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.

Catalog number: S336-0040. Aijiren Tech™ Clear VOA Vials with 0.125″ Septa are designed for water sample collection for volatile organic analysis (VOA). Available with septum permanently bonded to the cap or unbonded for easy replacement. Perfect shoulder angle enables effortless filling without air entrapment.

Tube Caps and Closures. Plugs and caps of various material compositions, sizes, colors, and closure types to fit a wide range of tube types; may be sterile, non-sterile, and/or autoclavable; may possess leak-preventing features including O-rings and cap liners.

Septa. Septa are available in a variety of materials and thicknesses. PTFE Natural 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/High Performance Rubber is a highly pure synthetic red rubber septum

mixtures. Polypropylene septa offer better solvent compatibility compared to polyethylene, but piercing force is slightly higher. Viton (V1) septa Viton septa are used in situations where a resealable septum is required for a sample matrix that aggressively attacks all other materials. Viton offers chemical resistance similar to PTFE along with

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.

Aug 15, 2016 · septum already in 2016 (2-4, 6, 9, 12), vs. four instances in the preceding year, 2015 (5, 7, 10, 11); thus the problem is “on the increase.” These instances were broadly spread over a spec-trum of lung biology and medicine disciplines: clinical pulmo-nary radiology (4), lung developmental biology including al-

Inlet septa are used to maintain a leak-free seal under the septum nut in the GC inlet, even after many repeated injections. The dimple in the middle of the septum guides the syringe needle through the inlet into the inlet liner to minimize damage to the needle and to ensure injection consistency. Bleed temperature optimized (BTO) septa are

Mar 31, 2022 · Otherwise, it has similar chemical resistance as PTFE. Therefore, Viton provides the best chemical resistance for a wide range of solvents. Apart from that, Viton has an excellent piercing resistance. But, Viton is a septum of the last choice because of its exorbitant cost. Temperature stability chart for Viton septa:

Crimp seals with Viton ® septa 27245 silver aluminum seal, diam. 20 mm, open center, 8 mm center hole, black Viton ® septum, thickness 0.76 mm, pkg of × 100 ea

• Septa fail faster because needle is not guided with as much precision. • Under or Over tightening—tighten nut until c-clamp on top stops turning, then ½ to ¾ turn more. • Non-Aijiren septa may be too thin, too thick, or out of round like die-cut septa and may not seal as well. • “Use Environments” that decrease lifetime, like

Description. SDS. Pricing. SU860106. silver seal, magnetic (with 8mm center hole), diam. × thickness 20 mm × 1.0 mm, black Viton® septum, pkg of 100 ea.

solid disk of 0.010” thick PTFE offers superior chemical inertness against the most aggressive solvents. The thin membrane allows for easy penetration by most needles. PTFE septa are not resealable. They should be used with relatively short cycle times or single injection methods. Pre-slit PTFE/Red Rubber Septa:

Green polypropylene snap cap, clear Teflon/red rubber septa, 11 mm : 100/pk : x : : Red polypropylene snap cap, clear Teflon/red rubber septa, 11 mm : 100/pk : x : 5182-0540: Clear polypropylene snap cap, Teflon septa, 11 mm : 100/pk : 5182-0566: Clear snap cap, red Teflon/white silicone/red Teflon septa, 11 mm : 100/pk

Septa (cap liners) - Trajan Scientific and Medical. Septa liner and film materials: Silicone, silicone with PTFE, silicone with polyimide, silicone with FEP, butyl, foam, viton. · Septa thickness range: 0.25 mm to Wholesale PTFE Tubing Pipe ID_1MM-20MM OD_2MM-25MM . PTFE Insulated Tubing Pipe. Color: White.