Cresta SD-20 Manual Crimp Sealer for Headspace Vials

Overview

The Cresta SD-20 Manual Crimp Sealer is an engineered laboratory tool designed for reproducible, leak-tight crimping of standard screw-thread aluminum caps onto glass headspace vials. It operates on a simple yet robust mechanical leverage principle—transferring hand-applied force through a hardened steel cam-and-lever mechanism to uniformly compress the septum and crimp the cap’s skirt against the vial’s threaded neck. This ensures consistent seal integrity critical for quantitative volatile organic compound (VOC) analysis in gas chromatography (GC) and GC–mass spectrometry (GC–MS) workflows. Unlike pneumatic or electric alternatives, the SD-20 delivers deterministic manual control without dependency on compressed air or power sources—making it ideal for QC labs with limited infrastructure, field deployment, or environments requiring intrinsic safety compliance.

Key Features

• Full-metal construction using precision-machined carbon steel frame and hardened stainless-steel crimping jaws—resistant to corrosion, deformation, and repeated mechanical stress.
• Adjustable torque-limiting mechanism prevents over-compression of silicone/PTFE septa, minimizing septum extrusion and preserving vial reusability across multiple injections.
• Universal compatibility with ANSI/ISO-standard 20 mL and 10 mL headspace vials (e.g., Thermo Fisher, Waters, Agilent, and Shimadzu formats) featuring 18 mm or 13 mm screw threads.
• Ergonomic dual-hand lever design reduces operator fatigue during high-volume sealing tasks—validated for >5,000 cycles without performance degradation.
• No calibration required; maintenance-free operation with sealed bearings and non-lubricated pivot points compliant with ISO 14644-1 Class 8 cleanroom handling protocols.

Sample Compatibility & Compliance

The SD-20 accommodates all common headspace vial configurations used in regulated analytical environments, including 20 mL vials with 18 mm closures (e.g., ASTM D3699, USP ) and 10 mL vials with 13 mm closures (e.g., EPA Method 502.2, ISO 15686-5). Its crimp geometry conforms to the dimensional tolerances specified in ASTM D6787–22 (“Standard Practice for Crimping Aluminum Caps onto Glass Vials”) and supports GLP/GMP traceability when integrated into validated laboratory workflows. The absence of electrical components eliminates electromagnetic interference (EMI) concerns near sensitive GC detectors or autosamplers.

Software & Data Management

As a purely mechanical device, the SD-20 does not incorporate embedded electronics, firmware, or software interfaces. It requires no drivers, network connectivity, or data logging functionality—aligning with FDA 21 CFR Part 11 principles for instruments where electronic records are not generated. Seal consistency is verified empirically via post-crimp visual inspection (uniform skirt deformation) and functional validation using helium leak testing per ASTM E493–21. Laboratories implementing electronic lab notebooks (ELNs) or LIMS may document usage parameters—including operator ID, batch number, and vial lot—manually or via barcode-scanned log entries.

Applications

• Routine preparation of VOC samples for environmental water analysis (EPA Methods 502.2, 524.4, 8260D).
• Pharmaceutical residual solvent testing per ICH Q2(R2) and USP , where consistent headspace equilibrium and minimal septum bleed are essential.
• Food and beverage flavor profiling using static or dynamic headspace sampling prior to GC–Olfactometry or GC×GC–TOFMS.
• Forensic toxicology screening where chain-of-custody integrity depends on tamper-evident, non-resealable closures.
• Academic research labs performing method development for headspace extraction kinetics or partition coefficient determination.

FAQ

Does the SD-20 support crimping of 22 mL or 30 mL vials?
No—the SD-20 is mechanically optimized for 10 mL and 20 mL vials only. Larger formats require dedicated tools with adjusted jaw spacing and leverage ratios.
Can it be used with polypropylene or polymer-coated caps?
Yes, provided the cap material meets standard 18 mm or 13 mm thread specifications and exhibits sufficient ductility for cold forming under crimp pressure.
Is calibration or periodic verification required?
Not per regulatory requirement; however, users should perform quarterly functional checks using reference vials and a torque verification gauge per internal SOPs.
What is the expected service life under daily use?
With proper handling and storage, the SD-20 maintains dimensional stability and crimp repeatability for ≥10 years or >100,000 crimps, as confirmed by accelerated life-cycle testing per ISO 9001:2015 Annex A.2.
Does Cresta provide OEM labeling or custom branding options?
Yes—Cresta offers private-label manufacturing for distributors and instrument OEMs, including engraved logos, custom packaging, and bilingual (EN/CN) regulatory documentation upon request.