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Gas Chromatography (GC) is a powerful analytical technique used across many industries. Selecting the correct supplies is crucial for accurate, reproducible results and efficient laboratory operations. Investing in high-quality GC consumables ensures the longevity of your instrument and the integrity of your data.
SPE Polypropylene Column extraction can be used for the selective adsorption of analytes or interferents from complex matrices, such as sample cleanup and analyte concentration prior to liquid chromatography (LC), gas chromatography (GC), ion...
C18 SPE Columns Extremely retentive for nonpolar compounds.Effective for desalting aqueous mixtures
SPE Columns is a cost-effective alternative to liquid-liquid extraction. SPE offers increased throughput, reduced use of organic solvents and waste generation, higher and more reproducible recoveries, purer extracts, no emulsification, adjustable...
Widely used for sample cleanup, trace enrichment, desalting, solvent exchange, and sample preservation and storage. Increased utilization reduces instrument uptime and minimizes organic solvents and waste
2 ml Clear autosampler vial 30Pcs, 12 mm Diameter, 32 mm Height, 9-425 screw Cap & Septa (Red PTFE/White Silicone Liner). Our vials with caps are widely used in standard HPLC and GC applications.
Material: vial is made of neutral borosilicate glass, low coefficient of expansion, and high chemical resistance, Good heat resistance. It shows excellent chemical resistance to acidic and neutral solutions. Temperature range: -30 ℉ - 350 ℉.
Easy to distinguish: Writing patch for sample identification or labeling. Short-thread caps and vials require fewer turns to make a tight seal, saving time, especially considering how often vials need to be opened and closed, and how many samples you...
Strong Adsorption: The experiment blotting paper strips have good water absorption and chemical stability, and can produce clear pigment separation for easy to interpret readings, ensuring the accuracy and reliability of experimental results.
Proper Size: The size of each chromatography paper is measured approx. 6.3 inches / 16 cm in length, 0.79 inches/ 2 cm in width, and particle retention 110-15 μm, making it a idea size for carry out multiple experiments or widely used in teaching.
Premium Quality: Our chromatography filter papers is made of premium neutral cotton material, each piece has a flat surface, lightweight and compact, make it suitable for a variety of experimental scenarios, such as chemistry laboratory, laboratories...
Sufficient to Use: Our package provides 500pcs chromatography paper strips, enough to meet your experimental needs and other purposes without worry about the problem of insufficient quantity ,onvenient for you to complete your science experiments better.
✅LOW EXPANSION COEFFICIENT - 9mm Screw Thread Autosampler Vials are made of clear Type 1, Class A Borosilicate Glass with very low expansion coefficient. It shows excellent chemical resistance to acidic and neutral solutions, due to its relatively low...
✅9-425 SCREW VIALS - 2ml sample Vials with unique thread design ensures consistent seal and can be reused, not volatile, easy to use, Amber vial with large writing patch for sample identification.
✅PTFE/SILICONE SEPTA - 2ml Amber GC sample vials included blue ABS Screw Cap & Septa (Red PTFE/White Silicone Liner) This PTFE/Silicone septa with PTFE chemically inert before being penetrated and strongest repetitive sealing ability-recommended for...
Manufactured with blue 9-425 polypropylene open top ribbed 9 mm screw cap
HPLC caps diameter 9 mm, height 6.2 mm
9mm Bi-layer includes silicone and PTFE. PTFE Silicone septa for multiple injections. PTFE-lined screw cap for analytical organic samples, compatible with most autosampler vials
Suitable for gc, hplc, lcms 1.5 mL, 1.8 mL, 2 mL 9-425 vials
2 ml Amber autosampler vial, 12 mm Diameter, 32 mm Height, 9-425 screw top. Our vials with caps are widely used in standard HPLC and GC applications
Autosampler vials with unique screw design ensure the consistency of the seal. Blue polypropylene screw cap including silicon septa and PTFE ideal for compound sample storage in the chemical and pharmaceutical industry, and scientific research laboratory
The vial is made of borosilicate glass, low content of free ions, low coefficient of expansion, and high chemical resistance. It is suitable for containing all injectable preparations with acid, neutral and alkaline pH. Temperature range...
Amber vial with large writing patch for sample identification and white printed graduations in 0.5 ml increments
Last update on 2026-10-16 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Lab Chromatography GC Supplies
Understanding GC Consumables
Gas Chromatography relies on a variety of consumables to function effectively. These include columns, vials, septa, syringes, ferrules, and fittings. Each component plays a vital role in sample introduction, separation, and detection. The quality and compatibility of these supplies directly impact the performance and reliability of your GC system.
Choosing the Right GC Column
The GC column is the heart of the separation process. Key considerations include:
Phase Chemistry: Select a stationary phase based on the polarity of the analytes you intend to separate. Common phases include non-polar (e.g., polydimethylsiloxane) and polar (e.g., polyethylene glycol) options.
Dimensions: Column length, internal diameter, and film thickness influence resolution, speed, and capacity. Longer columns generally provide better resolution but increase analysis time.
Carrier Gas Compatibility: Ensure the column is suitable for your chosen carrier gas (helium, hydrogen, or nitrogen).
Vials, Septa, and Syringes for Sample Introduction
Accurate sample injection is paramount. When selecting these items, consider:
Vial Material and Volume: Glass vials are standard, but some applications may require inert materials. Choose a volume that accommodates your sample size and autosampler requirements.
Septa Properties: Septa must provide a good seal to prevent leaks and avoid contamination. Look for low-bleed materials that are compatible with your injection temperatures.
Syringe Type: Autosampler syringes have specific requirements for volume and needle gauge. Manual injection syringes offer more flexibility but require careful handling.
Fittings and Ferrules for a Leak-Free System
Leaks in the GC system can lead to inaccurate baselines and reduced sensitivity. Proper fittings and ferrules are essential:
Material: Stainless steel and graphite ferrules are common. Ensure compatibility with your column and detector.
Type: Compression fittings offer a secure seal. Ensure they are designed for the pressures and temperatures of your GC system.
Comparison Tips for GC Supplies
When comparing GC supplies, prioritize:
Manufacturer Specifications: Always check that the consumables meet the requirements of your specific GC instrument model.
Material Quality: Opt for high-purity materials to minimize background noise and contamination.
Batch-to-Batch Consistency: For critical applications, inquire about lot traceability and consistency.
Reviews and Recommendations: Consult with colleagues or review user feedback for insights into performance and reliability.
Frequently Asked Questions
What is the most critical GC consumable for separation?
The GC column is the most critical consumable for separation. Its stationary phase and physical dimensions determine the ability to resolve different compounds in a sample.
How often should GC septa be replaced?
GC septa should be replaced regularly, typically after a certain number of injections or when signs of wear, such as hardening or coring, are observed. This prevents leaks and sample contamination.
What are the common carrier gases used in GC?
The most common carrier gases used in GC are helium, hydrogen, and nitrogen. The choice of carrier gas can affect separation efficiency and analysis time.
Can I use any vial with my GC autosampler?
Not necessarily. Autosamplers have specific vial size and type requirements. Ensure the vials are compatible with your autosampler's tray and injection mechanism.
What does 'column bleed' mean in GC?
Column bleed refers to the release of stationary phase material from the GC column, which can create a high baseline signal. Low-bleed columns are essential for sensitive analyses.
Why is carrier gas purity important for GC?
Carrier gas purity is crucial because impurities can react with analytes, damage the column, or interfere with detector performance. High-purity gases ensure reliable and accurate results.
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