What Andersen Sterilizers does

Andersen Sterilizers is a family-owned, privately held manufacturer of ethylene oxide (EO) gas sterilization systems headquartered in Haw River, North Carolina, with a UK division and international distribution. Founded in 1959 by Dr. H.W. Andersen — a Bellevue Hospital surgeon who needed to sterilize delicate nasogastric tubes and wound drains — the company has spent more than 60 years building a portfolio of FDA-cleared sterilizers distinguished by its proprietary Ethylene Oxide-Flexible Chamber Technology (EO-FCT). EO-FCT replaces traditional rigid metal chambers with flexible gas-impermeable sterilization bags combined with unit-dose 17.6g (or 10.5g) EO cartridges, achieving terminal sterilization at a 10⁻⁶ sterility assurance level using approximately 90% less EO than competing systems, and enabling room-temperature operation without deep vacuum or steam.

The product family spans the newly released EOGas 4PLUS (FDA 510(k) cleared for terminal sterilization of duodenoscopes and colonoscopes), the EOGas 4 heated-cycle sterilizer for surgical centers and large-animal veterinary practices, the EOGas 3 high-capacity series for manufacturing and large facilities (10–33 cu ft), and the AN75 Series tabletop Anprolene units for clinics and mobile veterinary practices. Complementing the hardware are the AN5100 and AN5200 dry-catalyst abators (99.9% EO emissions reduction), the in-house manufactured Humidichip RH stabilizer, EO cartridges, sterilization bags, dosimeters, biological indicators, and consumable accessories. A sister company, Andersen Scientific, provides contract and lot sterilization services for medical device manufacturers.

Andersen generates revenue through capital equipment sales routed exclusively through an authorized US distributor network (Covetrus, MWI Animal Health, Patterson Veterinary, Henry Schein, Fisher Scientific, Cole-Parmer, and others) plus international offices and distributors; pricing is quote-based with no public list pricing and includes free lifetime operator training. Recurring revenue is driven by the consumables consumable kits (e.g., AN7514, AN1004.16, AN1006) that are consumed on a per-cycle basis across the installed base. Customers include hospital surgical centers, plastic and specialty surgery practices, companion and exotic animal veterinary practices, medical device manufacturers, and research institutions, with regulatory positioning and the FDA Master File Pilot Program lowering switching costs for facilities converting from traditional rigid-chamber sterilization.

Name

Andersen Sterilizers

Legal name

Andersen Sterilizers, Inc.

Website

https://sterility.com

Company type

Private

Founded year

1959

Operating status

Operating

Headcount range

51–100 employees

Short description

Andersen Sterilizers is a family-owned US manufacturer of FDA-cleared ethylene oxide (EO) gas sterilization systems using proprietary flexible-chamber technology, serving veterinary clinics, hospitals, surgical centers, medical device manufacturers, and research institutions.

Ownership category

akta.pro rank

Product category

Gas Sterilization Equipment

NAICS

Surgical Appliance and Supplies Manufacturing (339113)

SIC

Surgical & Medical Instruments & Apparatus (3841)

akta.pro primary industry

Sterilization Equipment & Systems (Autoclaves, Low-Temp, ETO, H2O2, UV) (HLAHANAA)

akta.pro secondary industries

Reprocessing & Endoscope Infection Prevention (AERs, Drying/Storage, Leak Testing, Brushes) (HLAHANAJ), Sterilization Services & Contract Reprocessing (ETO/Gamma/E-beam providers) (HLAHANAB), Sterilization Consumables & Packaging (Wraps, Pouches, Indicators, Trays/Containers) (HLAHANAC)

Keywords

• Ethylene oxide sterilization
• Gas sterilization systems
• Low-temperature sterilization
• Medical device reprocessing
• Contract sterilization services

Headquarters

HQ city

Clacton-on-sea

HQ country

United Kingdom

HQ region

Europe

Offices4 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Sterilizer Hardware Sales: Andersen sells sterilizer equipment units (EOGas 4PLUS, AN75 Series, EOGas 4, EOGas 3) through authorized distributor network. Products are durable capital equipment with upfront acquisition cost and recurring consumables revenue.
2. Consumables and Replacement Parts: Recurring revenue from EO cartridge refill kits (AN7514, AN1004.16, AN1006), sterilization bags, Humidichips, Dosimeters, Biological Indicators, abator cartridges, printer cartridges and labels, and accessories. Consumables are sold as kits bundled per cycle or per pouch counts.
3. Contract Sterilization Services (Andersen Scientific): Sister company Andersen Scientific provides contract sterilization services for third-party manufacturers, using EO-FCT for lot sterilization of medical devices with rapid turnaround.

Pricing tiers

Go-to-market motion2 records

Distribution channels11 records

Marketing channels10 records

Core offering

Andersen Sterilizers manufactures FDA-cleared ethylene oxide (EO) gas sterilization systems — the EOGas 4PLUS, EOGas 4, EOGas 3, and AN75 Series (Anprolene) — built on its proprietary EO-Flexible Chamber Technology (EO-FCT) that uses flexible sterilization bags and unit-dose 17.6g EO cartridges to deliver terminal sterilization with 90% less gas than traditional rigid-chamber systems. The hardware line is paired with emissions abatement systems (AN5100/AN5200), consumables (refill kits, Humidichips, Dosimeters, Biological Indicators), and contract sterilization services delivered through sister company Andersen Scientific for medical device manufacturers.

Product overview

Andersen Sterilizers offers a portfolio of FDA-cleared ethylene oxide (EO) gas sterilizers featuring proprietary EO-Flexible Chamber Technology (EO-FCT). The core product line includes the EOGas 4PLUS (newly released for healthcare duodenoscope/colonoscope sterilization), EOGas 4 (heated-cycle for long lumens), EOGas 3 Series (high-capacity for manufacturing with 10-33 cu ft models), and AN75 Series/Anprolene (room-temperature tabletop sterilizers for veterinary and compact clinics). These systems use microdose EO cartridges (17.6g per cycle) requiring 90% less gas than traditional rigid chamber sterilizers. The portfolio is complemented by abatement systems (AN5100/AN5200) achieving 99%+ emissions reduction, and a comprehensive range of consumables including refill kits, Humidichips, Dosimeters, and Biological Indicators. The company also offers contract sterilization services through sister company Andersen Scientific.

Differentiator

Problem solved

Functional benefit

Brands

• EOGas 4PLUS: Newly released sterilizer system for healthcare facilities, FDA-cleared for duodenoscopes with EO-Flexible Chamber Technology.
• EOGas 4
• EOGas 3
• AN75 Series
• Anprolene
• EO-Flexible Chamber Technology (EO-FCT)
• AN5100 EO Abator
• Humidichip

Products and services

• EOGas 4PLUS Sterilizer FDA 510(k)-cleared sterilizer featuring EO-Flexible Chamber Technology (EO-FCT) for terminal sterilization of difficult-to-sterilize devices including duodenoscopes and colonoscopes. Uses a microdose 17.6g EO cartridge per cycle, achieving 90% less EO than rigid-chamber competitors and is sold primarily to healthcare facilities.
• EOGas 4 Sterilizer Heated-cycle EO sterilizer proven to terminally sterilize the longest lumens. Features an integrated aeration chamber and low EO dose, suitable for surgical centers and large-animal veterinary practices; holds the first and only FDA clearance for terminal sterilization of duodenoscopes and colonoscopes.
• EOGas 3 Series Sterilizers High-capacity EO sterilizers designed for manufacturing and large facilities, including the EOGas 310 tabletop (10 cu ft) and EOGas 333 freestanding (33 cu ft). Built-in microprocessor monitoring enables continuous operation with new bag loading/unloading during cycles; uses 10.5g EO cartridges.
• AN75 Series (Anprolene) Sterilizer FDA 510(k)-cleared tabletop EO sterilizer operating at room temperature. Features interactive touchscreen, integrated Process Challenge Device (PCD), redesigned EO cartridge, and supervisor code enforcement. Small footprint makes it ideal for veterinary practices, mobile clinics, and research facilities with limited space.
• AN5100 EO Abator Emissions abatement system designed to remove more than 99% of ethylene oxide from Anprolene and EOGas 4 sterilizer exhaust. Uses dry catalyst resin to convert EO into biodegradable organic compounds; replacement cartridge has 200-cycle capacity and spent cartridges are non-hazardous. Available in 115V and 230V models.
• AN5200 EO Abator Emissions abatement system designed for EOGas 3 sterilizers, removing more than 99% of ethylene oxide from the exhaust stream. Replaceable abator drum with 1,800-cycle capacity; spent drums are non-hazardous.
• AN1004.16 EOGas 4 Refill Kit Consumable refill kit for EOGas 4 systems containing 14 sterilization bags (35L), 14 EO cartridges (17.6g each), 14 Humidichips, and 14 Dosimeters — enough for 14 sterilization cycles.
• AN1006 EOGas 3 Refill Kit Consumable refill kit for EOGas 3 systems using 10.5g EO cartridges; available in standard-use and manufacturing-use variants.
• AN7514 Anprolene AN75 Gas Refill Kit All-in-one consumable kit for AN75 sterilizers containing hermetically sealed glass EO ampoules encased in polyurethane cartridges with trigger guard and safety seal, plus humidification and monitoring components.
• Contract Sterilization Services In-house and contract EO sterilization solutions for medical device manufacturers, including lot sterilization with rapid turnaround and R&D support, delivered through sister company Andersen Scientific for both FDA-regulated and non-FDA-regulated devices.

Quantifiable outcome

• 90% less EO per cycle vs. rigid-chamber competitors
• +8 more outcomes

Named customers12 records

Segments5 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Scale indicators9 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• Steris Corporation: Steris is the largest pure-play sterilization and infection prevention company globally, offering rigid-chamber EO sterilizers (V-PRO, Amsco) plus a broad portfolio of steam, VHP, and contract sterilization services. It competes with Andersen's EOGas systems in hospitals and represents both a primary competitor and the dominant incumbent in EO hospital sterilization.
• Advanced Sterilization Products (ASP, Johnson & Johnson MedTech): ASP supplies the STERRAD low-temperature hydrogen peroxide plasma sterilizers widely used in hospitals for heat-sensitive devices. They are a key hospital alternative to EO for endoscope reprocessing, making them a direct competitive threat to Andersen's EOGas 4PLUS value proposition, though not an EO competitor per se.
• 3M Health Care (Solventum): 3M's Health Care division (now Solventum) historically offered EO sterilization equipment and sterilization monitoring products alongside its broader medical/surgical portfolio. They are an incumbent in the sterilization monitoring/consumables category where Andersen also competes with biological indicators and dosimeters.
• Getinge: Getinge is a major global sterilization and infection control provider offering steam sterilizers, low-temperature platforms, and surgical workflow solutions for hospitals. Their broad sterilization portfolio makes them a top-of-mind competitor for hospital RFPs where Andersen now competes with EOGas 4PLUS.
• Belimed (Metall Zug Group): Belimed supplies industrial and hospital sterilization and disinfection equipment (steam, low-temperature, washer-disinfectors) globally, with strong presence in European hospitals. Comparable on the equipment side to Andersen's hospital-targeted EOGas systems.
• Stericycle (now known as Sotera Health, parent of Nelson Labs): Sotera Health owns Sterigenics (the largest contract EO sterilization services provider globally) and Nelson Labs, directly competing with Andersen Scientific's contract sterilization services business in medical device manufacturing and lab testing.

Direct peers

• Midmark Corporation: Midmark is a leading manufacturer of tabletop steam autoclaves commonly used in dental, veterinary, and small medical practices. Explicitly referenced by an Andersen customer testimo as a base case for instrument capacity, positioning Midmark as the closest direct competition in the small-clinic/vet tabletop sterilization segment where the AN75 competes.
• Tuttnauer: Tuttnauer is an established global manufacturer of autoclaves and sterilization equipment ranging from tabletop clinic units to large hospital sterilizers. They compete with Andersen across veterinary and small-to-mid clinic segments, particularly for steam sterilization where EO does not address.
• Matachana: Matachana manufactures low-temperature sterilization (formaldehyde, hydrogen peroxide) and steam sterilizers primarily for hospitals and pharmaceutical/lab applications in Europe. They are a direct hospital sterilization competitor and operate in adjacent low-temperature modalities that could substitute for Andersen's EO value proposition.

Regional players

• Steelco (Miele Professional): Steelco (now part of Miele Professional) supplies hospital-grade steam and low-temperature sterilizers primarily in Europe, with growing U.S. presence via Miele. Comparable to Andersen in targeting hospital sterilization workflows, but with stronger European installed base.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

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Compliance5 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 records

Subsidiaries2 records

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 Andersen Sterilizers