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The Casri Water Detection Capsules can be used to indicate the presence of free water (suspended water) in jet fuels at handling temperature, which is simple, rapid and sensitive. Casri is authorised and approved by the Civil Aviation Administration of China.  A 5ml sample is drawn through the detector head into the syringe. An initial indication occurs at about 10ppm when the capsule turns from a pale yellow to a pale green colour. The colour deepens to a dark green-blue, indicating a water content of 30ppm.

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Casri水檢測膠囊可用于指示操作溫度下噴氣燃料中游離水（懸浮水）的存在，該溫度簡單，快速且靈敏。 Casri由中國民航總局授權和批準。 通過檢測器頭將5毫升樣品吸入注射器。 當膠囊從淺黃色變成淺綠色時，最初的指示出現在大約10ppm處。 顏色加深為深綠色-藍色，表明水含量為30ppm。