Tuttnauer 3850EL 65L Laboratory Autoclave

Tuttnauer 3850EL Laboratory Autoclave – Used & Refurbished

Laboratories that routinely sterilize culture media, liquids, glassware, reusable laboratory supplies, plastics, and other steam-compatible materials often need considerably more capacity and flexibility than a small tabletop sterilizer can provide. The refurbished Tuttnauer 3850EL Laboratory Autoclave from American Instrument Exchange combines a spacious 65-liter chamber with automatic electronic controls, programmable laboratory cycles, cycle documentation, and a front-loading configuration designed specifically for research and scientific applications.

With a stainless steel chamber measuring approximately 15 inches in diameter by 19.7 inches deep, the Tuttnauer 3850EL provides substantial loading capacity while maintaining a relatively compact benchtop footprint. Its laboratory-focused control system supports sterilization of liquids, glassware, solid materials, and compatible plastics, making the 3850EL a versatile option for microbiology, biotechnology, pharmaceutical, academic, quality-control, and industrial laboratories.

This used Tuttnauer 3850EL has been reconditioned, inspected, and tested by American Instrument Exchange and includes a 90-day warranty. For laboratories replacing an aging autoclave or adding additional sterilization capacity, a refurbished 3850EL can provide sophisticated laboratory functionality at a significantly lower acquisition cost than purchasing a comparable new system.

Tuttnauer 3850EL Key Features

• 65-liter front-loading laboratory steam autoclave

• Approximately 15-inch-diameter × 19.7-inch-deep chamber

• Automatic electronic cycle control

• Sterilization temperature range of approximately 105°C to 138°C

• Designed for laboratory liquids, glassware, compatible plastics, and solid loads

• Programmable laboratory sterilization cycles

• Advanced multicolor control interface

• Built-in memory for approximately 200 cycle records

• USB and Ethernet cycle-data capabilities on applicable D-Line configurations

• 316L stainless steel chamber with electropolished finish

• Front-loading benchtop design

• Optional configurations originally available for rapid cooling, vacuum, drying, and biohazard applications

• Reconditioned, inspected, and tested by American Instrument Exchange

• Includes a 90-day warranty

Overview

The Tuttnauer 3850EL is an automatic front-loading laboratory autoclave designed to provide reliable sterilization across a broad range of scientific applications. Unlike sterilizers developed primarily for medical or dental instruments, the 3850EL belongs to Tuttnauer's laboratory autoclave family and was engineered around the needs of research facilities processing liquids, culture media, glassware, plastics, waste, and other laboratory materials.

Its 65-liter chamber offers a useful middle ground between small tabletop autoclaves and much larger floor-standing systems. The cylindrical chamber measures approximately 380 mm in diameter by 500 mm deep, or about 15 inches in diameter by 19.7 inches deep. This provides enough capacity for meaningful laboratory batches without requiring the footprint of an 85-, 110-, or 160-liter sterilizer.

The 3850EL uses an advanced electronic control system rather than the manual or basic electromechanical controls found on simpler autoclaves. The multicolor display helps operators identify cycle status and access operating information, while programmable cycle capabilities allow laboratories to establish sterilization conditions appropriate for different load types.

Tuttnauer designed the EL laboratory platform with both routine and specialized laboratory applications in mind. Standard processing can include solid and glassware loads at approximately 134°C, delicate materials at approximately 121°C, and liquid or waste-liquid cycles at 121°C. Depending on the original configuration, units could also be equipped with additional features such as rapid cooling, vacuum-assisted air removal, complete drying, biohazard exhaust filtration, and other specialized laboratory options.

Because the 3850EL was available in multiple configurations, American Instrument Exchange can help customers confirm the specific features installed on an individual refurbished unit before purchase.

For laboratories operating an older Tuttnauer system already, a refurbished 3850EL can also provide a familiar replacement platform without requiring an immediate move to a significantly more expensive new autoclave.

Tuttnauer 3850EL Common Applications

• Sterilization of microbiological culture media

• Processing of laboratory liquids and aqueous solutions

• Sterilization of laboratory glassware

• Processing of compatible plastic laboratory supplies

• Sterilization of reusable laboratory instruments

• Microbiology and molecular biology workflows

• Biotechnology research and development

• Pharmaceutical research and quality control

• Academic teaching and research laboratories

• Food and beverage testing

• Environmental and industrial laboratories

• Processing of compatible laboratory waste

• Shared laboratory sterilization facilities

Tuttnauer 3850EL Ideal Laboratory Environments

The Tuttnauer 3850EL is particularly well suited for research facilities that need significantly more capacity and programming flexibility than a basic tabletop autoclave provides.

Microbiology laboratories may use the 3850EL for sterilizing culture media, reusable glassware, instruments, and compatible waste. Because liquids behave differently from dry solid loads during sterilization, having an autoclave designed specifically around laboratory applications can be a substantial advantage.

Biotechnology laboratories can use the 3850EL to support media preparation, microbial research, molecular biology, process development, and other workflows requiring routine steam sterilization.

Pharmaceutical research and quality-control environments may also benefit from the combination of programmable cycles, stainless steel construction, electronic documentation, and flexible processing options.

Universities and shared research laboratories are another strong application. A 65-liter chamber can support multiple researchers or teaching groups while remaining considerably smaller than many institutional sterilizers.

Industrial, environmental, agricultural, and food-testing laboratories may also find the 3850EL appropriate for sterilizing reusable labware, media, liquids, and other compatible materials.

For laboratories that need dependable daily sterilization but cannot justify the cost of a new high-capacity autoclave, a professionally refurbished 3850EL can provide an attractive balance of capability and value.

Liquid and Culture Media Sterilization

Liquid sterilization is an important application for the Tuttnauer 3850EL.

Culture media, buffers, aqueous solutions, and other laboratory liquids require different processing considerations than instruments or empty glassware. Liquids heat and cool slowly, and rapid depressurization can cause superheated contents to boil aggressively.

This can result in boil-over, lost media, contaminated chamber surfaces, or damaged containers.

The 3850EL laboratory platform supports liquid sterilization at approximately 121°C and was designed to work with flexible temperature probes for monitoring liquid loads. Appropriate liquid-cycle control can help the sterilizer respond to the actual thermal behavior of the load rather than relying only on chamber temperature.

Depending on configuration, the 3850EL could also be equipped with rapid-cooling systems. These options were designed to reduce the long cooling periods often associated with larger liquid loads and improve overall laboratory throughput.

Not every used 3850EL includes these optional systems, so customers planning intensive liquid-processing applications should confirm the installed configuration with American Instrument Exchange.

Glassware, Plastics, and Solid Laboratory Loads

The Tuttnauer 3850EL is also designed to process a broad range of compatible solid laboratory materials.

Standard glassware and solid-load programs can operate at approximately 134°C, providing efficient processing of appropriate heat-resistant materials.

A lower-temperature 121°C program can be used for compatible delicate materials and plastics that should not be exposed to the higher standard solid-load temperature.

Typical applications may include flasks, laboratory bottles, beakers, reusable utensils, metal instruments, culture vessels, and steam-compatible polymer laboratory supplies.

Because material composition varies widely, laboratories should always verify that plastics, seals, closures, instruments, and other materials are suitable for the selected temperature and steam exposure.

The approximately 15-inch chamber diameter provides useful flexibility for bottles and vessels that may not fit inside smaller benchtop sterilizers.

65-Liter Chamber Capacity and Laboratory Workflow

The Tuttnauer 3850EL provides approximately 65 liters of chamber capacity.

Its cylindrical chamber measures approximately 380 mm in diameter by 500 mm deep, or about 15 inches in diameter by 19.7 inches deep.

That chamber size provides a substantial increase in capacity compared with smaller 20- to 30-liter tabletop sterilizers while maintaining a manageable exterior footprint.

For laboratories running several sterilization cycles each day, chamber volume can directly affect workflow. A larger chamber may allow glassware, bottles, instruments, or other compatible materials to be consolidated into fewer appropriately loaded batches.

The 3850EL's chamber geometry is also well suited to laboratory bottles and Erlenmeyer flasks. Tuttnauer published loading guides for the 3850 platform covering a variety of vessel sizes, illustrating its intended use for serious laboratory media and glassware processing.

Actual capacity depends heavily on bottle dimensions, closures, racks, loading configuration, and required spacing, so laboratories should compare their specific vessels with the chamber dimensions rather than relying only on nominal volume.

For laboratories that regularly exceed the capacity of the 3850EL, Tuttnauer's larger 3870EL platform increases chamber capacity to approximately 85 liters while maintaining the same 380 mm chamber diameter with additional depth.

Programmable Controls and Cycle Documentation

The 3850EL uses a more sophisticated control system than older manual laboratory autoclaves.

Its multicolor display provides operators with clear cycle-status information, while programmable operation allows qualified users to establish cycles for recurring laboratory applications.

Later D-Line configurations provide up to 30 program positions, with factory-set programs based on installed options and remaining programs available for user customization.

The autoclave can retain approximately 200 cycle records in internal memory, providing an accessible history of sterilizer operation.

Applicable configurations can provide USB and Ethernet access to cycle data as well as an optional printer. Tuttnauer also offered remote monitoring and reporting software capable of generating electronic reports with graphs and tables.

These capabilities can be useful in biotechnology, pharmaceutical, academic, and quality-control environments where sterilization activity forms part of a broader laboratory documentation system.

Because control hardware and data interfaces can vary by production generation, customers purchasing a refurbished 3850EL should confirm the exact interface and documentation capabilities of the available unit.

Optional Cooling, Vacuum, Drying, and Biohazard Configurations

One reason the Tuttnauer 3850EL platform remained useful across many laboratory environments was the range of optional configurations available.

Rapid-cooling systems could be added to reduce cooling time for liquid loads. More advanced versions could incorporate cooling coils and compressed air to accelerate liquid turnaround further.

Vacuum systems could provide enhanced air removal for appropriate loads and support applications where gravity displacement alone was insufficient.

Drying options were available for laboratories processing compatible solid materials that needed improved moisture removal following sterilization.

Biohazard configurations could incorporate exhaust-air filtration for applications involving contaminated laboratory materials or waste.

These were optional features rather than universal specifications of every 3850EL. A refurbished unit should therefore be evaluated based on the hardware actually installed rather than assuming that all published D-Line options are included.

American Instrument Exchange can confirm the configuration of the available autoclave before purchase and help determine whether it matches the customer's intended application.

Choosing the Right Laboratory Autoclave

The Tuttnauer 3850EL is a strong choice for laboratories that need greater capacity and flexibility than a small tabletop autoclave but do not require the size of a large floor-standing sterilizer.

The 65-liter chamber provides substantial processing capacity without moving immediately into the 85-liter or larger category.

Load type should be one of the first considerations. Laboratories sterilizing culture media, glassware, liquids, plastics, and routine laboratory supplies can benefit from the 3850EL's laboratory-focused cycle architecture.

Facilities processing significant quantities of liquids should pay particular attention to the exact cooling and probe configuration of the available unit. Rapid cooling can have a major impact on throughput when several liters of hot media must cool before the autoclave can be safely opened.

Laboratories requiring vacuum-assisted processing or biohazard filtration should likewise confirm that those options are installed.

Electrical service also needs to be considered. Tuttnauer currently lists the 3850EL platform in 208 V and 230 V single-phase configurations, so the equipment data plate of a refurbished unit should always be checked before installation.

For laboratories requiring greater capacity, the 3870EL provides approximately 85 liters with a deeper chamber. Facilities with lower throughput may find a smaller laboratory autoclave more economical.

American Instrument Exchange can help customers evaluate chamber capacity, liquids, bottle dimensions, installed options, electrical service, available space, and budget before selecting a refurbished laboratory autoclave.

Tuttnauer 3850EL Key Specifications

Specifications have been compiled from Tuttnauer D-Line technical literature and published information for the 3850EL platform. Because the 3850EL was available with numerous optional systems and in multiple electrical configurations, customers should confirm the individual unit's data plate, installed cooling or vacuum options, temperature probes, documentation hardware, accessories, and electrical requirements before purchase.

Installation and Utility Requirements

The Tuttnauer 3850EL requires more installation planning than a small 120 V tabletop autoclave.

The autoclave measures approximately 28.3 inches wide × 21.3 inches high × 30.1 inches deep and weighs approximately 264 pounds before process water and the laboratory load are added.

A sturdy, level equipment bench or stand capable of supporting the operating weight is required.

Tuttnauer lists the 3850EL platform for 208 V or 230 V single-phase, 50–60 Hz electrical service, depending on configuration. The individual equipment data plate should always be used to determine the actual voltage, current, and electrical connection required for the refurbished unit.

The standard benchtop EL platform incorporates a manually filled water reservoir, helping reduce installation requirements compared with large sterilizers dependent on central steam.

Utility needs can change substantially when optional features are installed. Rapid-cooling systems may require water or compressed air, while other configurations can incorporate additional components.

Customers should therefore verify the exact installed options before planning utilities.

Adequate space should be provided for ventilation, front-door movement, loading and unloading, maintenance, and service access.

Water quality should meet appropriate Tuttnauer recommendations. Excessive minerals can contribute to chamber scaling, heater deposits, valve contamination, and increased maintenance requirements.

Why Buy a Refurbished Tuttnauer 3850EL from American Instrument Exchange?

A refurbished Tuttnauer 3850EL can provide a cost-effective way for laboratories to acquire a 65-liter programmable laboratory autoclave without the capital expense associated with a comparable new high-capacity system.

American Instrument Exchange reconditions, inspects, and tests used laboratory autoclaves before shipment. Evaluation can include chamber heating, temperature and pressure performance, controls, cycle operation, safety systems, valves, water handling, displays, and installed optional systems as applicable to the individual configuration.

That process is particularly important with sophisticated laboratory autoclaves. Two 3850EL units may have the same basic chamber but differ substantially in cooling, vacuum, drying, filtration, documentation, or electrical configuration.

American Instrument Exchange can help customers understand exactly what is included with the available unit before purchase.

For laboratories facing an unexpected autoclave failure, availability can also be critical. Media preparation, glassware processing, waste decontamination, and other laboratory operations can quickly become bottlenecks when sterilization capacity is lost. An in-stock refurbished autoclave can offer a faster route back to normal operations than waiting for a newly manufactured large-capacity system.

American Instrument Exchange also supplies brand-new Tuttnauer laboratory autoclaves, allowing customers to compare refurbished and current-generation equipment based on application, required features, warranty preferences, budget, and project timeline.

Frequently Asked Questions

What is the Tuttnauer 3850EL?

The Tuttnauer 3850EL is an automatic front-loading laboratory steam autoclave with approximately 65 liters of chamber capacity. It was designed for scientific applications including liquids, media, glassware, compatible plastics, solid materials, and laboratory waste.

What is the chamber capacity of the Tuttnauer 3850EL?

The 3850EL provides approximately 65 liters of chamber volume.

What are the chamber dimensions?

The cylindrical chamber measures approximately 380 mm in diameter by 500 mm deep, or about 15 inches in diameter by 19.7 inches deep.

What are the exterior dimensions of the Tuttnauer 3850EL?

Published dimensions are approximately 720 mm wide × 540 mm high × 765 mm deep, or about 28.3 × 21.3 × 30.1 inches.

Can the Tuttnauer 3850EL sterilize culture media and liquids?

Yes. Liquid sterilization is one of the primary applications of the 3850EL laboratory platform. Standard liquid programs operate around 121°C, and flexible load-temperature probes are supported.

Can the 3850EL sterilize laboratory glassware?

Yes. Glassware and compatible solid laboratory materials are common applications, with standard high-temperature processing at approximately 134°C.

Can the 3850EL sterilize plastic laboratory supplies?

Compatible steam-resistant plastics can be processed using appropriate lower-temperature cycles, commonly around 121°C. Material compatibility should always be verified before sterilization.

Does the Tuttnauer 3850EL have programmable cycles?

Yes. The EL laboratory platform provides programmable electronic cycle control. The number and type of available programs may vary by control generation and installed options.

Does the 3850EL store cycle records?

Applicable D-Line configurations can store approximately 200 cycles in internal memory for later review or download.

Does the Tuttnauer 3850EL have rapid cooling?

Rapid cooling was available as an option on the 3850EL platform but should not be assumed to be installed on every unit. American Instrument Exchange can confirm the specific configuration of the available autoclave.

Does the 3850EL have a vacuum pump?

A vacuum system was available as an optional configuration. Customers requiring pre-vacuum processing should confirm that the available refurbished unit includes the necessary vacuum hardware.

Does the 3850EL have a drying cycle?

Enhanced or complete drying capability was available on appropriately configured versions. Exact drying hardware and capabilities should be confirmed for the individual unit.

Can the 3850EL be configured for biohazard waste?

Tuttnauer offered biohazard and exhaust-filtration options for the laboratory D-Line. Customers requiring this capability should confirm that the refurbished unit is equipped with the appropriate filtration system.

What electrical service does the 3850EL require?

Tuttnauer lists the platform in 208 V and 230 V single-phase, 50–60 Hz configurations. The individual equipment data plate should be checked before installation.

How much does the Tuttnauer 3850EL weigh?

Published specifications list a weight of approximately 120 kg, or 264 pounds.

Is the 3850EL a tabletop autoclave?

Tuttnauer describes the 3850EL as a benchtop/front-loading laboratory autoclave. Because of its approximately 264-pound weight and 65-liter chamber, it requires a substantial equipment bench or suitable support structure rather than an ordinary lightweight countertop.

What is the difference between the Tuttnauer 3850EL and 3870EL?

The primary difference is chamber capacity and depth. The 3850EL provides approximately 65 liters with a 380 × 500 mm chamber, while the 3870EL increases capacity to approximately 85 liters with the same 380 mm diameter and a deeper 690 mm chamber.

What is the difference between the 3850EL and 3850ELV?

The 3850EL is a horizontal front-loading benchtop autoclave. The 3850ELV uses a vertical top-loading configuration with the same general 65-liter chamber capacity.

Is a refurbished Tuttnauer 3850EL a good choice for a biotechnology laboratory?

It can be an excellent choice for laboratories that need substantial capacity for culture media, liquids, glassware, and other routine laboratory materials but want to reduce equipment acquisition cost compared with buying new.

Does this refurbished Tuttnauer 3850EL include a warranty?

Unless otherwise specified, this refurbished 3850EL includes a 90-day warranty from American Instrument Exchange.

Does American Instrument Exchange also sell new Tuttnauer laboratory autoclaves?

Yes. American Instrument Exchange supplies both refurbished laboratory sterilizers and brand-new Tuttnauer autoclaves, allowing laboratories to compare legacy and current-generation equipment based on capacity, application, features, warranty, and budget.