8mm Silver Magnetic Precision Screw Caps with Blue PTFE/White Silicone Septa (8mm Hole)

Optimize your automated Gas Chromatography (GC) and headspace analysis with these premium 18mm magnetic screw caps. Specifically engineered for modern robotic autosamplers, these caps provide a secure, twist-on seal while offering exceptional chemical resistance and reliable needle penetration.

📌 PREMIUM FEATURES & PRACTICAL APPLICATIONS:

• Magnetic Robotic Pickup: Manufactured with a silver metal/magnetic cap, making it perfectly compatible with automated headspace instruments that utilize robotic magnetic transport arms.

• Autosampler Optimized (8mm Hole): Features a precision-cut 8mm open center hole, providing an ideal target area for autosampler needles to penetrate smoothly without bending.

• Ultimate Chemical Resistance: The blue PTFE layer directly faces the sample, acting as a highly inert barrier against aggressive solvents, acids, and volatile chemical compounds.

• Superior Resealability: The white silicone backing provides outstanding elasticity. It automatically and effectively reseals the puncture hole immediately after needle extraction, preventing sample evaporation during analysis.

⚙️ DETAILED TECHNICAL SPECIFICATIONS:

• Product Type: Magnetic screw cap with pre-assembled septa

• Closure / Neck Finish: 18mm Precision Screw Headspace

• Cap Material: Silver Metal (Magnetic)

• Septa Construction: Blue PTFE / White Silicone

• Design Profile: Open top with an 8mm center hole

• Compatibility: Exclusively designed to fit standard 18mm precision screw headspace vials. Ideal for automated headspace instruments.

💡 AVAILABLE BULK PACKAGING OPTIONS: We offer flexible wholesale packaging to suit your laboratory's specific throughput needs. Please carefully select your required quantity from the variation menu:

• 300 pcs (Ideal for small-scale or specialized testing)

• 500 pcs (Standard choice for routine daily analysis)

• 1000 pcs (Best value for high-throughput testing facilities)

⚠️ IMPORTANT PURCHASING NOTES:

• Accessories Not Included: You are purchasing the magnetic screw caps with pre-assembled septa only. Headspace vials are strictly sold separately unless explicitly listed as a bundle.

• Strict Safety Restriction: Approved strictly for laboratory research and analytical use only. Do not use for any medical injection, clinical, or hypodermic purposes under any circumstances.