The Introduction of Deactivated Sample Vials
The silicon hydroxyl group with strongly polar on the surface of glass sample vials will adsorb the samples. Based on such reasons, people produce hydrophobic glass surfaces by silylating the sample vials in order to eliminate the adsorption of the sample vials, which is widely used in protein or pesticide residue analysis.
For instance, glass has high adsorption of protein. The content of pesticide residue is very low when analyzed. Under these circumstances, if the sample vials adsorb the protein in the residue, the error will be great.
In short, the deactivated sample vials are the ordinary vials that the inner wall is deactivated. Or the vials are treated by silanization, which produces a hydrophobic surface. Commonly, it is not easy to see the difference from the outside. But it is very obvious when adding liquid to the vials.
There is no concave liquid surface at all. In fact, the material of general sample vials has no problem for general application.
Compared with the materials of sample vials, there are still many problems with vial pads when used in the experiments. Therefore, we should be careful when choosing vial pads.