Gas Chromatography (GC) is a powerful analytical technique, and the stationary phase within the column is critical for successful separations. For specific applications requiring the resolution of non-volatile or thermally labile compounds, a PLOT (Porous Layer Open Tubular) column offers unique advantages. Selecting the appropriate PLOT column ensures accurate and reproducible results in demanding laboratory environments.
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To help you make the best choice among the hundreds of products available, we have decided to offer you a comparison of the Lab Chromatography GC PLOT Columns in order to find the best quality/price ratio. In this ranking, you will find products listed according to their price, but also their characteristics and the opinions of other customers. Also discover our comparisons by categories. You won’t have to choose your products at random anymore.
- Chromatography column
- 24/40 Joint; G2 40~80 μm Nominal Max. pore size
- With Fritted Disc and PTFE Stopcock
- 25mm in column O.D. And 203mm in effective length
- StonyLab ensures premium products and premium customer service; if received damaged, please contact us immediately; we will solve it until satisfied
- Glass chromatography column with sintered disc, ideal for in-column operations in chemical experiments
- 30mm column O.D. and 300 mm effective length
- Standard 24/40 taper outer joint at the top, equipped with a fritted disc and a PTFE stopcock
- Made of high borosilicate glass, featuring a thick-walled design for reusability; maximum withstand temperature 250°C
- Warranty: Labasics 1-year limited warranty; if received damaged, please contact us immediately; we will solve it until satisfied
- Bundle includes: 1 x glass chromatography column, 1 x 500 mL glass chromatography reservoir
- The glass chromatography column is made of borosilicate glass with a 24/40 standard joint, PTFE stopcock, and fritted disc, effective column length 11.8 inches, column O.D. 1.97 inches
- The 500 mL chromatography reservoir is corrosion resistant, transparent for easy observation, facilitating fluid storage and control
- This bundle is suitable for separation experiments, research, and educational applications involving liquid handling and chromatography
- Warranty: 1-year coverage period for your peace of mind, if received damaged, please let us know and we will solve it promptly
- Chromatography column.
- 24/40 Joint; G2 40~80 μm Nominal Max. pore size.
- With Fritted Disc and PTFE Stopcock.
- 45mm in column O.D. And 485mm in effective length.
- If received damaged, please let us know and we will solve it promptly.
- High-Precision Chromatography Column: features a 1 inch inner diameter and 8 inch effective length, equipped with a 24/40 standard taper upper joint for secure connections
- G2 Sand Plug at Base: includes a G2 sand plug with a sand core aperture of 0.0016-0.0031 inch at the column's base, ensuring efficient separation of complex mixtures
- Durable Borosilicate Glass Construction: made from G3.3 borosilicate glass, known for its high thermal resistance and chemical inertness, ensuring durability and reliability in laboratory settings
- PTFE Valve: features a polytetrafluoroethylene (PTFE) valve for precise control over flow and separation processes, suitable for separating mixed samples containing various organic compounds
- Warranty: stonylab 1-year limited warranty; if received damaged, please contact us immediately; we will solve it until satisfied
- 40mm column O.D. and 300mm effective length
- 24/40 standard taper top outer joint
- With fritted disc and PTFE stopcock
- G3 15 - 40 μm Nominal Max. Pore Size
- Made by hand-blowing to ensure achieving the best performance
- Designed to help separate liquid chemical compounds.
- 1. Use a disposable syringe to draw 5 mL of chromatographic pure methanol and push it into the C18 cartridge at a flow rate of 2~4 mL/min.
- 2. Use a disposable syringe to draw 10mL of secondary deionized water and push it into the C18 cartridge at a flow rate of 2~4mL/min.
- 3. The C18 cartridge should be placed flat for 20 minutes to ensure its full activation.
- 4. Use a disposable syringe to draw the sample solution, push it into C18 at a flow rate of 2~4mL/min, and discard the first 3mL.
- 5. Collect the following liquid, combine it with a syringe filter, and directly enter the ion chromatography for analysis, or transfer it to a sample bottle for sample injection analysis through an autosampler.
- Durable Column Chemistry：Features a dense, stable silane bonding phase with advanced endcapping
- Guaranteed Performance：Each column is rigorously tested
- Complete Ready-to-Use Solution：For optimal performance, pair with our matching guard column
- Large-capacity chromatography column with integrated 500 mL reservoir for flash and preparative chromatography on a 24/40 system.
- 46 mm outer diameter and approximately 305 mm effective bed length provide a generous packing volume for larger preparative separations.
- Built-in reservoir allows convenient solvent and sample loading for long runs and higher sample loads.
- PTFE stopcock at the outlet offers smooth, precise control of solvent flow; wetted surfaces are PTFE and borosilicate glass to resist common solvents.
- Intended for gravity or low-pressure flash chromatography under modest positive pressure; column must be clamped securely and used in a fume hood behind a safety shield. Stand, clamps and chromatography media are not included.
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Last update on 2026-03-30 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Lab Chromatography GC PLOT Columns
Understanding PLOT Columns
PLOT columns are a type of open tubular GC column that features a porous layer coated onto the inner wall of the capillary. Unlike packed columns, they offer higher efficiency and lower pressure drops. The porous layer is typically made of materials like alumina, silica, or molecular sieves, and its composition dictates the selectivity and application range of the column. These columns are particularly well-suited for analyzing gases, light hydrocarbons, and polar compounds.
Key Considerations for Selection
- Stationary Phase Material: The choice of stationary phase is paramount. Alumina-based phases are common for permanent gases and light hydrocarbons. Silica-based phases offer broader applicability, while molecular sieves are excellent for separating permanent gases based on size exclusion.
- Column Dimensions: Inner diameter (ID), length, and film thickness influence efficiency, capacity, and analysis time. Smaller IDs generally offer higher efficiency but lower sample capacity. Longer columns provide better resolution but increase analysis time and backpressure.
- Application Specificity: Identify the target analytes. For example, specific modifications to alumina phases exist for enhanced selectivity in petrochemical applications. For water analysis, a phase resistant to hydrolysis is essential.
- Carrier Gas Compatibility: Ensure the column is compatible with your chosen carrier gas (e.g., helium, hydrogen, nitrogen) and that the stationary phase is stable under typical operating conditions.
Maintenance and Handling
PLOT columns can be more sensitive to sample matrix effects and require careful handling to prevent damage to the porous layer. Proper conditioning procedures are crucial before initial use and after maintenance. Avoid injecting samples with high particulate loads or non-volatile residues, as these can foul the column. Regular checks of column performance and appropriate storage when not in use will prolong its lifespan and maintain analytical integrity.