Material selection method for sample vial gaskets, caps and bottle bodies

• Recommended for single injection

• Excellent solvent resistance and chemical compatibility

• Does not reseal after piercing

• Prolonged sample storage is not recommended

PTFE/Silicone

• Recommended for multiple injections and sample storage

• Has excellent resealing properties

• The chemical resistance of PTFE before piercing and the chemical compatibility of silicone after piercing

•Most customers choose this material

PTFE/Silicone (pre-slit)

• Eliminate the phenomenon of needle blockage and broken needle at the bottom end after sampling

• Good resealing ability

• Recommended for multiple injections

Clamp cover

The crimp cap squeezes the septum between the rim of the glass vial and the crimped aluminum cap

bayonet cover

Snap caps are an extension of the way crimp caps seal

screw cap

Screw caps are the most commonly used, mostly made of polypropylene, and the maximum operating temperature is 135 °C

33-Borosilicate glass, currently one of the most chemically inert glasses, has low dissolution, high temperature resistance, high strength, high light transmittance and high chemical stability, suitable for high activity sample detection, Walter World and other imported brands mostly use this material, and its linear expansion coefficient is 33

51-Borosilicate glass, commonly known as neutral borosilicate glass, is currently one of the most widely used materials by customers

68-Borosilicate glass, low borosilicate glass, its chemical properties are much worse than the previous two, so the price is also much lower, and it is only suitable for one-time use