Ontech800 SUMMA Canister

Overview

The Ontech800 SUMMA Canister is a high-purity, passivated stainless-steel sampling vessel engineered for the quantitative collection, transport, and storage of ambient and source-emission air samples containing volatile organic compounds (VOCs), reactive sulfur- and nitrogen-containing species, and polar analytes—including aldehydes, alcohols, esters, ketones, and ethers. Based on the design principles established by the U.S. EPA’s TO-14A/TO-15 protocols and aligned with HJ 759–2023 (Determination of VOCs in Ambient Air by Canister Sampling Coupled with GC-MS), the Ontech800 employs electropolished 316L stainless steel construction and proprietary silanization-based surface passivation to minimize analyte adsorption, catalytic degradation, and memory effects. Its inert internal surface ensures high recovery (>95% for C2–C12 hydrocarbons, >90% for reactive species such as H₂S, CH₃SH, and formaldehyde under controlled sampling conditions), making it suitable for regulatory-grade monitoring programs requiring trace-level accuracy and long-term sample stability (up to 30 days at 4 °C, per HJ/T 194–2005).

Key Features

• Body material: Electropolished ASTM A269 Grade 316L stainless steel—resistant to corrosion, thermal cycling, and mechanical fatigue.
• Internal surface treatment: Dual-stage inertization—alkaline cleaning followed by vapor-phase dimethyldichlorosilane (DDS) derivatization—yielding sub-nanogram-level blank values for target VOCs.
• Valve assembly: Integrated, maintenance-free, low-dead-volume (≤0.15 mL) brass or stainless-steel valve with PTFE-sealed diaphragm; rated for ≥10,000 actuations and compatible with standard canister crimping tools.
• Interface standard: 1/4″ NPT male thread (per EPA/ISO specifications), ensuring full interoperability with automated sampling systems (e.g., Markes UNITY-xr, Entech 7100), laboratory pre-concentrators (e.g., Entech 7200, Markes CryoTrap), and GC-MS inlet manifolds.
• Pressure rating: Certified to 30 psig service pressure with burst pressure ≥120 psig (ASME B31.3 compliant design basis).

Sample Compatibility & Compliance

The Ontech800 supports stable storage of thermally labile and highly reactive compounds—including hydrogen sulfide, methyl mercaptan, acrolein, vinyl chloride, and nitromethane—without significant loss or artifact formation. It meets the material and performance requirements outlined in HJ 759–2023, HJ 1012–2018 (for NMHC reference gas storage), HJ 1078–2019 (for sulfur organics), and GB/T 14678–1993. Its manufacturing and passivation process adheres to GLP-aligned quality control documentation, including batch-specific certificate of analysis (CoA), blank testing reports (n ≥ 3 per lot), and traceable calibration against NIST-traceable standards. All units undergo helium leak testing (<1×10⁻⁸ atm·cm³/s) and are shipped under positive nitrogen purge.

Software & Data Management

While the Ontech800 itself is a passive sampling device, its integration into digital environmental monitoring workflows is supported through compatibility with LIMS platforms (e.g., Thermo Fisher SampleManager, LabVantage) and field data capture applications (e.g., EPA’s AirData Mobile, custom Android/iOS apps). When used with automated samplers equipped with onboard logging (e.g., Teledyne API 400 series, Thermo Fisher iQ Air), time-stamped pressure, temperature, flow rate, and GPS metadata are automatically associated with each canister ID. Full audit trail capability—including chain-of-custody records, valve actuation logs, and lab analysis links—is maintained in accordance with ISO/IEC 17025 and FDA 21 CFR Part 11 requirements when deployed within accredited laboratories.

Applications

• Ambient air monitoring networks: National, regional, and urban air quality stations conducting daily or integrated sampling per HJ/T 194–2005 and China’s “Three-Year Action Plan for Blue Sky Defense.”
• Source emission characterization: Stack and fugitive emission sampling from petrochemical plants, pharmaceutical facilities, coating operations, and wastewater treatment plants.
• Fenceline monitoring: Real-time or periodic grab sampling for odorant and VOC screening around industrial perimeters (aligned with GB 37822–2019 and local odor management regulations).
• Laboratory reference gas preparation: Dilution and storage of certified calibration mixtures for GC-MS, PTR-MS, and SIFT-MS instrumentation.
• Method validation and inter-laboratory comparison studies: Used in proficiency testing programs administered by CNAS-accredited institutions under CNAS-CL01:2018.

FAQ

What is the recommended maximum storage duration for samples collected in the Ontech800 canister?

Samples should be analyzed within 30 days when stored at 4 °C and protected from light; for reactive species (e.g., aldehydes, H₂S), analysis within 72 hours is advised per HJ 759–2023.
Is the Ontech800 compatible with EPA Method TO-15A and EU standard EN 13649-2?

Yes—the geometry, material grade, passivation protocol, and interface dimensions comply with both standards’ physical and inertness requirements.
Can the canister be reused, and what is the recommended cleaning procedure?

Yes, up to 200 cycles when cleaned via EPA-recommended protocols: evacuation to <10 mTorr, baking at 150 °C for 4 hours under dry nitrogen purge, followed by re-passivation and blank verification.
Does the Ontech800 require certification prior to use in regulatory monitoring?

While not individually certified, each production lot is accompanied by CoA, leak test report, and passivation validation data—sufficient for acceptance in provincial EIA and MEE-mandated monitoring projects.
What accessories are required for field deployment?

Standard accessories include a calibrated vacuum pump (≤10 mTorr ultimate vacuum), pressure gauge (±0.1 psi), NPT-compatible regulator, and insulated transport case with shock-absorbing foam.