC. Computation of Earnings per Share Exhibit 11 Year Ended July 31, ---------------------------------- PRIMARY 1996 1995 1994 ---------- ---------- ---------- Weighted average number of shares outstanding 3,789,777 3,739,396 3,426,489 Dilutive effect of options and warrants using the treasury stock method and average market price for the period 518,802 - 418,629 ---------- ---------- ---------- Weighted average number of shares and common stock equivalents assuming no redemption or conversion of preferred stock 4,308,579 3,739,396 3,845,118 ========= ========= ========= Income (loss) from continuing operations before extraordinary gain and dividends on preferred stock $ 422,000 $ (793,000) $ (61,000) Dividends on preferred stock - - (314,000) ---------- ---------- ---------- Income (loss) from continuing operations before extraordinary gain assuming no redemption or conversion of preferred stock 422,000 (793,000) (375,000) Discontinued operations - - 562,000 Extraordinary gain on extinguishment of debt - - 1,211,000 ---------- ---------- ---------- Net income (loss) attributable to common stock $ 422,000 $ (793,000) $1,398,000 ========== =========== ========== Primary earnings per share assuming no conversion or redemption of preferred stock: Continuing operations $0.10 $(0.21) $(0.10) Discontinued operations - - 0.15 Extraordinary gain on extinguishment of debt - - 0.31 ----- ------ ------ Net income (loss) $0.10 $(0.21) $ 0.36 ===== ====== ====== CANTEL INDUSTRIES, INC. Computation of Earnings per Share Exhibit 11 Year Ended July 31, ------------------------------- FULLY DILUTED 1996 1995 1994 --------- --------- ------- Weighted average number of shares outstanding 3,789,777 3,739,396 3,426,489 Dilutive effect of options and warrants using the treasury stock method and the higher of the period-end or average market price for the period 518,802 - 462,261 --------- --------- --------- Weighted average number of shares and common stock equivalents assuming no redemption or conversion of preferred stock 4,308,579 3,739,396 3,888,750 ========= ========= ========= Income (loss) from continuing operations before extraordinary gain and dividends on preferred stock $ 422,000 $ (793,000) $ (61,000) Dividends on preferred stock - - (314,000) ---------- ---------- ---------- Income (loss) from continuing operations before extraordinary gain assuming no redemption or conversion of preferred stock 422,000 (793,000) (375,000) Discontinued operations - - 562,000 Extraordinary gain on extinguishment of debt - - 1,211,000 ---------- --------- --------- Net income (loss) attributable to common stock $ 422,000 $ (793,000) $1,398,000 ========== ========== ========== Fully diluted earnings per share assuming no redemption or conversion of preferred stock: Continuing operations $0.10 $(0.21) $(0.10) Discontinued operations - - 0.15 Extraordinary gain on extinguishment of debt - - 0.31 ----- ----- ------ Net income (loss) $0.10 $(0.21) $ 0.36 ===== ====== ======