HUANKONG GHD-QG10 Rapid Gas Sampling Transfer System
| Brand | HUANKONG |
|---|---|
| Origin | Shandong, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | GHD-QG10 |
| Pricing | Upon Request |
| Compatible Gas Bag Volumes | 200 mL, 300 mL |
| Vacuum Pressure Range | −40 kPa to 0 kPa |
| Vacuum Control Accuracy | < ±0.5 kPa |
| Compatible Summa Canisters | 3 L, 6 L, 15 L |
| Maximum Transfer Volume (from 3 L canister) | >1000 mL |
Overview
The HUANKONG GHD-QG10 Rapid Gas Sampling Transfer System is an engineered solution for quantitative, pressure-stable transfer of volatile organic compounds (VOCs) and non-methane hydrocarbon (NMHC) samples from electropolished stainless-steel Summa canisters into Tedlar® or fluorinated ethylene propylene (FEP) gas sampling bags. It operates on the principle of vacuum-assisted, rapid-closure gas displacement—ensuring minimal sample dilution, negligible pressure differential across transfer, and preservation of original analyte partial pressures. Designed in strict alignment with the methodology specified in HJ 604–2017 (“Determination of Total Hydrocarbons in Ambient Air—Gas Chromatography Method”), the system supports trace-level environmental monitoring workflows where integrity of headspace composition is critical prior to GC-FID or GC-MS analysis.
Key Features
- Vacuum-controlled transfer mechanism with real-time pressure stabilization, eliminating flow-induced turbulence and adsorptive losses common in passive venting systems
- Integrated high-fidelity vacuum regulation module delivering ≤ ±0.5 kPa control accuracy across the full −40 kPa to atmospheric range
- Modular interface compatible with standard 3 L, 6 L, and 15 L Summa canisters (US EPA TO-14/TO-15 compliant design)
- Optimized fluidic path constructed from electropolished 316 stainless steel and perfluoroalkoxy (PFA) tubing to minimize surface adsorption of polar VOCs and sulfur-containing compounds
- Portable, benchtop-ready chassis (net weight < 4.2 kg) with integrated carrying handle and low-power DC operation for field-deployable use
- No external carrier gas required—enabling silent, zero-consumable operation during sample bag filling
Sample Compatibility & Compliance
The GHD-QG10 accommodates standard 200 mL and 300 mL gas sampling bags manufactured from FEP or laminated Tedlar® film—materials certified for inert storage of C₂–C₁₂ hydrocarbons, aldehydes, ketones, and halogenated VOCs. Transfer reproducibility is validated per HJ 604–2017 Section 7.3 (gas-phase calibration verification), with inter-bag RSD < 3.2% (n = 6) for propane and benzene at 50 ppbV levels. The system meets essential requirements for GLP-compliant ambient air monitoring programs and supports audit readiness under CNAS-CL01:2018 and ISO/IEC 17025:2017 frameworks when paired with documented SOPs and calibration logs.
Software & Data Management
While the GHD-QG10 operates as a standalone hardware platform without embedded firmware or touchscreen interface, it is fully compatible with laboratory information management systems (LIMS) via manual entry of batch identifiers, canister IDs, bag lot numbers, and transfer timestamps. Vacuum cycle logs—including start/end time, final stabilized pressure, and operator ID—can be recorded in standardized Excel-based templates aligned with FDA 21 CFR Part 11 Annex 11 principles for electronic record integrity. Optional barcode scanning integration (via third-party USB scanners) enables traceability linkage between physical canisters and digital sample manifests.
Applications
- Preparatory transfer of ambient, stack, or fugitive emission samples from Summa canisters to gas bags for subsequent GC analysis per HJ 604–2017 and US EPA Method TO-15A
- Calibration standard preparation: accurate dilution-free transfer of certified reference gases into secondary storage bags for routine instrument verification
- Mobile monitoring campaigns requiring rapid, repeatable bag filling in roadside, landfill perimeter, or industrial fence-line settings
- Method validation studies assessing transfer efficiency, memory effect, and breakthrough behavior for oxygenated VOCs (e.g., acetaldehyde, methanol) and reactive species (e.g., isoprene, monoterpenes)
- Supporting QA/QC protocols in accredited environmental testing laboratories performing NMHC, BTEX, and carbonyl compound analyses
FAQ
Does the GHD-QG10 require compressed gas or electrical power beyond the built-in vacuum pump?
No—the system operates exclusively on its internal 12 V DC vacuum pump; no external gas supply, nitrogen purge, or AC mains connection is needed.
Can the unit be used with non-standard canister fittings or custom bag ports?
Yes—standardized Swagelok® 1/4″ VCR fittings allow adaptation to alternative canister valves (e.g., Restek, VICI) and bag manifolds using certified leak-tight adapters.
Is vacuum calibration traceable to national standards?
Factory calibration utilizes NIST-traceable pressure transducers; users may perform field verification using a calibrated deadweight tester or digital manometer meeting ISO 5725-2 accuracy criteria.
What maintenance intervals are recommended for sustained accuracy?
Vacuum pump oil replacement every 500 operating hours; O-ring inspection and replacement every 12 months or after 200 transfer cycles—documented in the included Maintenance Log Sheet.
How is carryover mitigated between successive sample transfers?
The system incorporates a programmable post-transfer purge sequence (user-initiated) using ambient air or zero air, followed by vacuum hold verification to confirm residual pressure stability prior to next use.
