RS ISO 11905-1: 1997 WATER QUALITY — DETERMINATION OF NITROGEN — PART 1: METHOD USING OXIDATIVE DIGESTION WITH PEROXODISULFATE
19,500.00
1
19,500.00
2
Rwanda Standards
RS ISO 21138-1: 2020 PLASTICS PIPING SYSTEMS FOR NON-PRESSURE
UNDERGROUND DRAINAGE AND SEWERAGE —
STRUCTURED-WALL PIPING SYSTEMS OF
UNPLASTICIZED POLY(VINYL CHLORIDE) (PVC-U),
POLYPROPYLENE (PP) AND POLYETHYLENE (PE) —
PART 1: MATERIAL SPECIFICATION AND PERFORMANCE
CRIT
