RS ASTM F 2299: 2017 STANDARD TEST METHOD FOR DETERMINING THE INITIAL EFFICIENCY OF MATERIALS USED IN MEDICAL FACE MASKS TO PENETRATION BY PARTICULATES USING LATEX SPHERES1
10,500.00
76
798,000.00
2
Rwanda Standards
RS ISO 1833-1: 2020 TEXTILES — QUANTITATIVE CHEMICAL ANALYSIS —
PART 1: GENERAL PRINCIPLES OF TESTING