Sulphur in LPG - Accurate, Rapid, Safe with ASTM D 6667 and ASTM D 7551

Liquefied pressurised gases are valuable feed materials in petrochemical and polymer industry for the synthesis of higher-molecular compounds. But sulphur impurities have negative effects on final products and catalysts. This necessitates a precise monitoring regarding ASTM D 6667 and ASTM D 7551. Their pressure requires a special metering technique, which ensures safe sample handling, reproducible dosing, soot-free combustion, and thereby reliable results. Multi EA 5000, from Analytik Jena (Germany) is the solution. A special dosing valve featuring a Peltier cooling prevents premature expansion of the sample and incomplete combustion. The system can even handle lowest pressures without auxiliary gas. A further advantage is the clearly reduced maintenance effort and the faster analysis due to a flexible selection of the sample volumes. Fast, accurate readings are now standard in routine labs - independent of operator, sample pressure and element content.