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Home Product Chromatography Injection Vial 40ml Headspace Cap PTFE/Silicone Septum HPLC/GC Certified Pre-slit
Chromatography injection vial headspace cap 40 ml

Chromatography Injection Vial 40ml Headspace Cap PTFE/Silicone Septum HPLC/GC Certified Pre-slit

Chromatography headspace vial caps 40ml
GC headspace injection caps 40ml
40ml HPLC vial septa closures
Chromatography injection vial headspace cap 40 ml
Chromatography headspace vial caps 40ml for GC headspace injection systems and HPLC vial septa closures. High-quality 40ml caps ensure secure sealing, contamination-free sample integrity, and compatibility with chromatography workflows.
Categories:Lab Supplies
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Product Description

Chromatography headspace vial caps 40ml, also known as GC headspace injection caps 40ml or 40ml HPLC vial septa closures, are specialized sealing components designed for precise analytical applications. These caps feature a PTFE/silicone septum optimized for high-temperature resistance (-50°C to 300°C) and chemical inertness, ensuring compatibility with volatile organic compound analysis in GC and HPLC systems. The caps accommodate standard 40ml vials and maintain hermetic seals under pressures up to 30 psi. Their ultra-thin design minimizes dead volume while supporting repeated needle penetrations without leakage. Widely used in pharmaceutical, environmental, and food safety testing, these closures offer excellent compatibility with autoclave sterilization cycles. Key advantages include low bleed characteristics for sensitive detectors and batch-to-blot consistency, though prolonged exposure to extreme temperatures may marginally reduce septum longevity. The caps integrate seamlessly with automated headspace samplers and manual injection systems alike, featuring a standardized 20mm neck diameter for universal vial compatibility.
Parameter Specification
Material Composition Silicone/PTFE-coated septum
Vial Neck Diameter 18 mm ±0.2 mm
Cap Height 11.5 mm ±0.3 mm
Temperature Resistance -40°C to 260°C (GC/HPLC compatible)
Pre-slit Option Laser-precut for multiple injections
Chemical Compatibility Organic solvents, acids (pH 1-12), bases
Septum Thickness 1.8 mm ±0.1 mm
Headspace Volume Optimized for 40ml vial geometry
Torque Requirement 8-10 in-lb (crimp cap tightness)
Sterilization Gamma-irradiated or autoclave-ready
question:What payment methods do you accept?
answer:We accept TT, PayPal, and other mainstream payment methods.
question:Why choose your company?
answer:Leading Asian trader in industrial automation, 20+ years of expertise, reliable quality, strong reputation, 85% repeat clients.
question:Do you provide technical selection support?
answer:Yes, our expert team offers comprehensive technical selection guidance.
question:Can the company ensure stable product supply?
answer:Yes, we maintain long-term partnerships and strict inventory management.
question:Why is there a transaction fee?
answer:The fee covers payment processing and administrative costs for secure transactions.
question:What payment methods do you accept?
answer:We accept TT, PayPal, and other mainstream payment methods.
question:Why choose your company?
answer:Leading Asian trader in industrial automation, 20+ years of expertise, reliable quality, strong reputation, 85% repeat clients.
question:Do you provide technical selection support?
answer:Yes, our expert team offers comprehensive technical selection guidance.
question:Can the company ensure stable product supply?
answer:Yes, we maintain long-term partnerships and strict inventory management.
question:Why is there a transaction fee?
answer:The fee covers payment processing and administrative costs for secure transactions.
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