Spike cap and pretreatment method of sap set using this spike cap

摘要

The present invention is characterized in that a hydrophobic filter is provided on the inner side of a tip portion of a spike inserted into a cap from an insertion port to transmit a gas in a cap and prevent liquid and solid from permeating, A spike cap provided with a lid is used and a hook provided with a stop portion on a flange provided on the spike or a hook for mooring to the liquid tube is provided. By applying these caps to the liquid set, The present invention provides a new liquid set capable of pre-processing by priming and back priming by a process, preventing an accident caused by a human error in the order of dosing, and easily setting a standard use order.