PTFE/silicone septa are always best. What force is required to penetrate the septum? Generally, silicone septa are more easily pierced than red rubber or butyl septa. For thicker, hard-to-pierce septa, a small gauge (23 gauge) needle may be required, or a stronger S-needle can be used. Preslit septa are the best option for

Analytical Vials. Vials play a significant role in analytical analysis and result reproducibility. Vials must be inert and free of extractables or leachables to prevent affecting results. Using certified, application-specific, contaminant-free vials can significantly reduce risk. We offer a broad spectrum of Supelco ® products including

8mm Autosampler Vial Septa Catalog number: 8-6RT1 Related applications: Chromatography Technical Support Customer Service Aijiren Tech™ Septa for 8-425 Screw Thread Caps are constructed of PTFE, PTFE/rubber, or PTFE/silicone to suit a variety of HPLC, GC and IC applications.

Best septa choice when temperatures are over 125°C. Natural PTFE/red silicone – ST3HT High temperature formulated seal with low bleed. Best septa choice when temperatures are up to 300°C. Blue silicone/red PTFE – ST144 Thin 1.4 mm seal with PTFE face. Resealing capability limited due to thinner silicone layer. Aluminum/white silicone – AS3

PTFE/Silicone septa are the preferred product for use in most HPLC and GC applications where resealability and high purity are critical. PTFE/Silicone septa are offered in a standard formulation as well as a soft durometer formulation recommended for applications where ease of needle penetration is important PTFE/Silicone/PTFE Septa: (T/S/T)

High Performance Liquid Chromatography – Accessories HPLC/UHPLC columns, guard columns, filters for LC, fittings, capillaries for LC, bottles for mobile phases, frits, lamps for detectors, spare parts for LC, etc. Thin Layer Chromatography TLC plates, chromatographic paper, accessories and sets, reagents, TLC sorbents. Electrophoresis – accesories

High Performance septa are the recommended option for reliable and efficient HS/GC analyses at high temperature. Experimental Screw caps and crimp caps with High Performance septa were tested for blank background and solvent compatibility at various pressure and temperature conditions.

Mar 17, 2009 · In HPLC often slitted or cross-slitted Silicone/PTFE Septa are used, in order to offer a penetration aid for the fairly thick and dull needles used in the HPLC instruments. While the instrument needle requires the slitted septa, the user may run into the risk of concentration changes due to the evaporation of solvents.

injection methods. PTFE septa are rarely used for GC applications. Polyethylene (PE) Septa and Integral Molded Closures Chemically resistant polyethylene septa are usually molded into single-piece caps. The surface for needle penetration is 0.01" thick, allowing for use with most HPLC autosamplers. Polyethylene septa are not resealable and are

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

These HPLC and GC vials are available as snap, screw or crimp in style, 15uL to 20 mL in sample size, and various of low bleed and high-quality material composition. For GC, GC/MS applications where sample matrices contain volatile or semi-volatile analytes of interest, the most common choice are crimp style vials to limit sample contents from

Aug 28, 2017 · Various grades and types of septa are available including septa specifically designed to minimise leachates into the sample solution. Figure 5: Comparison of the effect of wearing different laboratory glove types when preparing aqueous mobile phase for HPLC. Comparison of baseline profiles (254 nm) obtained following enrichment of 60 mL aqueous

Septa Selection Tool | Aijiren Tech Scientific - US Popular TaqMan Real-Time PCR Assays Antibodies Oligos, Primers & Probes GeneArt Gene Synthesis Cell Culture Plastics Applications & Techniques See Links For Applications & Techniques Brands See Links For Brands Aijiren Tech Applied Biosystems Invitrogen Aijiren Tech Scientific Unity Lab Services

Champagne vials. (volume 1.5 ml or 3.5 ml) clear and amber glass. used for injection of very low volume samples. it is not neccesary to use inserts. crimp (and snap type) and screw (8, 9,10-425 neck) vials, septa with diameter 8 mm, 9 mm, 10 mm for 1.5 ml vials. and 13 mm septa for 3.5 ml vials.

2 Shop online store.shimadu.com or call Shimadu at 800-477-1227 Vial selection for an HPLC system is an important but often overlooked step. Several characteristics of vials and septa are critical for optimum performance