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Packaging materials solvent residue measurement draft standard project
by：Lisson
2020-10-25
1, samples of access area of bottle and cosmetics packaging specifications, the choice of heating temperature and time are mainly refer to DIN EN13628 -
1:03 -
01.
Gas-solid balance heating temperature directly affect the testing results of the samples, select the temperature above the boiling point of organic solvent to be tested, but some materials (
Such as LDPE)
Due to temperature is higher than the melting point and decomposition, the impact test results.
So first recommended 100 for heating temperature.
2, the pretreatment of the sample way is to consult BS6455 -
The provisions of the 1984 and the general principles of the pharmaceutical packaging composite film, bag (
YBB00132002)
The sample pretreatment methods of comparison, with the method of placed directly, can avoid because of difference of cutting sample size affect the results.
3, the selection of chromatography column, as long as the measured organic solvents can be completely separated.
4, liquid organic solvent standard purity is not less than 99.
5%.
5, if the solvent content in the sample is beyond the scope of the standard curve, should readjust the scope of the standard curve (
Through the calibration of the syringe to dilute)
。
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