Skip to Content
MilliporeSigma
All Photos(1)

Documents

28336-U

Supelco

Molded Thermogreen® LB-2 Septa, with injection hole

diam. 11 mm, pkg of 50 ea

Synonym(s):

TM=["Thermogreen"] LB-2 Septa (11 mm)

Sign Into View Organizational & Contract Pricing
All Photos(1)

About This Item

UNSPSC Code:
12000000
NACRES:
SB.54

packaging

pkg of 50 ea

diam.

11 mm

Looking for similar products? Visit Product Comparison Guide

Related Categories

General description

The Perfect Combination of Low Bleed, Thermal Stability, and Easy Puncturability!

Molded Thermogreen LB-2 septa are manufactured from high quality, low bleed material using the same exclusive LB-2 rubber formulation that chromatographers are accustomed to using. The difference is that molded septa, unlike traditional die-cut septa, offer easier installation and better sealing inside the injection port. This is because our liquid injection molding process ensures that every septum conforms to the same shape with crisp, clean sides. This is an improvement over a die-cutting process where septa can become cupped and/or distorted when the cutting surface becomes dull.

The useable inlet temperature range of 100-350 °C is adequate for most GC applications. Don′t be fooled by other septa that advertise a maximum temperature of 400 °C! Tto make septa with high thermal limits, they must be made stiffer, resulting in septa that are harder to pierce and easier to core! Our molded Thermogreen LB-2 septa offer the perfect combination of low bleed, thermal stability, and easy puncturability.
  • Rubber formulation exclusive to Supelco
  • Strict tolerances (diameter, thickness, injection hole) due to constant dimension of the mold itself
  • Ultra low bleed over a wide range of inlet temperatures (100 °C to 350 °C)
  • No foreign substances/powders (which could contaminate the inlet) are used during manufacturing
  • Fully tested for bleed and contamination
  • Already conditioned, ready to use
  • Ideal for use with low bleed GC-MS columns

Other Notes

The injection hole helps guide the syringe needle to puncture the same location every injection, resulting in two benefits:
  • Minimal coring leading to long life
  • Less septum fragments that contaminate the inlet liner
Their high puncture tolerance makes these septa ideal for use with autosampler injections, manual injections, and/or SPME applications.

Legal Information

Thermogreen is a registered trademark of Merck KGaA, Darmstadt, Germany

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number

Sorry, we don't have COAs for this product available online at this time.

If you need assistance, please contact Customer Support.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Articles

GC/MS/MS Analysis of BPA in Energy Drink

Study demonstrates SPME of BPA from an energy drink using an overcoated PDMS/DVB fiber, followed by GC/MS/MS analysis.

Protocols

HS-SPME-GC/MS Analysis of Terpenes in Hops & Cannabis

SPME offers efficient sample preparation for analyzing terpene/terpenoid profiles in plant essential oils using automation.

Analysis of Residual Solvents in Hemp Extracts

SPME enables rapid, sensitive GC/MS analysis of residual solvents in hemp extract, ensuring accuracy and efficiency.

Bisphenol A Analysis in Food by SPME

Overcoated SPME fiber enables low-level BPA analysis in food via SPME-GC-MS/MS, meeting tighter migration limit regulations.

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service