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Factories Act, 1948 Schedule II

Title: The Second Schedule

State: Central

Year: 1948

..... 2 mg/m3 , respirable dust fraction containing less than 5% quartz mppcm Million particles per cubic metre of air based on impinger samples counted by light-field techniques. *As determined by the membrane-liter method at 400--450 x megnification (4 mm objective) phase contrast illumination. Respirable Dust: Fraction passing a size-selector with the following characteristics: Aerodynamic Diameter (u.m.) % passing sector (Unit density sphere) < 2 90 2.5 75 3.5 50 5.0 25 10 0] ____________________ 1.Substituted by S.O. 170 (E), dated 2nd March, 1989. 2.Substituted by S.O. 342 (E), dated 19th April, 2001 (w.e.f. 19-4-2001). 3.Lint-free dust as measured by the vertical clutricator cotton-dust sampler.

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