Jan 02, 2006 · Figure 3 - Typical mass chromatogram of volatile residue in hexane caused by PTFE/silicone septa: a) hexane extract of a piece of septum; b) vial septum was punctured once by a syringe to sample 1 μL hexane for GC analysis; c) hexane in the last vial was reanalyzed after 3 days; and d) analyzed immediately after 100 μL hexane was added from one vial to another (the septum was punctured 10
Hide. 27262. black polypropylene hole cap, thread for 8-425, PTFE/silicone, septum thickness 1.5 mm, for use with 2 mL vial (standard opening), pkg of 100 ea. Expand. Hide. SU860076. black polypropylene hole cap, thread for 8-425, PTFE/silicone (red PTFE/white silicone), septum thickness 1.3 mm, for use with 2 mL vial (standard opening), pkg of
Septa are made of silicone rubber with one side having a RED PTFE face, while the opposite side has an ultrathin covering of polypropylene to prevent needle coring when penetrating septa.
Description Chromatography septas can be pre-slit. A pre-slit septum is an ideal choice in applications requiring 20% or more of the sample injection each time from the vial so that suction is avoided. The slit allows ambient gas to equalize the gas in the vial so that a vacuum is not created in the vial []
Buy Kinesis PTFE/Silicone/PTFE Septum, 9 mm; 1000/pk and more from our comprehensive selection of Kinesis® Septa for Vials from Cole-Parmer
Buy Kinesis PTFE/Silicone/PTFE Septum, 10 mm; 1000/pk and more from our comprehensive selection of Kinesis® Septa for Vials from Masterflex
Septa, PTFE/Silicone, tan PTFE/silicone septum, septum diam. × total thickness × PTFE thickness 18 mm × 0.060 in. × 2 mil, pkg of 144 ea Expand View Pricing
Both sided PTFE laminated liners required nElmer, Shimadzu, Thermo Scientific, VWR (Merck®)/Hitachi, etc. 2005 Field Sampling Procedures Manual: Chapter 6 Last - NJ.gov be used to prevent loss of the soil back into the borehole while raising the split glass vials with PTFE-lined septum screw cap and a magnetic stir bar.
PTFE/silicone – ST101, ST14 • A very pure soft silicone laminated to PTFE. Septum resists coring and is recommended for instruments with fine gauge needles • Also recommended for LC-MS and GC-MS due to high purity PTFE /silicone – ST143, ST144 A very soft silicone laminated to PTFE. Use with flexible needle PTFE /silicone/PTFE – TST1
23242-U: tan PTFE/silicone septum, septum diam. × total thickness × PTFE thickness 18 mm × 0.060 in. × 2 mil, pkg of 144 ea: Expand
PTFE coating ensures compatibility. Natural rubber/Ethylene Tetrafluoroethylene (TEF): features excellent resealing properties. Silicone/PTFE: cleanest solution for contaminant free sample handling; autoclavable, too. PTFE/Silicone/PTFE: PTFE laminated to both sides of high-purity silicone to prevent coring.
Representative image only. Add to Compare. Kinesis – Item # GZ-98706-01. Choose the right septum for optimal performance and results. Various materials, thicknesses and hardnessess to suit your application. Pre-slit septa prevent a vacuum forming inside the vial. Cream silicone/red PTFE, 13 mm dia. MORE +.
Aijiren presses Silicone and PTFE composite into the picture, and cuts them into rectangular sheets of similar size. Because PTFE is easy to curl and deform, the raw materials in the picture are all curled. Wait for it to enter the dryer to dry the moisture. Keep it level. Aijiren uses a mechanical laser to cut Septa, and guarantees the integrity and chemical nature of Septa.
• Tri-layer (also known as a sandwich septum): Still made from two distinct materials – usually silicone surrounded on both sides by PTFE Table 1. Septa chemical compatibility. PTFE/Silicone/PTFE* PTFE/Red rubber Fluoroelas tomer PTFE/Butyl *PTFE/Silicone/PTFE has the same chemical compatibili ty of PTFE only until punctured.
The septum is suitable for use with all GL 45 sizes of the DURAN® GL 45 bottles from 100 to 20,000 ml. A liquid tight seal is provided when used in combination with the red PBT GL 45 open topped screw cap. Wide temperature usage range from – 50 °C up to + 180 °C. Autoclavable at 121 °C for 15 minutes. Dry heat sterilizable at up to 180 °C.