Authorised Indian Distributor
Saxsons Group
New Delhi, India · Since 1997
High-Volume Air SamplerTotal-Filtration Iodine Air Configuration — Paper Filter + Dual Charcoal Cartridge
High-volume air sampler for radioactive aerosol and radioiodine sampling. Total-Filtration Iodine Air (TFIA) configuration draws sampled air through a 4-inch paper filter for particulates and then through two back-to-back 2-1/2-inch activated charcoal cartridges for I-131 / I-125 capture. The dual-cartridge arrangement gives a built-in collection-efficiency cross-check. Universal AC motor, vacuum-gauge flow monitoring, cast-aluminium filter holder. ANSI N13.1 / ISO 2889 stack-monitoring fit; ANSI N42.18 hot-lab fit; IAEA Safety Reports radioiodine air-sampling fit.
Key Features
- Total-Filtration Iodine Air (TFIA) configuration — particulates and radioiodines captured in series on a single sampler pass
- 4-inch (~100 mm) paper-filter stage for radioactive particulate aerosols upstream of the charcoal cartridges
- Dual back-to-back 2-1/2-inch activated charcoal cartridges (front + back) — front captures > 99 % of radioiodines; back catches anything that breaks through; cross-check confirms cartridge collection efficiency
- Universal AC motor delivers high-volume draw against the loaded-filter pressure drop
- Front-mounted vacuum gauge for live flow monitoring; flow drop indicates filter loading and signals changeout
All Features
- Total-Filtration Iodine Air (TFIA) configuration — particulates and radioiodines captured in series on a single sampler pass
- 4-inch (~100 mm) paper-filter stage for radioactive particulate aerosols upstream of the charcoal cartridges
- Dual back-to-back 2-1/2-inch activated charcoal cartridges (front + back) — front captures > 99 % of radioiodines; back catches anything that breaks through; cross-check confirms cartridge collection efficiency
- Universal AC motor delivers high-volume draw against the loaded-filter pressure drop
- Front-mounted vacuum gauge for live flow monitoring; flow drop indicates filter loading and signals changeout
- Cast-aluminium filter holder and motor housing — rugged for continuous indoor use, decontaminable wipe-down surfaces
- Carry handle and compact footprint — single-operator transport between sample stations
- Dual 115 V / 230 V variants for India + global deployment; standard IEC mains lead
- Operates standalone for short-duration grab samples OR with a timer for shift-long / 24-hour integrated samples
- Filter and cartridge media are radiation-counter compatible — collected sample goes straight to the gamma counter or proportional counter for assay
- Standard accessories: rotameter calibration kit, spare filter media + charcoal cartridges, sample-presentation jigs
- AERB cyclotron-facility radiation-protection fit; ANSI N13.1 / ISO 2889 stack-monitoring fit; ANSI N42.18 hot-lab fit
- Documentation: datasheet, calibration certificate, operator manual, AERB compliance paperwork
Technical Specifications
| Configuration | Total-Filtration Iodine Air (TFIA) — paper filter + dual back-to-back charcoal cartridges |
| Paper filter stage | 4-inch (~100 mm) diameter paper filter for particulate aerosols |
| Charcoal stage | Two 2-1/2-inch (~63 mm) diameter activated charcoal cartridges in series |
| Collection-efficiency cross-check | Front-cartridge activity ratio to back-cartridge activity confirms > 99 % cartridge efficiency per run |
| Motor | Universal AC motor; high-volume draw against loaded-filter pressure drop |
| Flow monitoring | Front-mounted vacuum gauge; flow drop indicates filter loading |
| Filter holder | Cast aluminium; decontaminable wipe-down surfaces; rugged for continuous indoor use |
| Electrical supply | 115 V / 230 V AC, 50 / 60 Hz variants; standard IEC mains lead |
| Operating mode | Manual standalone OR timer-controlled for shift-long / 24-hour integrated samples |
| Sample compatibility | Filter + cartridge media compatible with gamma counter, proportional counter and HPGe assay |
| Compliance framework | ANSI N13.1 / ISO 2889 stack monitoring; ANSI N42.18 air-sampling instrumentation; AERB cyclotron-facility air-monitoring expectations |
| Standard accessories | Rotameter calibration kit, spare filter media + charcoal cartridges, sample-presentation jigs |
Applications
High-volume air sampling — the assay-quality sample that verifies every inline monitor
Cyclotron stack effluent grab samples
Periodic high-volume grab samples on the cyclotron exhaust stack to verify continuous stack-monitor (GD-53-based PET-01-class instrument) readings. The air sampler collects an integrated filter + cartridge sample that goes to laboratory gamma assay; the cross-check anchors the inline stack monitor against a separate assay chain.
I-131 therapy room air monitoring
Continuous air sampling in I-131 therapy room and patient discharge bathroom. The charcoal cartridge captures volatile I-131; periodic cartridge counting tracks airborne radioiodine concentration against the AERB action threshold.
Hot lab air sampling — high-activity operations
Per-shift integrated air sampling during high-activity radiopharmacy operations (Lu-177 elution, F-18 target offload, Tc-99m generator change). Paper filter captures airborne particulates; cartridge captures any volatile radioiodines.
Contamination-incident response
Post-incident air sampling after a spill, broken vial or unsealed-source event. High-volume draw collects an assay-quality sample quickly; the dual-cartridge cross-check rules out false negatives from low cartridge efficiency.
HEPA filter integrity testing
Up- and down-stream sampling across HEPA filter banks in cyclotron and hot-lab exhaust. Filter-collected particulate activity quantifies HEPA bypass and ageing performance.
Environmental + perimeter monitoring
Site-boundary air sampling for AERB / state radiation-safety annual reports. Integrated 24-hour samples on the perimeter capture both routine release fingerprint and any incidental airborne activity.
Why High-Volume Air Sampler?
A single charcoal cartridge claims > 99 % radioiodine capture — but if the cartridge is exhausted or channelled, that claim fails silently. Two cartridges in series turn the claim into a measurement: front-cartridge activity ÷ (front + back) gives the per-run collection efficiency. The cross-check is on every sample, not on the calibration certificate alone.
Radioactive aerosols (particulates) and radioiodines (volatile gas / vapour) behave differently and need different collection media. The TFIA configuration puts both in series on a single sampler pass — one site visit, one operator action, two contaminant classes captured separately and assayed separately downstream.
AERB cyclotron-facility inspection and ANSI / ISO stack-monitoring frameworks both expect a high-volume grab-sample capability separate from the inline continuous monitor. The air sampler + assay chain is the standard answer; the cross-check between inline and grab anchors the release record.
Catalogs & Resources
ANSI / ISO / IAEA references that anchor the high-volume air-sampling workflow. Contact Saxsons for India pricing, install scheduling and AERB compliance paperwork.
ANSI N13.1 — Sampling and Monitoring Releases of Airborne Radioactive Substances from the Stacks and Ducts of Nuclear Facilities
US national standard for stack effluent sampling — defines grab-sample and continuous-monitor expectations and the role of paper-filter + charcoal-cartridge configurations.
ISO 2889 — General principles for sampling airborne radioactive materials
International standard defining stack and duct air-sampling design including isokinetic sampling requirements and collection-efficiency cross-check.
IAEA Safety Reports Series 38 — Applying Radiation Safety Standards in Nuclear Medicine
IAEA framework for nuclear-medicine radiation protection including airborne radioiodine monitoring expectations for I-131 therapy and hot-lab work.
ANSI N42.18 — Specification and Performance of On-Site Instrumentation for Continuously Monitoring Radioactivity in Effluents
US national standard for on-site effluent monitoring instrumentation; frames the role of high-volume grab samplers alongside continuous monitors.
High-Volume Air Sampler
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The assay-quality air sample that verifies the inline monitor
Contact Saxsons Group for air sampler air sampler supply, India install scheduling, consumable filter / cartridge inventory and AERB compliance paperwork.