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
30
180,000.00
2
Rwanda Standards
RS ISO 20481: 2008 COFFEE AND COFFEE PRODUCTS — DETERMINATION OF THE CAFFEINE CONTENT USING HIGH PERFORMANCE LIQUID CHROMATOGRAPHY (HPLC) — REFERENCE METHOD