RS ASTM C 1777-20 STANDARD TEST METHOD FOR RAPID DETERMINATION OF THE METHYLENE BLUE VALUE FOR FINE
AGGREGATE OR MINERAL FILLER USING A COLORIMETER1
6,000.00
74
444,000.00
2
Rwanda Standards
RS ISO 16890-1: 2016 AIR FILTERS FOR GENERAL VENTILATION — PART 1: TECHNICAL SPECIFICATIONS, REQUIREMENTS AND CLASSIFICATION SYSTEM BASED UPON PARTICULATE MATTER EFFICIENCY (EPM)