Steam sterilization equipment for media, glassware, and biohazardous waste
Tuttnauer NOVA 3 Class B Autoclave 23L Pre/Post Vacuum Sterilizer w/ Printer
Seller Refurbished · medicalsuppliertr 100%
“Tuttnauer NOVA 3 Class B 23L autoclave with pre/post vacuum and built-in printer covers porous loads, wrapped packs, and regulatory compliance documentation — all three critical lab requirements — in a seller-refurbished unit from a perfect-rated seller at just below typical range.”
Tuttnauer T-Edge 10/11 Autoclave | 18L/23L Class B Upgradeable Sterilizer
New · hspengineering 100% · Free shipping
“Tuttnauer T-Edge Class B 18L/23L is a current-generation trusted-brand unit with full Class B pre-vacuum capability and upgradeable chamber size, sold new with free shipping from a perfect-rated seller at mid-range pricing.”
Tuttnauer Autoclave Floor-Standing 5050ELV-D
Used · unigreenscheme 100%
“Tuttnauer 5050ELV-D floor-standing autoclave offers significantly larger chamber capacity with liquid cycle capability for media preparation, from a 99.8%-rated seller at the upper end of the typical range.”
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Before you buy — what to inspect
Best used autoclave value. Parts universally available, service techs know them cold, and they're built to last 20+ years. The 2540EA (25L benchtop) and 3870EA (85L floor) are the sweet spots. Even 15-year-old units run perfectly with new gaskets.
Checklist: Door gasket condition, heating element resistance, chamber interior pitting, data printer functionality
Hospital-grade workhorses built for continuous operation. Often available from hospital decommissions at steep discounts. Larger footprint but nearly indestructible. Excellent for high-throughput labs.
Checklist: Steam generator condition, vacuum pump oil level, control board version (older ones need upgrades), door mechanism wear
European premium brand with excellent build quality. Less common in US so parts can take longer but they're available. Often found in pharma decomissions with full validation packages.
Checklist: Control software version, steam trap function, gasket condition, validation documentation availability
American-made research-grade autoclaves. Simpler designs mean fewer failure points. Common in university labs. Great value when found, though less frequently on secondary market than Tuttnauer.
Checklist: Controller age, heating element condition, pressure vessel certification date
Japanese quality with good reliability history. Less robust US parts network than Tuttnauer. Good choice if buying from a lab that maintained it well. Check for hard water damage.
Checklist: Chamber interior condition, control panel functionality, steam generator scaling
Budget new alternatives
Small academic labs doing basic media sterilization without complex cycle requirements
Startups and small labs with minimal sterilization needs
Laboratory autoclaves achieve sterilization through moist heat under pressure, typically operating at 121°C (250°F) and 15 PSI for 15-30 minutes. The combination of heat, pressure, and moisture denatures proteins and destroys all microbial life including bacterial spores, the most resistant life forms. Modern autoclaves offer multiple cycle types: gravity displacement cycles for dry goods and glassware, liquid cycles with slow exhaust to prevent boil-over, and pre-vacuum cycles that remove air pockets for porous loads and wrapped instruments. Chamber sizes range from compact 20-liter benchtop units suitable for small research labs to 500+ liter floor models for production environments. Key features include programmable cycles, data logging for validation, and automatic door locks for safety. Most units require building steam supply or contain their own steam generator, and all require proper drainage and ventilation. Cycle validation through biological indicators (Geobacillus stearothermophilus spore strips) is mandatory for quality-critical applications.
Tuttnauer dominates the mid-size lab autoclave market with bulletproof reliability, excellent US service network, readily available parts, and the 3870EA specifically offers the perfect balance of 85L chamber capacity, pre-vacuum cycles, and reasonable footprint. Used Tuttanuers from the 2010s run flawlessly with basic maintenance. Their control boards are repairable, unlike some competitors that require full replacement.
What you lose: Pre-vacuum cycles for porous loads, precise liquid cycle control, reliable data logging for compliance documentation, robust safety interlocks, serviceable control boards, and any meaningful warranty. Budget units often have inconsistent temperature distribution across the chamber.
What you keep: Basic gravity cycle sterilization capability adequate for glassware and non-critical media prep. If you're doing simple work in a BSL-1 lab without regulatory requirements, a quality budget unit can suffice.
GMP environments require IQ/OQ/PQ documentation packages, 21 CFR Part 11 compliant electronic records, annual revalidation protocols, and traceable calibration of all sensors. Buy from vendors who can provide these documents or budget $5,000-15,000 for third-party validation services.