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法國ISL  
ISL是PAC旗下的公司。
PAC是一個國際化的制造和服務集團，提供應用在不同領域的測試設備, 有超過250種的產品，主要用于石油、石化、食品和飲料行業，同時，PAC還提供藥物分析的解決方案。

PAC集合了世界上最好的油品分析儀器品牌，如Alcor, Antek, Herzog, ISL, PetroSpec和PSPI。產品線包括：閃點測定儀、粘度儀、蒸餾儀、瀝青材料測試儀、低溫性能分析儀、鹽含量分析儀、蒸氣壓分析儀、實際膠質分析儀、潤滑油蒸發損失測試儀、氮/硫分析儀、航空燃料熱氧化安定性測定儀、微量殘碳測定儀。

PAC旗下品牌產品的用戶已遍及六大洲。依靠著其廣大的經銷商網絡及優秀的銷售和服務團隊，PAC將繼續為用戶提供最出色的品牌和測試儀器。
       
ISL by PAC is a global provider of scientific apparatus and instruments for testing petroleum and petrochemical products in the lab and online. More than 20 automatic analyzers bearing the ISL brand are recognized for increasing test precision, boosting laboratory efficiency and reducing costs. ISL’s story began nearly 34 years ago when a group of engineers and scientists in the North of France, in the heart of the country’s petrochemical industry, began developing automatic instruments for use in the petroleum industry. Their facility, and the location, turned out to be an excellent proving ground for research and development of their new instrumentation.

By the mid 1970s, several quality instruments had been developed and were being marketed in Europe. It was during this period in 1975, that the ATPEM Trademark was born. The most famous of these new instruments was the Automatic Atmospheric Distillation ASTM D86 and the CPP 97, Automatic Cloud and Pour Point Analyzer, introduced in the early ’80s.

Easy, Versatile Testing
The staff realized that automation was the key in all development work. Adding several new automatic instruments each year, ATPEM soon became a worldwide leader in automatic petroleum testing instrumentation. In 1986, ATPEM was reorganized and became ISL. ISL soon became a worldwide leader in automatic petroleum testing instrumentation, and today is part of the PAC global family of leading analytical technologies and instrumentation serving a wide range of industries. More than 20 automatic analyzers bearing the ISL brand are recognized for increasing test precision, boosting laboratory efficiency and reducing costs, enhancing test safety, and eliminating operator subjectivity and human error.

ISL by PAC is the recognized leader in the field of physical testing equipment of petroleum products. ISL by PAC technology includes self-contained automated analyzers, such as mini distillation, flash and fire point, viscosity, cold properties, evaporation loss; lubricants and asphalts testing equipment. Products also include the MicroDist Online system for distillation.