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网页Every laboratory should have a preventative maintenance schedule that is adhered to, allowing their GC systems to produce optimal chromatography, day-after-day, monthafter- month, and year-after-year. An example of a preventative maintenance schedule is shown in Table 1. A separate maintenance log book should be kept for each instrument, where
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网页When this happens, septa material can flake off into the vial and contaminate the sample. To prevent coring : • Choose a PTFE-lined septum to prevent sample contamination • Make sure the needle is not damaged and consider a
网页High Temperature GC Septa. High Temperature Septa is made of preconditioned PTFE/silicone rubber and is 3.175 mm (0.125 in) thick. The average life of these septa is up to 100 injections with a 26s gauge needle. The maximum operating temperature is 212° C.
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