网页These septa are ideal for standard manual-injection GC and GC-MS. Septa are 3 mm thick, except Shimadzu-style plug septa. Septa are packaged in glass jars. Septa are packaged in glass jars. The 9.5, 12.7 and 17 mm diameter Long Life septa are supplied without the unique center depression, but still provide outstanding longevity at inlet temperatures up
网页A specially moulded seal with a PTFE insert. Sealing surface of Butyl and PTFE affects a more positive seal than non-PTFE-faced septa. Ideal choice for temperatures below 125°C. Good sealing characteristics, excellent resistance to most solvents with reduced coring and high puncture tolerance.
网页Home » News » GC Septa » Discovers Not HPLC septa Products list 1-4mL Autosampler Vials for HPLC, UPLC, GC 16mm, 25mm Test Tubes for Water Analysis 6-20mL GC
网页2005年9月1日 · Figure 2 - Septum degradation (seen as ghost peaks). Following is a simple test that can be performed in the laboratory: Keep the column cold (30 °C) for 15 min, perform a blank run (no injection—only a temperature program up to 300 °C), and observe the baseline. After that run, cool the column to 30 °C again, keep it at 30 °C for 60 min
网页Molded Septa are manufactured from high quality, low bleed material that uses the same exclusive LB-2 rubber formulation chromatographers are accustomed to using. Design. With Injection Hole. Type. Septa. For Use With (Equipment) Low Bleed GC-MS Columns. Temperature (Metric) Max. 350°C.
网页2020年10月27日 · All GC septa, regardless of their composition, puncturability, or resistance to thermal degradation, will be a source of problems if they are mishandled.
网页Gas Chromatography PRODUCT NOTE Key Features: • Select from a range of GC septa with varying properties limits • Non-stick coating ensures no adhesion of the septa to the GC inlet • Pre-conditioned septa, ready to use
网页2020年10月19日 · Description. Septa replacement is one of our most common tasks when doing routine GC inlet maintenance on our gas chromatographs. Fortunately, it is also one of the easiest! In this example, we replace the septum in an Aijiren gas chromatograph. The steps may vary on a different instrument or configuration.
网页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. 0.
网页PTFE septa are rarely used for GC applications. Polyethylene (PE) septa and integral molded closures Chemically resistant polyethylene septa are molded into single-piece caps. The surface for needle penetration is 0.01" thick
网页Septa. Ensure optimal performance of your GC instrument with bleed and temperature optimized Aijiren Tech™ BTO and TR-Green Septa. Made of low-bleed silicone,
网页2012年7月10日 · All other septa except Septum C showed satisfactory performance (negligible ghost peaks) at IP temperature ≤150 C shown in Figures 4A and 4B. In case of
网页It is not column bleeding since it shows these peaks for just one special sample. In the attached file, all of the big peaks are detected as hexadecamethyl heptasiloxane! GC.png 16.03 KB Siloxanes
网页High Temperature GC Septa. 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.
网页2016年7月1日 · Septa for Inlets. Arguably the most stressed-out parts of a GC system, inlet septa are tasked with maintaining a leak-tight seal between the atmosphere and carrier gas while not introducing significant contaminants into the carrier-gas stream-all of this while heated to upwards of 250 °C and being repeatedly punctured by sharp needles.
