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水检测胶囊可用于指示操作温度下喷气燃料中游离水（悬浮水）的存在，该温度简单，快速且灵敏。 Casri由中国民航总局授权和批准。 通过检测器头将5毫升样品吸入注射器。 当胶囊从浅黄色变成浅绿色时，最初的指示出现在大约10ppm处。 颜色加深为深绿色-蓝色，表明水含量为30ppm。