RS ISO 23590: 2020 HOUSEHOLD BIOGAS SYSTEM REQUIREMENTS:
DESIGN, INSTALLATION, OPERATION, MAINTENANCE
AND SAFETY
19,500.00
23
448,500.00
2
Rwanda Standards
RS ISO 2271: 1989 SURFACE ACTIVE AGENTS — DETERGENTS — DETERMINATION OF ANIONIC-ACTIVE MATTER BY MANUAL OR MECHANICAL DIRECT TWO-PHASE TITRATION PROCEDURE