SureSTART™ 2 mL GOLD 级玻璃螺口和钳口样品瓶，3级高性能应用

For very polar compounds, including ionizable biomolecules and inorganic ions, the use of a plastic vial may be considered. Polypropylene vials are included in the SureSTART range as a Level 1 range of products.

Most polar analytes can be analyzed successfully in glass vials with few problems at normal analytical levels. Low concentrations may require investigation of deactivated vials, but in most cases the control of the sample pH is enough to maintain linearity.

Type 1 neutral borosilicate glass is suitable for neutral/acid samples with little change of pH caused by the glass surface.

For analysis of compounds which show interactions with untreated glass surfaces, it may be necessary to use a deactivated glass vial. The effect of adsorption is most apparent when dealing with very low concentrations of the sample. It is likely that this effect will only be identified during calibration. Analytical results will show poor reproducibility and linearity for active samples while non-adsorbing species show good results.

Inert glass products can be found in Performance level 3, and include silanized glass and GOLD-grade technology deactivated glass.

In addition to the features on standard 2 mL vials, SureStop vials also have a patented definite stop point (alignment ring) in the design of the vial finish. This prevents the vial from being an optimal seal, which eliminates under- and over-sealing by the cap/closure and user-to-user variance.

SureStop vials are designed for use with Advanced Vial Closure System (AVCS) screw caps. They improve transfer reliability and give a more secure liquid seal than standard screw vials. SureStop vials are available as a 2 mL as either clear or amber options and are highly recommended for use with GC and LC applications.