Import 24-400 Screw Neck Storage Vial — Buy in wholesale FOB from Supplier in China

These ND24 EPA screw neck storage vials from Quzhou Lab Technology Co., Ltd are manufactured for 20-60 mL sample storage and chromatographic applications requiring reliable seal integrity across broad temperature ranges. The 24-400 thread format with 24 mm outer diameter and approximately 0.635 mm pitch accepts matched polypropylene caps in black or white, with options for closed-top or centre-hole configurations. The closure system employs 22 mm diameter, 3 mm thick PTFE/silicone septa that deliver chemical inertness and resealability for multiple injections. Quzhou Lab Technology specifies temperature resistance from -60 °C to 200 °C for the assembled vial-cap system, suitable for freezer storage through autoclave sterilisation cycles. The vials are offered in clear and amber glass variants, with amber providing UV protection for light-sensitive analytes.

The PTFE-facing on the septa provides near-universal chemical compatibility against aggressive organics, strong acids, and bases, while the silicone backing supplies elastomeric recovery for repeated needle punctures. The centre-hole cap option permits direct autosampler access without removing the closure, reducing evaporation and contamination during high-throughput sequences. Closed-top caps serve archival storage and transport where sample integrity over extended periods is paramount. The polypropylene cap body resists cracking and delivers consistent thread torque across the specified temperature range. The EPA designation indicates conformity to Environmental Protection Agency protocols for volatile organic compound sampling, though buyers should verify specific EPA method compliance, such as VOA vial standards for Methods 8260 or 5035.

Target buyers include environmental testing laboratories, pharmaceutical stability programmes, petrochemical QC facilities, and food safety regulators requiring vOA-compliant sample containers. The 20-60 mL capacity range accommodates single-point samples through composite collection over 24-hour monitoring periods. OEM and private-label clients are served, with the supplier citing four years of custom manufacturing experience. No stated MOQ applies to standard catalogue items, though buyers should confirm whether this extends to custom colours, printed labelling, or modified septa compositions. Volume resellers and end-users alike should validate cap torque consistency, septa retention force, and glass hydrolytic resistance against their specific analytical methods before bulk commitment.

Quzhou Lab Technology Co., Ltd operates from No.158 East Huayuan Road, Quzhou 324000, Zhejiang Province, China. The supplier holds a Harbor trust tier and maintains a stated inventory of five million units for 24-hour dispatch on regular orders. The company claims ISO certification for its quality management system, CE marking on products, and SGS test report availability upon request. Four years of OEM experience are cited, along with a one-year product warranty. The profile also states 24/365 sales and technical support with a two-hour issue resolution target, and offers free samples under supplier cost.

The available profile does not disclose establishment year, registered capital, factory floor area, employee count, annual revenue, or named clients. The claim of over 2,000 laboratory consumable SKUs suggests broad catalogue distribution rather than specialised manufacturing depth, though this cannot be independently verified from the data provided. The zero percent response rate and zero response hours on the platform contrast with the stated 24/365 support commitment, indicating that direct channels may be more reliable. Buyers should independently verify ISO certificate scope, CE certificate numbers and notified bodies, and request actual SGS reports with matching product codes rather than generic documentation.