These Thermo Scientific 10 mm wide opening screw-thread vials are manufactured from either clear Type 1, Class A glass or superior quality 51A amber Type 1, Class B glass. Vials have a 10-425 thread finish. Get maximum sample extraction without the need for separate inserts by using Microsampling and High Recovery Vials. Identify sample and volume using the graduated, write-on patch provided on certain vials. Obtain maximum recovery of critical polar, labile or OH-interacting compounds using silanized (deactivated) glass (optional). Polyspring inserts are self-aligning and provide a cushion against needle contact. Precision point inserts minimize residual sample loss. Autosampler compatibility includes Jasco, PerkinElmer, Shimadzu, Varian, and Waters. See the Thermo Scientific Columns and Consumables Catalog for autosampler compatibility.