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HomeBlogsA Buyer’s Guide to ILT’s GC Supplies
A Buyer’s Guide to ILT’s GC Supplies

Selecting the right GC (gas chromatography) supplies can determine both the accuracy of results and the efficiency of lab workflows. From sample introduction to detection, every component can affect performance. This guide is designed to help lab managers and procurement specialists evaluate options methodically so that every purchase supports reliable analysis and operational efficiency.

Core Product Categories

Labs typically evaluate these main categories of Gas Chromatography supplies:

  • GC vials and caps
  • GC consumables
  • GC accessories
Sealed gas chromatography sample vials arranged in an autosampler tray

Evaluating GC Supplies by Type

When assessing GC supplies, a few key factors consistently influence performance and reliability. Consider:

  • Compatibility: Supplies should match the instruments and applications in use.
  • Material quality: High-purity materials reduce contamination and extend component life.
  • Sealing and fit: Proper sealing prevents evaporation, leakage, or sample loss.
  • Ease of use: Practical handling and assembly can reduce errors and improve lab throughput.
  • Reproducibility: Consistent performance across batches ensures reliable results.

Here’s how these factors apply to each category:

GC Vials and Caps

Vials and caps protect sample integrity and prevent contamination. Key considerations include sealing reliability, material quality, and appropriate size and type for the intended application. 

GC Consumables

Consumables such as septa, syringes, and filters are used repeatedly and can directly affect reproducibility and data quality. Labs should evaluate bleed resistance, durability, and compatibility with sample types. 

GC Accessories

Accessories support efficient workflows and accurate analyses, including sample handling tools, injection aids, and maintenance items. Important factors include ergonomics, material quality, and compatibility.

Advantages of ILT GC Supplies

ILT offers a broad range of GC products designed to meet the needs of labs across routine and high-sensitivity applications. Key product types include:

ILT products are organized by Level designations, which indicate the degree of low-bleed performance for different applications:

  • Level 1: Standard low-bleed products suitable for general GC and LC workflows.
  • Level 3: Designed for GC/MS and LC/MS methods, including sensitive headspace and 24 mm EPA caps, to minimize interference from volatiles.
  • Level 4 (UM4): Ultra-premium, certified low-bleed products for the cleanest performance in highly sensitive analyses.
Gas chromatography sample vials and screw caps in different materials and sizes

How to Choose the Best GC Supplies

A straightforward approach can help labs make confident purchasing decisions:

  1. Identify the critical requirements for your applications (temperature, solvent type, sample volume).
  2. Compare options on material quality, compatibility, and reliability.
  3. Consider long-term performance and ease of handling, not just initial cost.
  4. Prioritize suppliers who provide clear documentation, support, and quality assurance.

Selecting the right GC supplies is more than a routine procurement decision; it directly impacts the accuracy, efficiency, and reproducibility of your lab work. Use this guide to evaluate options thoughtfully and choose products that support consistent, reliable results.

ILT is a trusted supplier of best selling GC supplies, including vials, caps, liners, and consumables manufactured for accuracy, reliability, and reproducibility. Our products are made in the USA, ensuring high-quality manufacturing and consistent performance. Explore ILT’s full product catalog to find the right GC solutions for your lab’s specific needs and applications.

Learn more about ILT, the world leader in manufacturing seals and septa.