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Differences between Reference Materials and HighPure Reagents

There are several different names in China and other countries for Reference Materials and also different names with different systems. Here we use Reference Materials (RM). There are 2 measuring stan…

What Influences The Retention Time Shift Is Not Only The Mobile Phase

During the liquid phase chromatograph experiment, we always face some issues, like the retention time shift. It’s a headache problem, and there are so many factors causing the peak retention time shif…

What if the ordinary sample vials are not easy to be used? Let we Welch help you

When you operate ion chromatograph or mass spectrometry detection, you find some impurity peak issues, maybe because it’s caused by the test matter or the sensitivity. It’s quietly probably cased by t…

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