PTFE Septa * -200 +250 -328 +482 Polyethylene (PE) * -50 +80 -58 +176 Polypropylene (PP) * 0 +121 32 +250 Butyl/Chlorobutyl/Bromobutyl Stopper or Septa -20 +125 -4 +257 Gray PTFE/Red Rubber -40 +120 -40 +248 PTFE/White Silicone PurePack Septa -60 +200 -76 +392 Gray PTFE/Molded Black Butyl (Pharmafix) Septa -20 +125 -4 +257
Chemglass. Replacement septa for use with MW-102 open-top screw caps on Minum-Ware® glassware components. 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. Compare this item.
PTFE chemical resistance until punctured, then the septum will have the chemical compatibility of silicone Working temperature range from -40 ˚C to 200 ˚C Pre-slit PTFE/Silicone Provides adequate venting to prevent vacuum formation in sample vial, delivering excellent sample-draw reproducibility Eliminates coring from bottom draw needles
white PTFE/red Silicone septa, 11mm crimp-top aluminum cap,5.5mm centre hole pre-slit white PTFE/red Silicone septa, 11mm crimp-top aluminum cap,5.5mm centre hole Non-slip Nature PTFE/White Silicone septa,11 mm crimp -top aluminum cap, 5.5 mm centre hole 100pcs/pk 100pcs/pk Model No. Description IPA150 IPB250 IA250 IA250 IPB250 IB300 IB300 V18A
Dislodged or misaligned septa • Sample loss Silver aluminum, thin PTFE septa 100/pk 5182-0871 Magnetic crimp caps for CTC Autosampler 100/pk
the solvent. PTFE/Silicone septa are ideal for use in most HPLC and GC applications where resealability and purity are critical. Pre-slit PTFE/silicone septa Pre-slit septa are offered in many of the same formulations as for non-slit PTFE/silicone septa and shares most of the physical and chemical characteristics.
PTFE/Silicone Septa: (T/S) PTFE/Silicone is the most versatile septum material offered in various formulations to address specific applications requirements . Extractables from PTFE/Silicone septa are generally at lower levels compared to other resealable materials . PTFE/Silicone septa are formulated for different hardness (durometer)
Vial septa are available in a variety of materials. Septa, tan PTFE/silicone (diam. x thickness 8 mm x 1.5 mm) are sized to fit screw top vials. They are suitable for use with most organics (until pierced) and are not recommended for use with chlorosilanes. Compare this item.
Dec 11, 2018 · burrs around the caps that might prevent the vial from sealing, and septa should be lined with a polytetrafluoroethylene (PTFE) layer of sufficient thickness to limit diffusion of VOCs out of the vials during storage. PTFE thicknesses of 0.13 to 0.25 mm have been shown to be effective. See reference# 18 in Sec. 4.6 below and Sec.
Both types of silicone and butyl rubber septa have a PTFE barrier layer which faces the sample, which reduces the contact between the sample and the silicone and butyl rubber. Before the PTFE layer is punctured, the chemical compatibility properties of the PTFE will
Bottle Septa. Septa for bottles provide an airtight seal for bottles that prevents environmental contaminants but allows for the removal of the bottle’s contents by piercing with sharp needles. Septa bottle caps are generally available for open-top and screw caps and allow for aseptic syringe dispensing, as well as the addition of materials.
PTFE-Coated Silicone, Pre-assembled 1000 B4000022 20 mm Gray Butyl/PTFE Pre-assembled Cap/Septa/Spring 1000 N9306264 20 mm Gray Butyl/PTFE Pre-assembled Cap/Septa/Spring 100 N9306265 Clear 20 mL Headspace with Write-On Patch and Fill Lines Gray PTFE/Butyl Kit, Unassembled Cap/Septa/Spring 100 N9306266
Select Level 3 products for ultimate performance and sensitivity from your methods, while maintaining the highest levels of sample security and integrity. Choose from a variety of kits containing short thread screw vials in glass or TPX and polypropylene caps with silicone/PTFE septa designed to reduce autosampler needle issues.
Jul 31, 2020 · Needle Gauge: A bigger needle gauge can need more force to get through non-pre-slit septa, which could cause damage to the septa or sample contamination. A pre-slit septum might be the best choice in this situation. Injection Frequency: A pre-slit septa may be more appropriate for applications requiring repeated injections since it can lessen
Hamilton. High Temperature Septa is made of preconditioned PTFE/silicone rubber and is 3.175 mm (0.125 in.) thick. The average life of these septa is up to 100 injections with a 26s gauge needle. The maximum operating temperature is 212° C. Preconditioned PTFE/silicone rubber septa, 3.175 mm. Compare this item.
