Low Adsorption Vial
LC/MS(/MS) has been introduced in many fields as an indispensable separation analysis method thanks to its high sensitivity and selectivity. Samples can therefore be detected even at low concentrations. However, the loss due to adsorption of the sample to equipment can adversely affect results.
Advances in instrumentation have been significant in reducing this sample loss, but consumables can become a limiting factor in achieving maximum performance.
That’s why, more than ever, consumables must be adapted to optimize results. Low adsorption is a key focus for improvement, and the TORAST™-H series continues to move with the times.
Features
- Low Adsorption of Glass
- The Concept Behind TORAST-H Vials
- The composition of the raw material used in the manufacture of vials varies depending on the type of glass, but in general 70-75% is SiO2, and the rest consists of metal (M) oxides. Metal oxides are added, for example, to improve the moldability of the glass by lowering its melting point. Metals tend to migrate to the glass surface during molding, so the surface of glass vials tends to have a high metal content.
These metal components break neighboring Si-O-Si (siloxane) bonds to form Si-O-M (metal silanolate) bonds. Compared to Si-O-H (silanol), Si-O-M is more easily ionized to form Si-O-, leading to ionic adsorption of base compounds.
