RS ISO 4221: 1980 AIR QUALITY — DETERMINATION OF MASS
CONCENTRATION SULPHUR DIOXIDE IN AMBIENT AIR
— THORIN SPECTROPHOTOMETRIC METHOD
30,000.00
110
3,300,000.00
2
Rwanda Standards
RS ISO 18857-2: 2009 WATER QUALITY — DETERMINATION OF SELECTED
ALKYLPHENOLS —
PART 2: GAS CHROMATOGRAPHIC-MASS
SPECTROMETRIC DETERMINATION OF
ALKYLOPHENOLS, THEIR ETHOXYLATES AND
BISPHENOL A IN NON-FILTERED SAMPLES
FOLLOWING SOLID-PHASE EXTRACTION
DERIVATISATION
