RS ISO 6060: 1989 WATER QUALITY — DETERMINATION OF THE CHEMICAL OXYGEN DEMAND
6,000.00
15
90,000.00
2
Rwanda Standards
RS ASTM F 2101: 2019 STANDARD TEST METHOD FOR EVALUATING THE BACTERIAL FILTRATION EFFICIENCY (BFE) OF MEDICAL FACE MASK MATERIALS, USING A BIOLOGICAL AEROSOL OF STAPHYLOCOCCUS AUREUS