Maximizing Sample Integrity with Chemically Resistant PTFE-Coated Butyl Septa

PTFE Coated Butyl Rubber Septa for Custom Screw Top vials p/n N9302945, Pkg 100

The Finneran 9 mm septa in white color, is mainly used with screw thread closures for tight sealing of the stored sample. It is mainly used in research laboratories or in chemical industries. This septa is made of sturdy PTFE material which ensures long lasting usage and durability. Compare this item.

Butyl rubber/PTFE septa are used with ketones and acids, and where silicone-containing septa do not perform well. 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.

Unplasticized PVC or PVC-U has excellent mechanical and chemical resistance properties at low cost. The working temperature range of PVC valves is 0 to 60°C (30 to 140°F). Vinyl is plasticized PVC. The added plasticizer produces a flexibile material for such products as tubing, but offers poor chemical resistance.

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.

PerkinElmer Cap/Septa - 20MM PTFE/Butyl (100), Sample Holder Supplies Sample Introduction Components & Kits ... Chemicals Symposium - Pharmaceuticals and Personal ...

KIMBLE® PTFE-Faced Red Butyl Septa, 20 or 20A, Case of 100 See all 7 items in this product family 20,20A models are suitable for aluminum seal finishes

Multiple injection? Storage temperature? Good resealability properties necessary -40 °C -40 °C -60 °C natural rubber/TEF natural rubber/TEF; butyl/PTFE red rubber/ PTFE silicone/ PTFE Thin, fragile needle? Soft and thin septa required e.g. silicone/ PTFE Blunt, thick needle? Slit/pre- cut liner as penetration aid (HPLC) silicone/ PTFE, slit

Tuf-bond Septa (9711D10 to D45) Thickness: 100 mils Of silicone rubber with PTFE facing 10 mils thick Septa of butyl rubber, silicone rubber or rubber-laminated PTFE are available on special order. Septum diameter indicated in listings. 20 mm Crimp Top Aluminum Silver Cap with PTFE/Silicone Septa.

Septum Selection Guide Septa for use with general chromatography vials, liquid injection 2-056 PTFE/Natural Red Rubber PTFE Natural Red Rubber are moderately priced seals for GC and HPLC with good chemical properties. They are ideal for multiple injections due to high resealability, but not as easy to penetrate as PTFE/RR.

PTFE-fused septa are suitable to overcome the degradation, which happens due to prolonged high temperatures, commonly observed in silicone rubber septa. The degradation results in baseline drift and additional peaks. It is generally fixed with the PTFE face towards the column packing.

PTFE resistance until punctured, then septa or liner will have compatibility of butyl rubber: PTFE does not reseal after being punctured: PTFE: Diethylamine, fluorine: Single injection use: Red Rubber: Acetone, alcohols, diethylamine, DMSO, sodium peroxide: Chloroform, DMF, HF, HCL, MEK, phenol, toluene, xylene: Excellent: Red Rubber / PTFE

For aluminum seal finishes. PTFE is highly chemical resistant to maintain integrity of contents. Available for vials with a 13 mm and 20 mm OD. Cat. No. 224168 is a specially molded septa with a PTFE inset. The sealing surface of butyl and PTFE effect a more positive seal than plain PTFE faced septa. $217.32 USD/Case of 100. Add to Cart. In stock.

Polyethylene (LDPE and HDPE) Resistance Chart by Chemical. The chemical compatibility of LDPE and HDPE on this chart is tested at 20°C: and 50°C: for 7 days and 30 days (if applicable) with constant exposure. LDPE & HDPE resistance listed by chemical. 1.4-dioxane. LDPE / HDPE at 20°C: little or no damage after 30 days.