Radiation Safety Services

What Radiation Safety Services does

Radiation Safety Services (RSSI) is a privately held, Certified Health Physicist-led firm headquartered in Morton Grove, Illinois, founded in 1975 by Herman Cember and Eli Port to deliver radiation safety consulting, laboratory analysis, instrument calibration, and radon measurement services to regulated buyers across the United States and Canada. The company's offer is built on a stack of laboratory and calibration accreditations, including ISO/IEC 17025:2017 (PJLA #101325), NELAP, NRPP, C-NRPP, NRSB, Illinois Radioactive Materials License IL-01429-01, and CNSC R-116 leak-test approval, alongside NIST-traceable measurements and a 5-business-day calibration turnaround that is accepted by USNRC, Agreement States, CNSC, and USEPA. Its core technology base includes alpha-track radon detectors (AT-101 with 0.1 pCi/L minimum detectable concentration and AT-102 with a compact 32 mL chamber), high-resolution gamma spectroscopy systems, low-background internal proportional counting, and secondary-standard calibration equipment.

RSSI serves verticals with statutory radiation compliance obligations: industry (including retail, manufacturing, and technology), research, education, medicine, nuclear power, military, environmental protection, and government agencies. Its go-to-market is hybrid: direct enterprise sales for consulting, calibration, and lab services (accessed by phone, email, or web contact at 1-847-965-1999 / [email protected]) paired with a self-serve e-commerce storefront at store.rssi.us selling consumer and professional radon test kits and sealed-source leak test kits. Revenue is generated through professional-services fees (consulting, accreditation-backed lab analysis, NIST-traceable calibration) and hardware/unit sales of radon detectors and leak test kits priced from $22 to $1,350 per case, with volume discounts available for professional testers and multi-unit facilities.

The business model exploits the regulatory dependence of its buyer base: clients must demonstrate ongoing compliance with NRC, Agreement State, DOT, EPA, and OSHA standards, and RSSI monetizes this recurring compliance workload through program design, third-party audits, license applications, training, emergency response, instrument calibration, and radon sampling and analysis. The firm's revenue mix is anchored by professional services, with a smaller but visible consumer and SMB product stream from radon test kits distributed domestically and (by phone order) into Canada.

Name

Radiation Safety Services

Legal name

RSSI

Website

https://rssi.us

Company type

Private

Founded year

1975

Operating status

Operating

Headcount range

11–50 employees

Short description

Radiation Safety Services (RSSI) is an Illinois-based, ISO/IEC 17025-accredited firm founded in 1975 that delivers radiation safety consulting, laboratory analysis, instrument calibration, and radon testing products to regulated industries, research, education, medicine, nuclear power, military, and government across the US and Canada.

Ownership category

akta.pro rank

Product category

Radiation Safety Services

NAICS

Testing Laboratories and Services (54138), Scientific Research and Development Services (5417)

SIC

Services-Testing Laboratories (8734), Services-Commercial Physical & Biological Research (8731), Services-Engineering Services (8711)

akta.pro primary industry

Radiation Protection & Health Physics Services (ALARA programs, shielding design, RSO services) (EUAKAIAJ)

akta.pro secondary industries

Radiation Measurement, Dosimetry & Monitoring Services (Personal/environmental dosimetry, calibration labs) (EUAKAIAH), Radon Risk Screening & Testing (Real Estate Transactions) (EUAHAEAG), Nuclear Materials Testing, Assay & Characterization Services (NDA/NDE, radiochemistry, materials analysis) (EUAKAIAL), Radiation Exposure Monitoring (Ionizing/Non-Ionizing) (EUAHAGAE)

Keywords

• Radiation safety consulting
• Radiological laboratory analysis
• Instrument calibration services
• Radon testing products
• Regulatory compliance services

Headquarters

HQ city

Morton Grove

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

Personnel, Technology or R&D, Operations, Marketing or Sales, Supply Chain

Revenue model

1. Radiation Safety Consulting: Professional consulting services guiding clients through NRC, agreement state, DOT, EPA, and OSHA standards. Includes radiation safety program design, audits, licensing applications, training, and emergency response services.
2. Laboratory Analysis Services: Full-service radiological laboratory providing high resolution gamma spectroscopy, internal proportional counting, sealed source leak testing, air monitoring, and surface contamination analysis. ISO/IEC 17025:2017 accredited with NIST traceability.
3. Instrument Calibration Services: Secondary standard calibration services for radiation detection instruments. Most makes and models of radiation survey meters calibrated to manufacturer's specifications within 5 business days.
4. Radon Testing Products: Sale of radon test kits including AT-101 and AT-102 alpha-track detectors and Air Chek charcoal kits. Sold individually or in cases with analysis and reporting included in price.
5. Sealed Source Leak Test Kits: Leak test kits containing swabs, gloves, instructions, return mailer, and analysis. Used for verifying integrity of sealed radioactive sources.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels5 records

Core offering

Radiation Safety Services (RSSI) provides radiation safety consulting, ISO/IEC 17025:2017 accredited radiological laboratory analysis, secondary standard instrument calibration, and radon testing products and services. The company sells alpha-track radon detectors (AT-101 and AT-102), Air Chek charcoal test kits, and sealed source leak test kits alongside professional services that guide clients through NRC, agreement state, DOT, EPA, and OSHA regulatory compliance.

Product overview

Radiation Safety Services (RSSI) offers a unified portfolio of radiation safety solutions comprising consulting services, ISO/IEC 17025:2017 accredited laboratory services, secondary standard calibration services, and radon testing products. The company's product line includes Model AT-101 and AT-102 Alpha-track radon detectors sold in consumer and professional packaging configurations, Air Chek short-term charcoal test kits, and Sealed Source Leak Test Kits. Services span regulatory compliance consulting, high-resolution gamma spectroscopy, internal proportional counting, instrument calibration (returned within 5 business days), and comprehensive radon analysis for residential, commercial, industrial, and government clients across multiple sectors.

Differentiator

Problem solved

Functional benefit

Brands

• Model AT-101 Alpha-track Radon Detector: RSSI's alpha-track radon detector for short-term testing (30 days to 1 year), available in consumer and professional packaging.
• Model AT-102 Alpha-track Radon Detector
• Air Chek Short-Term Radon Test Kit

Products and services

• Model AT-101 Consumer Alpha-track Radon Test Kit Individual do-it-yourself radon test kit containing one RSSI Model AT-101 Alpha-track radon detector for testing periods from 30 days to one year; includes shipping, analysis, reporting, and full retail customer support for individual consumers.
• Model AT-101 Consumer Alpha-track Radon Test Kit (Case of 50) Case of 50 individual do-it-yourself radon test kits including RSSI Model AT-101 Alpha-track radon detectors, complete instructions, data card, hook, and US postage-paid return mailer; price includes analysis and report.
• Model AT-101 Professional Alpha-track Radon Test (25 per Case) Professional packaging with 25 Model AT-101 detectors per case including a tracking form; designed for large-scale radon testing projects and professional testers with electronic data submission only; no retail customer support.
• Model AT-102 Professional Alpha-track Radon Individual Tests Low-cost, compact, filtered radon detector with new lighter outer housing; sold in cases of 25 individually-packed kits; designed for large-scale radon testing projects and professional testers with minimum deployment of 1 month and 24-month expiration after manufacture.
• Air Chek Short-Term Radon Test Kit - Consumer Model Short-term (3-7 days) activated charcoal (AC) radon gas test kit including instructions and prepaid return mailer for lab analysis; consumer model distributed through RSSI's e-commerce store.
• Sealed Source Leak Test Kit Kit including one testing swab, gloves, information and instruction sheet, return mailer, and analysis and results transmittal for testing sealed radioactive sources for leaks or contamination.
• Radiation Safety Consulting Services Radiation safety support and consulting including license applications for NRC and agreement states, radiation safety program design and staffing, third-party audits, enforcement action intervention, sealed source and device registry support, training, emergency management, and environmental remediation for regulated industries and government clients.
• Laboratory Services Full-service ISO/IEC 17025:2017 accredited radiological laboratory including high resolution gamma spectroscopy, low background internal proportional counting, sealed source and device leak test analysis, air monitoring samples, and surface contamination wipes for industries, research, and government clients.
• Calibration Services Secondary Standard calibration services for radiation survey meters and portable radiation measuring equipment, returning calibrated instruments within 5 business days; meets ISO/IEC 17025:2017, ANSI 323-1978, and MIL-STD-45662A standards; accepted by USNRC, Agreement States, CNSC, and USEPA.
• Radon Testing Services Radon testing and analysis using alpha-track detectors optimized for accuracy, including long-term (AT-102) and short-term (AT-101) options, plus AirChek charcoal tests for rapid 3-7 day results; provides detailed reporting for residential, commercial, and industrial clients.

Quantifiable outcome

• Alpha-track radon detectors can achieve minimum detectable concentration as low as 0.1 pCi/L for 91-day tests
• +2 more outcomes

Segments8 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Scale indicators3 records

Recent moves5 records

Expansion highlights5 records

Direct peers

• Radiation Detection Company: Specialty provider of nuclear instrumentation calibration and repair services. Closely comparable to RSSI's calibration pillar with similar turnkey service model targeting hospitals, universities, and industrial radiation safety programs.
• Sun Nuclear Corporation: Provider of radiation measurement and quality assurance solutions for radiation therapy and diagnostic imaging. Comparable to RSSI's medical vertical with overlapping customer base (hospitals, cancer centers) and calibration expertise.
• AccuStar Reference Laboratory: Radon measurement laboratory offering alpha-track and charcoal radon testing under NRPP/NRSB accreditations. Direct peer to RSSI's radon business with comparable consumer and professional test kit offerings.
• Canberra Industries (Mirion): Specializes in radiation detection and measurement instruments for nuclear power, safeguards, and research. Now part of Mirion, it directly overlaps with RSSI's gamma spectroscopy and proportional counting laboratory capabilities.
• Arrow Tech Inc. Provides radiation safety training, calibration, leak testing, and consulting services to medical, industrial, and academic users. Directly comparable niche competitor to RSSI across the consulting/lab/calibration service stack.
• Air Chek, Inc. Major radon testing service provider whose charcoal kits RSSI resells; offers consumer and professional radon measurement with NRPP accreditation. Direct competitor in the radon kit retail channel.

Broad incumbents

• Mirion Technologies: Public company and largest pure-play provider of radiation detection, measurement, and safety solutions. Overlaps directly with RSSI in dosimetry, calibration, and radiation safety consulting but operates at far greater scale across global nuclear, medical, and defense markets.
• Thermo Fisher Scientific: Major instrumentation manufacturer with a portfolio that includes radiation measurement and contamination monitoring products for nuclear, environmental, and research applications. Competes with RSSI in lab instrumentation, gamma spectroscopy, and counting equipment.
• Fortive (Landauer): Fortive-owned Landauer is a global leader in radiation dosimetry services, providing personal dosimetry, environmental monitoring, and medical physics services. Competes with RSSI's calibration and lab services for hospital, university, and industrial radiation safety customers.

Regional players

• National Radon Defense: Radon testing and mitigation franchise network across the US. Comparable to RSSI's radon testing pillar but with a mitigation services arm; competes for the same real estate and residential radon screening customers.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/radiation-safety-services-inc

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Radiation Safety Services