Carried on the exploration testing of flow rate of infusion device about industry standard YY 0451-2010. Engaged in flow rate experiments adopting different method that are provided by new and old industry standard for samples of the same type. Compared with the result of the dangerous coefficient by calculating the test data, the old standard can be more sensitive to reflect the situation of product flow rate, so it can be applied to conventional control of the products. The method which provided by the new industry standard is suitable for evaluating periodicity the level of product contaminated.
Flowmeters ; Infusion Pumps

At present, there is no guidance or standard document to evaluate the performance of liquid stop membrane for infusion set, and it is impossible to conduct quantitative analysis and quality supervision of product performance. In this paper, a method for measuring bubble point pressure of liquid stop membrane is studied, and the correlation between bubble point pressure and the performance of liquid stop membrane is explored. The results of bubble point pressure test are used as the daily control index of liquid stop performance. It provides a practical reference value for the evaluation of liquid stopping performance of liquid stop membrane.