1.1 These test methods cover procedures to be followed for qualifying papers to be used in the manufacture of vacuum cleaner bags and filters. The filtration efficiency of the paper is not evaluated with the use of these test methods.

1.2 The procedures appear in the following sections:

Procedure	Sections
Air Permeability (Test Method D 737)	3-5
Basis Weight (Test Method D 646)	6-8
Bursting Strength (Mullen Test) (Test Method D 774)	9-11
Internal Tearing Resistance (Test Method D 689)	12-14
Tensile Breaking Strength (Test Method D 828)	15-17

1.3 The values stated in inch-pound units are to be regarded as the standard.

1.4This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.