过期后我必须扔掉我的材料吗？
参考材料的生产商保证在规定的时间内（=保质期）材料的完整性和材料随附证书的有效性，前提是样品经过适当的运输和储存。此外，大多数生产商仅对未开封的容器保证这一点。换言之，一旦打开原始材料容器，就无法再保证材料的完整性。这并不意味着用户必须扔掉未使用的样本，但这只意味着生产者不能永远保证稳定性。有关更多信息，请参阅ERM应用程序说明7。
Do I have to throw my material away after the expiry date?
Producers of reference materials guarantee within a specified time (=shelf life) the integrity of the material and the validity of the certificate accompanying the material, provided the sample is properly transported and stored. Furthermore, most producers guarantee this only for the unopened container. In other words, once the original material container is opened material integrity can no longer be guaranteed. This does not automatically mean that the user has to throw away the unused sample, but it only means that the producer can simply not guarantee stability forever. For more information see ERM Application Note 7
专业供应欧盟BCR/IRMM/ERM，更多过期后我必须扔掉我的材料吗，请咨询客服！