black polypropylene hole cap, thread for 8-425, PTFE/silicone, Top Hat (septa and closure designed to fit together tightly), for use with 2 mL vial, 4.6 mm opening, pkg of 100 ea. Expand. 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.

Certified Kits, screw thread vials, 12 x 32 mm, 9 mm thread, unassembled, pkg of 100, volume 2 mL, clear glass vial (with graduated marking spot), PTFE/silicone septum (with slit), (septa bonded to cap)

PTFE/Silicone Septa: (T/S) High quality, pure silicone is laminated to 0.005” thick PTFE to give a pure, highly inert septum with excellent resealing characteristics even after repeated punctures. PTFE/Silicone septa are the preferred product for use in most HPLC and GC applications where resealability and high purity are critical.

Description. Pricing. Details. black polypropylene, septum (TEF/red rubber), septum thickness 1.3 mm, 8-425 thread. Expand. Hide. 854987. black polypropylene hole cap, thread for 13-425, PTFE/red rubber septum, for use with 4 mL vials with 13-425 thread, pkg of 100 ea. Expand.

Aijiren headspace vials come in two basic sizes (10 mL headspace vials and 20 mL headspace vials). Both flat bottom and round bottom styles are available for use in a wide variety of headspace instrument platforms. Aijiren's headspace vial caps are engineered to prevent sample contamination while providing consistent, secure seals.

Millicell Cell Culture Insert, 12 mm, hydrophilic PTFE, 0.4 µm. Compare. Product No. Description. Pricing. PICM01250. Hydrophilic PTFE cell culture insert with pore size of 0.4 µm used in a 24-well plate for Cell Attachment, Cell Culture, Cell Differentiation, Fluorescence & Low Protein Binding. Expand.

PTFE/Silicone/PTFE Septa: (T/S/T) * -60 +200 -76 +392 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

Table 1. Septa chemical compatibility. Solvent PTFE PTFE/Silicone PTFE/Silicone/PTFE* PTFE/Red rubber Fluoroelastomer PTFE/Butyl Acetonitrile Hydrocarbons (hexane, heptane, methane) Methanol Benzene THF Toluene DMF DMSO Ether Chlorinated solvents (methylene chloride) Alcohols (ethanol) Acetic acid Acetone Phenol Cyclohexane

black polypropylene hole cap, thread for 8-425, PTFE/silicone (red PTFE/creme silicone), septum thickness 1.5 mm, for use with 2 mL vial (standard opening), pkg of 1000 ea Expand Hide

If it is necessary to invert the container to remove air bubbles, be extremely careful not to accidentally withdraw the needle from the septa. Figure 6. Safe syringe techniques when working with rubber septa. Withdrawing liquid when nitrogen backfill is required (e.g., pyrophorics) Always clamp the container.

Mar 31, 2022 · PTFE disk septa. A solid disk 0.010″ thick, our PTFE stands better than the most aggressive solvents. At least when it comes to chemical inertness. Most standard gauge metal HPLC needles can penetrate the thin membrane. Do not use PTFE septa with the following because you can’t release PTFE septa: 1. volatile solvents, 2. fast cycle periods,

Aijiren's 2 mL screw top vials are constructed from Type 1 borosilicate glass, with low metal content, to protect your sample from destabilizing or leaching. Our 2 mL glass vials are available in both amber and clear versions. The associated 9 mm vial screw cap comes with your choice of septa constructed from either PTFE/silicone, PTFE/silicone

854985. black polypropylene hole cap, thread for 8-425, PTFE/silicone (red PTFE/creme silicone), septum thickness 1.5 mm, for use with 2 mL vial (standard opening), pkg of 1000 ea. View Pricing.

Polytetrafluoroethylene ( PTFE) is a synthetic fluoropolymer of tetrafluoroethylene and is a PFAS that has numerous applications. The commonly known brand name of PTFE-based composition is Teflon by Chemours, [3] a spin-off from DuPont, which originally discovered the compound in 1938. [3]

Septa seal the two conical flasks. A cannula is used to transfer THF from the flask on the right to the flask on the left. Cannula transfer or cannulation is a set of air-free techniques used with a Schlenk line , in transferring liquid or solution samples between reaction vessels via cannulae , avoiding atmospheric contamination.