# Iodine Air Systems

> Iodine Air Systems (iodineairsystems.com) is a US supplier of nuclear air filtration equipment, nuclear-grade radioiodine carbon and consumables, carbon test equipment and testing, and IAS-T tritium monitors. A service of SortLease LLC, 30 N Gould St Ste R, Sheridan, WY 82801, USA. Contact: sales@iodineairsystems.com.

## Free engineering tools
- [Radionuclide DAC/ALI lookup](https://iodineairsystems.com/tools/radionuclide-dac-ali-lookup/): searchable copy of U.S. NRC 10 CFR 20 Appendix B Table 1 (1,372 rows, 760 radionuclides) — oral ingestion ALI, inhalation ALI and DAC by radionuclide and class (D/W/Y), with organ and stochastic-ALI notes as printed; converters for DAC µCi/mL ↔ Bq/m³ (1 µCi/mL = 3.7×10^10 Bq/m³), concentration → DAC fraction and DAC-hours (2,000 DAC-hours = 1 ALI ≈ 5 rem CEDE), and ALI µCi ↔ Bq/MBq; reference tool only — verify against the current CFR and facility licence/RSO
- [Air purification system sizing calculator](https://iodineairsystems.com/tools/air-purification-system-sizing/): airflow (CFM = volume ft³ × ACH ÷ 60, m³/h = volume m³ × ACH) with ACH presets by nuclear task (4 surveillance to 16 tritium/volatile) and hospital isolation (12 ACH, CDC), 25/35/50% margin; units of IAS-NC700-HI (700 CFM, ≈0.14 s carbon residence) or IAS-NC500-HI-CUSTOM (500 CFM, 0.25 s); carbon bed volume = airflow × residence time, ≈0.40 kg/L (≈20 kg per 50 L drum); round duct diameter from velocity, friction Δh = 0.109136 q^1.9 / d^5.02 in. w.g. per 100 ft; fan kW = Q × ΔP ÷ η, next standard motor size; pressure-gauge check: HEPA change at site limit or ≈2× clean ΔP / ≈2 in. w.g. (≈500 Pa); carbon is NOT replaced on ΔP but on lab methyl iodide tests of test-canister samples (e.g. ASTM D3803), high ΔP → dust/moisture, sudden low ΔP → bypass/settling → leak test; results emailed to engineers

## Market updates
- [Nuclear market update October 2026](https://iodineairsystems.com/blog/nuclear-market-update-october-2026/): NRC final rule on reusing DOE/DOW demonstration data (Oct 22, 2026; 10 CFR 50 and 53); Prosperity One, up to six AP1000s (6.6 GW) in Lewis County KY (Oct 21); Navy selects Radiant Kaleidos 1 MWe microreactor for NWS Crane, install by Sept 2028 (Oct 20); Vermont Yankee decommissioning ~99% complete (Sept 23); Oklo Groves fifth DOE pilot reactor critical (Aug 6); NRC accepts UIUC Kronos microreactor application (May 29); Part 57 microreactor framework proposed, Part 53 effective Apr 29; filtration implications per item, sources linked
- [Nuclear market update September 2026](https://iodineairsystems.com/blog/nuclear-market-update-september-2026/)

## OEM and custom manufacturing
- [OEM & custom manufacturing](https://iodineairsystems.com/oem-custom-manufacturing/): build to customer drawings, design to customer requirements, or private label of IAS designs; HEPA and iodine adsorber air carts, filter housings and adsorber cells, impregnated carbon, carbon and filter test systems, decontamination coatings, radiation-monitoring integration, tritium hardware; first-article testing, in-house methyl iodide carbon testing, test reports and CoC; NDA first; commercial grade (no NQA-1 claim); quoted per project

## Tritium monitors (IAS-T series)
Iodine Air Systems supplies the IAS-T series as an authorized distributor. Price on quotation. US 120 V / 60 Hz versions for mains-powered models (220–230 V / 50 Hz export). Each instrument ships with a factory calibration certificate and a certificate of conformance. The instruments are commercial-grade items (not NQA-1 / 10 CFR 50 Appendix B safety-related); dedication support is available. Air monitor ranges start at 3.7 × 10^4 Bq/m³ (1 µCi/m³ = 0.05 DAC for tritiated water, DAC 2E-5 µCi/mL).

- [Tritium monitors overview and quote builder](https://iodineairsystems.com/tritium-monitors/): all eight models, comparison, facility selection table, standards, FAQ
- [IAS-TP20 portable tritium-in-air monitor](https://iodineairsystems.com/tritium-monitors/portable-tritium-air-monitor-ias-tp20/): gamma-compensated, 3.7×10^4–3.7×10^10 Bq/m³ (wide-range option to 3.7×10^13), GM dose-rate channel, ≤3.5 kg, batteries or USB-C
- [IAS-TA20 rack-mount tritium air monitor](https://iodineairsystems.com/tritium-monitors/rack-mount-tritium-air-monitor-ias-ta20/): 19-inch 5U, 2 × 1 L wire-wall chambers plus gamma compensation, 3.7×10^4–3.7×10^11 Bq/m³, Modbus/TCP
- [IAS-TA30 floor-standing tritium air monitor](https://iodineairsystems.com/tritium-monitors/cabinet-tritium-air-monitor-ias-ta30/): 2 L flow-through chamber, tritium and flow alarms, touchscreen, Modbus/TCP
- [IAS-TG30 glovebox and process tritium monitor](https://iodineairsystems.com/tritium-monitors/glovebox-process-tritium-monitor-ias-tg30/): 3 L all-metal chamber, leak rate ≤1×10^-9 Pa·m³/s, −10 to 85 °C, VCR fittings
- [IAS-TG10 wall-mount process tritium detector](https://iodineairsystems.com/tritium-monitors/wall-mount-process-tritium-detector-ias-tg10/): 1 L chamber rated above 5 atm, built-in electrometer, Modbus to PLC
- [IAS-TD20 tritium ionization chamber module](https://iodineairsystems.com/tritium-monitors/tritium-ionization-chamber-module-ias-td20/): OEM 2 L module, 12 VDC, Modbus RTU over RS-422
- [IAS-TS40 HT/HTO speciation system](https://iodineairsystems.com/tritium-monitors/ht-hto-tritium-speciation-monitor-ias-ts40/): separates and measures elemental tritium and tritiated water online
- [IAS-TW10 tritium wipe monitor](https://iodineairsystems.com/tritium-monitors/tritium-surface-wipe-monitor-ias-tw10/): 100 cm² wipes, result under 2 minutes, no P-10 gas

## Tritium purification
- [ZrCo metal-foam tritium purification, getter and storage beds (IAS-ZCF)](https://iodineairsystems.com/tritium-purification/): zirconium-cobalt alloy on open-cell metal foam; captures hydrogen isotopes from inert carrier gas at room temperature and releases them on heating; engineered per project, price on quotation; export-controlled nuclear dual-use item (US ECCN 1B231), end-use statement and export licenses required

## Tritium guides and tools
- [How to choose a tritium monitor](https://iodineairsystems.com/tritium-monitors/how-to-choose-a-tritium-monitor/): detection methods, range vs DAC, gamma compensation, HT vs HTO, carrier gas, memory, spec checklist
- [Tritium monitoring for fusion facilities](https://iodineairsystems.com/tritium-monitors/fusion-tritium-monitoring/): monitoring map for D-T facilities; NRC proposed fusion rule (Feb 26, 2026, 10 CFR Part 30)
- [Tritium DAC and unit converter](https://iodineairsystems.com/tritium-monitors/tritium-dac-unit-converter/): Bq/m³ ↔ µCi/mL ↔ DAC, DAC-hours, effluent-limit multiples
- [Tritium monitor selection guide (PDF)](https://iodineairsystems.com/downloads/tritium-monitor-selection-guide.pdf)

## Nuclear carbon, testing and filtration
- [Radioiodine activated carbon and consumables](https://iodineairsystems.com/nuclear/consumables/): nuclear-grade impregnated carbon in 50 L drums, honeycomb carbon, adsorbers, HEPA filters; prices on page
- [Cyclohexane (methyl iodide alternative) test system](https://iodineairsystems.com/nuclear/methyl-iodide-test-system/): non-radioactive carbon and filter testing; not an NRC-accepted substitute for ASTM D3803
- [Methyl iodide carbon testing service](https://iodineairsystems.com/nuclear/methyl-iodide-testing-service/): methyl iodide and cyclohexane testing of carbon samples
- [Nuclear air filtration](https://iodineairsystems.com/nuclear/): portable HEPA and iodine adsorber air carts (IAS-NC700-HI, IAS-NC500-HI-CUSTOM, IAS-NC1200-HI), strippable decontamination coating (IAS-SDC-50)
- [Custom iodine adsorption system](https://iodineairsystems.com/custom-iodine-adsorption-system/): how custom iodine adsorbers work and how they are specified, with a delivered example (JJH-100 stainless-steel adsorber with ΔP gauge, ball-valve sample points and flanged connections, plus two JJH-50 impregnated activated-carbon beds); I2 captured by physical adsorption, methyl iodide by KI isotopic exchange or TEDA; design references: 2-inch (50 mm) beds, ~0.25 s residence time per 2 in (NRC RG 1.52 practice), inlet RH below ~70%, ASTM D3803 lab tests of test-canister carbon, in-place tracer-gas leak test (ASME N510 / AG-1 Section TA); ΔP shows airflow resistance, not remaining iodine capacity; carbon ≥99.95% methyl iodide removal on in-house rig (30 °C, 95% RH; not an ASTM D3803 result); designed to EJ/T 20088-2014, not ASME AG-1 or NQA-1 certified; RFQ checklist; quoted per project; diagram CC BY 4.0; contact sales@iodineairsystems.com
- [Decommissioning air filtration](https://iodineairsystems.com/nuclear/decommissioning/)

## Healthcare ventilation guides
- [ASHRAE 170-2025: what changed](https://iodineairsystems.com/ashrae-170-2025-what-changed-healthcare-air-filtration/): the 12 changes vs 170-2021 listed by ASHE, filtration baseline (MERV 16 for ORs, cesarean, Class 3 imaging since 2021; HEPA at terminals for higher-acuity procedures), nuclear medicine, Section 10 construction, adoption via FGI 2026; checklist PDF
- [ASHRAE 241 vs 170](https://iodineairsystems.com/hospital/ashrae-241-vs-170/) · [I-131 therapy room ventilation](https://iodineairsystems.com/optimizing-I131-therapy-room-ventilation/)

## Other pages
- [Hospital air purification](https://iodineairsystems.com/hospital/): two-stage units, washable metal-foam pre-filter + HEPA (≥99.97% at 0.3 µm), optional carbon for nuclear medicine; variable-speed fan; third-party whole-unit test on IAS-NC500-HI-CUSTOM: >99.99% for KCl particles ≥0.3 µm (GB/T 18801-2022 Annex L, report KJ2026002491); capture only, no pathogen-kill claims
- [ASHRAE 241 for hospitals + ECAi calculator](https://iodineairsystems.com/hospital/ashrae-241/)
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