Supelco 57330-U / 57311 Manual SPME Fiber Holder for GC and HPLC Applications

Overview

The Supelco 57330-U / 57311 Manual Solid Phase Microextraction (SPME) Fiber Holder is a precision-engineered, laboratory-grade sampling interface designed for reproducible, solvent-free extraction and direct thermal desorption of analytes into gas chromatography (GC) or high-performance liquid chromatography (HPLC) systems. Based on the fundamental principle of equilibrium partitioning—where analytes distribute between a sample matrix (liquid, headspace, or solid) and a coated fused-silica fiber—the holder serves as a robust mechanical platform that positions, protects, and precisely controls fiber exposure during both extraction and desorption phases. Its syringe-like form factor integrates seamlessly into manual workflows, enabling consistent fiber deployment depth, reproducible insertion geometry into GC injection ports, and reliable fiber retraction to prevent coating damage during handling or storage. As part of the broader Merck KGaA (Sigma-Aldrich/Supelco) SPME ecosystem, this holder conforms to established analytical protocols referenced in ASTM D7726, ISO 17931, and USP for residual solvent analysis, ensuring method transferability across regulated environments.

Key Features

• Adjustable-depth sleeve mechanism for precise control of fiber extension length—critical for method reproducibility and accurate positioning within GC inlet heated zones (e.g., split/splitless injectors)
• Locking collar design secures the fiber in fully extended or fully retracted configuration, minimizing unintended movement during sampling or transport
• Stainless-steel outer housing with chemically inert internal components ensures long-term durability and resistance to solvent exposure and thermal cycling
• Universal compatibility with all Supelco SPME fibers (e.g., 7 µm PDMS, 65 µm PDMS/DVB, 85 µm Carboxen/PDMS, 50/30 µm DVB/CAR/PDMS), supporting broad analyte polarity and volatility ranges
• No consumable parts—designed for indefinite reuse with only the fiber requiring periodic replacement per analytical requirements
• Ergonomic grip and tactile feedback support repeatable manual operation across multi-user laboratory settings

Sample Compatibility & Compliance

The 57330-U / 57311 holder supports direct immersion (DI-SPME) and headspace (HS-SPME) sampling modes across aqueous, organic, semi-solid, and gaseous matrices. It accommodates standard 4 mL and 15 mL crimp-top or screw-cap vials—compatible with widely used SPME sampling stands (e.g., Supelco 57333-U, 57357-U). When deployed in GLP- or GMP-regulated laboratories, the holder’s mechanical consistency contributes to meeting FDA 21 CFR Part 11 data integrity expectations when paired with compliant chromatographic data systems (CDS). Its use aligns with ICH Q2(R2) guidance on analytical procedure validation, particularly for parameters such as repeatability and intermediate precision in extraction efficiency.

Software & Data Management

As a hardware-only component, the 57330-U / 57311 holder does not include embedded firmware or software. However, it is fully interoperable with chromatographic data systems (CDS) from Agilent, Thermo Fisher, Shimadzu, and Waters when integrated into validated SPME-GC or SPME-HPLC methods. Method documentation—including fiber type, exposure time, temperature, agitation parameters, and desorption conditions—must be recorded manually or via CDS method templates to ensure full audit trail compliance. Laboratories implementing electronic lab notebooks (ELN) may map holder usage against fiber lot numbers and calibration records to support traceability under ISO/IEC 17025 accreditation requirements.

Applications

• Volatile organic compound (VOC) analysis in environmental water and soil extracts (e.g., BTEX, chlorinated solvents)
• Residual monomer and solvent quantification in pharmaceutical excipients and polymer formulations
• Flavor and fragrance profiling in food, beverage, and cosmetic matrices using 50/30 µm DVB/CAR/PDMS fibers
• Analysis of polar amines and nitroaromatic compounds in wastewater using 65 µm PDMS/DVB fibers
• Headspace sampling of degradation products in stability-indicating assays per ICH Q1 guidelines
• Method development for SPME-LC-MS workflows where thermal desorption is replaced by solvent elution

FAQ

Is the 57330-U / 57311 holder compatible with autosamplers?
No—this is a manual-only holder. For CombiPAL™ or other CTC autosampler integration, Supelco recommends model 57331 (automatic version) or dedicated autosampler-specific holders.
Can the same holder be used with both GC and HPLC SPME fibers?
Yes—mechanical design is identical across fiber types; compatibility depends solely on fiber dimensions and coating chemistry, not the analytical platform.
What maintenance is required for long-term reliability?
Rinse with appropriate solvents (e.g., methanol, acetone) after each use to remove matrix residues; inspect O-rings periodically for compression set; no lubrication or recalibration is necessary.
Does the holder affect fiber lifetime or extraction efficiency?
When operated within specified extension limits and thermal desorption parameters, the holder introduces no measurable bias—its role is strictly mechanical positioning and protection.
Are there regulatory references supporting its use in validated methods?
Yes—numerous peer-reviewed publications and pharmacopeial monographs (e.g., USP , EP 2.4.24) cite Supelco SPME holders as integral components of validated extraction procedures.