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Accessories for Chromatography, Laboratory and Industrial Gas Purification

Scientific Glass Technology is a manufacturer of a wide range of filters (traps, scrubbers) for purifying compressed laboratory gases used in chromatography and research laboratories. SGT filters are available with 1/8" and 1/4" connection fittings.

SGT is one of the leading manufacturers of gas purification systems for chromatography. The SGT filter range is highly popular due to its ease of use and the Super Clean system, which allows for tool-free cartridge replacement without the risk of air entering the system. The most frequently sold SGT filters can be divided into several key categories:

1. SGT "Triple" Gas Purifiers

This is our absolute bestseller, as a single filter simultaneously removes the three main types of contaminants: oxygen, moisture, and hydrocarbons.

• Application: Carrier gases in gas chromatography (GC)
• Why they are popular: They provide comprehensive protection for both the column and the detector in a single, compact cartridge
• Helium-Specific Version: A specialized variant optimized for working with helium, particularly popular in GC-MS systems.

2. SGT Fuel Gas Purifiers

These filters are designed specifically for supplying flame ionization detectors (FID).

• Application: Purification of hydrogen and air for the burner
• Operation: They primarily remove moisture and hydrocarbons, which allows for a stable baseline and higher detector sensitivity.

3. SGT Standard Gas Purifiers

• Oxygen removal (Oxygen traps)
• Moisture removal (Moisture traps)
• Hydrocarbon removal (Hydrocarbon traps)

4. SGT High-Capacity Traps, Big-Traps

Frequently selected by laboratories with high gas consumption. These are available as separate cartridges dedicated to specific contaminants:

• Moisture Traps: Most commonly purchased as the first stage of protection.
• Oxygen Traps: Crucial for protecting column stationary phases from oxidation at high temperatures.
• Hydrocarbon Traps: Essential for trace analysis.

5. SGT Click-On In-Line Purifiers

This product line allows for the filter to be mounted directly on the gas line (without a fixed mounting base), which is convenient in tight spaces behind the instrument. Installation involves cutting the tubing and installing special quick-connect fittings (see diagrams below). The use of quick-connectors significantly streamlines the cartridge replacement process.

Scientific Glass Technology is a manufacturer of a wide range of filters (traps, scrubbers) for purifying compressed laboratory gases used in chromatography and research laboratories. SGT filters are available with 1/8" and 1/4" connection fittings.

Download SGT Click-On Inline Filters Brochure

Download a SGT Plate Gas Purification Brochure

Download SGT BigTraps Brochure

SGT GC Capillary Column Cutters

Achieving a clean, square cut is essential for maintaining the integrity of your chromatographic results. SGT Capillary Column Cutters are precision tools designed to provide a perfect 90° edge on fused silica columns, ensuring optimal peak shape and leak-free connections.

Key Features:

• Precision Cutting: Engineered to produce a clean, flat surface without jagged edges or burrs, which is critical for preventing peak broadening and ensuring a proper seal in the injector or detector.

• Ease of Use: The ergonomic design allows for effortless operation, making it easy to perform consistent cuts even in the confined spaces of a GC oven.

• High-Quality Blade: Features a durable cutting edge that maintains its sharpness over time, providing hundreds of clean cuts before requiring replacement.

• Universal Compatibility: Suitable for all standard fused silica capillary columns, regardless of the internal diameter or stationary phase.

Why Precision Matters:

A poor cut can lead to dead volume, activity at the column end, and non-reproducible retention times. Using a dedicated SGT cutter minimizes these risks and protects your analytical hardware from damage caused by glass fragments.

Catalogue no. of GC silica capillary cutters.: 

S0010 - for fused silica capillary GC columns

S0020 - for CE-CEC (capillary electrophoresis)

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