RS ASTM D1783: 2020 STANDARD TEST METHODS FOR PHENOLIC
COMPOUNDS IN WATER
12,000.00
21
252,000.00
2
Rwanda Standards
RS ISO 14502-1: 2005 DETERMINATION OF SUBSTANCES CHARACTERISTIC OF GREEN AND BLACK TEA — PART 1: CONTENT OF TOTAL POLYPHENOLS IN TEA — COLORIMETRIC METHOD USING FOLIN-CIOCALTEU REAGENT