Whether the second-hand liquid quality can meet the demand compared with the new machine

In fact, the use value of second-hand liquid and the new machine is also the same, strictly speaking, liquid is liquid chromatography - mass spectrometry technology, the application value of this technology is very large, especially the detection of food safety issues, as well as the analysis
of natural products.

The analysis of general natural products is relatively less contacted, and our lives do not have much to do with each other, more important is the safety testing of food, which is closely related to our lives, so it is good
for everyone to know more.

Its principle is to first separate the detected substance and then analyze
the parts.

The principle is very easy to understand, but it is more difficult to do, for his separation process is to use liquid chromatography as a separation system, mass spectrometry as a detection system, so that the separation detection system is complete
.

This separation is not what we usually call separation, bone and flesh separation, the separation here is ionic, that is, microscopic , the sample is ionized by the mass analyzer to separate the ion fragments according to the mass number, and then the mass spectrogram is obtained by second-hand liquid quality detection
.

The advantage of this combination method is very large, it is through the combination of the advantages of chromatography and mass spectrometry, the use of high separation ability of chromatography, as well as the high selectivity of ms, high sensitivity and can provide relative molecular weight and structural information combined, so that the analysis of the results are more accurate
.

At present, the second-hand liquid quality on the market is also very good, because this analytical instrument is generally more expensive, and the second-hand equipment is the same as the effect, so many customers will choose this second-hand, cost-effective
.

And now there are a lot of second-hand equipment that has just been replaced for a long time, which is very good, but the price is far from the new one
.