SKC Chromosorb Sorbent Tubes

Overview

The SKC Chromosorb Sorbent Tubes are precision-engineered passive sampling devices designed for the quantitative collection and stabilization of volatile organic compounds (VOCs) and semi-volatile organic compounds (SVOCs) from ambient air, workplace atmospheres, and industrial exhaust streams. Based on the principle of adsorptive trapping via physical retention on high-surface-area polymeric sorbents, these tubes operate under standardized active or passive sampling protocols compliant with OSHA, NIOSH, and EPA methods—including Method 0031, TO-17, and ISO 16000-6. Chromosorb sorbents utilize thermally stable, non-polar or moderately polar porous polymer matrices that minimize analyte degradation, breakthrough, and artifact formation during storage and thermal desorption. Unlike carbon-based sorbents, Chromosorb materials exhibit low reactivity toward oxygen-sensitive or labile compounds—making them especially suitable for aldehydes, ketones, chlorinated hydrocarbons, and aromatic species such as benzene and toluene.

Key Features

• Two primary sorbent formulations: Chromosorb 102 (optimized for chlorinated pesticides and halogenated SVOCs) and Chromosorb 106 (engineered for low-boiling VOCs including C2–C6 hydrocarbons, BTEX, and reactive oxygenates)
• Hydrophobic polymer matrix with minimal polarity—functionally equivalent to Anasorb 727 but with enhanced batch-to-batch consistency and lower blank levels
• Available in multiple tube configurations: stainless steel or glass-bodied, dual-bed or single-bed formats, with end-caps and fritted separators meeting ASTM D5466 requirements
• Pre-conditioned and solvent-washed options (e.g., Chromosorb 106-UP) available to reduce background interference for ultra-trace analysis
• Thermally desorbable up to 320 °C without significant bleed or decomposition—compatible with all major TD-GC/MS and TD-GC/FID systems
• Individually packaged in sealed aluminum pouches with desiccant, traceable by lot number and certified for GLP-compliant field deployments

Sample Compatibility & Compliance

Chromosorb tubes support sampling across a broad concentration range—from sub-ppbv to ppmv levels—depending on flow rate, duration, and analyte affinity. Chromosorb 102 demonstrates high retention capacity for organochlorine pesticides (e.g., DDT, chlordane), PCB congeners, and polycyclic aromatic hydrocarbons (PAHs). Chromosorb 106 excels in capturing highly volatile and polar VOCs prone to hydrolysis or oxidation, including acetaldehyde, vinyl chloride, and methyl tert-butyl ether (MTBE). All tubes meet ISO/IEC 17025-accredited production controls and are validated per NIOSH BC 3000 and EPA Compendium Method TO-17 specifications. Tube dimensions and sorbent mass are selected to ensure adherence to breakthrough volume limits defined in ASTM D6196 and EN 1076 standards.

Software & Data Management

While Chromosorb tubes themselves are hardware-only passive components, they integrate seamlessly into regulated laboratory workflows governed by LIMS and chromatographic data systems (CDS) supporting 21 CFR Part 11 compliance. Sample metadata—including lot number, expiration date, pre-sampling conditioning status, and thermal desorption parameters—is recorded directly in instrument method files and audit-trail-enabled CDS platforms (e.g., Thermo Fisher Chromeleon, Agilent OpenLab ECM). SKC provides downloadable Certificate of Analysis (CoA) templates and batch-specific blank data sheets for inclusion in QA/QC documentation packages required under ISO 17025 and GMP-aligned environmental monitoring programs.

Applications

• Occupational hygiene monitoring per OSHA ID-215 and NIOSH 1501 for BTEX, styrene, and chlorinated solvents
• Indoor air quality (IAQ) assessment in commercial buildings and schools under ISO 16000-6 protocols
• Soil vapor intrusion studies targeting VOC migration from contaminated sites
• Stack emission testing for fugitive VOC releases in petrochemical and pharmaceutical manufacturing
• Method development and validation for emerging contaminants including fluorotelomer alcohols and short-chain chlorinated paraffins

FAQ

Are Chromosorb tubes compatible with automated thermal desorbers?
Yes—Chromosorb tubes conform to standard 1/4-inch OD dimensions and are certified for use with Markes UNITY, Gerstel TDSA, and PerkinElmer TurboMatrix systems.
What is the recommended shelf life after opening the sealed pouch?
Unopened tubes retain integrity for 24 months from manufacture date; once opened, use within 72 hours unless stored under inert gas in a desiccated environment.
Do Chromosorb 102 and 106 require different desorption temperatures?
Both sorbents are fully desorbed within 250–300 °C; however, Chromosorb 106 benefits from a 30-second hold at 280 °C to ensure complete elution of low-mass VOCs.
Can these tubes be reused after thermal desorption?
No—Chromosorb tubes are single-use, disposable devices. Reuse compromises analytical accuracy due to irreversible sorbent aging and residual carryover.
Is there a USP or Ph. Eur. monograph referencing Chromosorb materials?
While not cited directly in pharmacopoeial texts, Chromosorb 106 is widely accepted in pharmaceutical cleanroom monitoring per ISO 14644-8 and PDA Technical Report No. 80 for residual solvent verification.