The blue Push-On caps made of PE have a thinned penetration point, but no additional septum. They are an inexpensive alternative to crimp caps for non-critical applications.

The transparent PE caps are 9 x 5.9 mm and have a 4 mm centre hole.

Septa made of natural rubber are temperature-resistant from -40 °C to 120 °C and ideal for multiple injections thanks to their excellent resealability properties....

Snap ring vials and micro-vials ND11 with wide opening made of natural or amber PMP or PP are a shatterproof alternative to glass vials....

Crimp neck vials and micro-vials ND8 are available in clear and amber first hydrolytic class glass. They can be sealed with 8 mm crimp caps, 9 mm PE caps or 8 mm push-on caps. The micro-vials often require an adapter so that they can be used in an autosampler.

These vials are especially used with autosamplers made by Beckman, CTC, Gilson, Knauer, Shimadzu, Spark, Varian and VWR/Hitachi....

Crimp seals ND8 are made of aluminium. They are plain lacquered with a 4 mm hole and supplied with fitted septa made of a variety of materials.

These septa are temperature-resistant from -60 °C to 200 °C and have better purity than septa made of natural rubber or red rubber. However, they have less effective resealability properties and are therefore more suitable for single-injection applications. Septa with a double-sided PTFE coating show a very low particle formation during penetration....