Exhibit 99.4

Fisher Scientific International Inc.

Computation of Ratio of Earnings to Fixed Charges

		Year Ended December 31,
		2004		2003		2002		2001		2000
		(In millions, except ratio amounts)
Pre-tax income from continuing operations before adjustment for loss from equity investees		$	186.6	$	94.9	$	142.6	$	36.3	$	38.8
Fixed Charges:
Interest expense and amortization of debt discount and premium on all indebtedness		$	104.8	$	84.8	$	91.3	$	99.5	$	99.1
20% of rental expense			7.4		4.7		4.6		4.1		3.5
	Total fixed charges	$	112.2	$	89.5	$	95.9	$	103.6	$	102.6
Pre-tax income from continuing operations before adjustment for loss from equity investees plus fixed charges		$	298.8	$	184.4	$	238.5	$	139.9	$	141.4
Ratio of Earnings to Fixed Charges(A)			2.66		2.06		2.49		1.35		1.38

(A)  For the purpose of computing the ratio of earnings to fixed charges, earnings consist of income from continuing operations before provision for income taxes and before adjustment for loss from equity investees plus fixed charges. Fixed charges consist of interest charges, amortization of debt discount or premium related to indebtedness, whether expensed or capitalized, and that portion of rental expense we believe to be representative of interest.