Originally published at: https://ref.crosspart.com/?p=2076817
![](https://cds.chemvn.org/original/3X/a/e/aeb19c40c528e764cf5b3018888089b40677f157.jpeg)
(Isocratic and Quaternary Pump). This procedure can be found be searching for ‘agilent seal wear in procedure’. The procedure requires isopropyl alcohol and a suitable restriction (~350bar) after the pump, in order to get the proper fit of the new seal around the piston.
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