The new Finneran SPME Vials with a thicker lip are ideal for most SPME applications. The thicker lip vial creates a tighter seal on the vial. The Finneran SPME vials are manufactured from high quality Type I borosilicate glass. This new thicker lip vial is available in 10mL and 20mL capacities. To complete the package - JG Finneran offers the 20mm gold magnetic seal, 8mm hole with a thin 0.60" PTFE/silicone seal. The thin seal is a perfect choice for SPME applications. The thin seal extends the life of the needle and is available in blue or clear.