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Benchtop Acrylic 1 ISO 6 16.625" 16.125" 11.625" Adjust-A-Shelf™ 3950-51D 67154 $1,035 1-3 Days 2
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Benchtop Acrylic 3 ISO 6 16.625" 16.125" 11.625" Adjust-A-Shelf™ 3950-43D 67169 $2,030 18-24 Days 3
Benchtop Acrylic 3 ISO 6 22.125" 16.125" 11.625" Adjust-A-Shelf™ 3950-44D 67170 $2,485 1-3 Days 4
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Benchtop Acrylic 3 ISO 6 22.125" 22.125" 11.625" Adjust-A-Shelf™ 3950-42D 67168 $2,636 1-3 Days 5
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Benchtop Acrylic 4 ISO 6 22.125" 22.125" 11.625" Adjust-A-Shelf™ 3950-23 81606 $3,381 1-3 Days 6
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Benchtop Acrylic 2 ISO 6 16.625" 16.125" 11.625" Adjust-A-Shelf™ 3950-40D 67160 $1,531 1-3 Days 7
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Benchtop Acrylic 2 ISO 6 22.125" 16.125" 11.625" Adjust-A-Shelf™ 3950-41D 67161 $1,794 1-3 Days 8
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Benchtop Acrylic 2 ISO 6 22.125" 22.125" 11.625" Adjust-A-Shelf™ 3950-39D 67159 $1,900 1-3 Days 9
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Benchtop Amber Acrylic 1 ISO 6 16.625" 16.125" 11.625" Adjust-A-Shelf™ 3950-81D 67155 $1,048 1-3 Days 10
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Benchtop Amber Acrylic 3 ISO 6 22.125" 16.125" 11.625" Adjust-A-Shelf™ 3950-74D 67173 $3,097 18-24 Days 11
Benchtop Amber Acrylic 2 ISO 6 22.125" 22.125" 11.625" Adjust-A-Shelf™ 3950-69D 67162 $2,246 13-15 Days 12
Benchtop Static Dissipative PVC 1 ISO 6 16.625" 16.125" 11.625" Adjust-A-Shelf™ 3950-21D 67153 $1,346 1-3 Days 13
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Benchtop Static Dissipative PVC 3 ISO 6 16.625" 16.125" 11.625" Adjust-A-Shelf™ 3950-13D 67166 $2,826 1-3 Days 14
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Benchtop Static Dissipative PVC 3 ISO 6 22.125" 16.125" 11.625" Adjust-A-Shelf™ 3950-14D 67167 $3,236 1-3 Days 15
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Benchtop Static Dissipative PVC 3 ISO 6 22.125" 22.125" 11.625" Adjust-A-Shelf™ 3950-12D 67165 $3,434 1-3 Days 16
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Benchtop Static Dissipative PVC 4 ISO 6 22.125" 22.125" 11.625" Adjust-A-Shelf™ 3950-22 81605 $4,397 1-3 Days 17
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Benchtop Static Dissipative PVC 2 ISO 6 16.625" 16.125" 11.625" Adjust-A-Shelf™ 3950-10D 67157 $1,992 1-3 Days 18
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Benchtop Static Dissipative PVC 2 ISO 6 22.125" 16.125" 11.625" Adjust-A-Shelf™ 3950-11D 67158 $2,334 1-3 Days 19
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Benchtop Static Dissipative PVC 2 ISO 6 22.125" 22.125" 11.625" Adjust-A-Shelf™ 3950-09D 67156 $2,472 1-3 Days 20
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Floor Acrylic 4 ISO 6 22.125" 22.125" 11.625" Adjust-A-Shelf™ 3950-45D 67177 $3,381 1-3 Days 21
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Floor Acrylic 5 ISO 6 16.625" 16.125" 11.625" Adjust-A-Shelf™ 3950-49D 67187 $3,456 1-3 Days 22
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Floor Acrylic 5 ISO 6 22.125" 16.125" 11.625" Adjust-A-Shelf™ 3950-50D 67188 $3,870 1-3 Days 23
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Floor Acrylic 5 ISO 6 22.125" 22.125" 11.625" Adjust-A-Shelf™ 3950-48D 67186 $4,112 1-3 Days 24
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Floor Acrylic 6 ISO 6 16.625" 16.125" 11.625" Adjust-A-Shelf™ 3950-31D 67196 $4,235 1-3 Days 25
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Floor Acrylic 6 ISO 6 22.125" 22.125" 11.625" Adjust-A-Shelf™ 3950-30D 67195 $4,684 18-24 Days 26
Floor Acrylic 8 ISO 6 22.125" 22.125" 11.625" Adjust-A-Shelf™ 3950-33D 67204 $6,747 1-3 Days 27
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Floor Acrylic 10 ISO 6 22.125" 16.125" 11.625" Adjust-A-Shelf™ 3950-38D 67215 $7,743 1-3 Days 28
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Floor Acrylic 10 ISO 6 22.125" 22.125" 11.625" Adjust-A-Shelf™ 3950-36D 67213 $8,233 1-3 Days 29
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Floor Amber Acrylic 4 ISO 6 22.125" 22.125" 11.625" Adjust-A-Shelf™ 3950-75D 67180 $3,894 18-24 Days 30
Floor Amber Acrylic 5 ISO 6 22.125" 16.125" 11.625" Adjust-A-Shelf™ 3950-80D 67191 $4,704 1-3 Days 31
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Floor Amber Acrylic 5 ISO 6 22.125" 22.125" 11.625" Adjust-A-Shelf™ 3950-78D 67189 $4,784 18-24 Days 32
Floor Amber Acrylic 6 ISO 6 22.125" 22.125" 11.625" Adjust-A-Shelf™ 3950-60D 67198 $5,420 18-24 Days 33
Floor Amber Acrylic 10 ISO 6 16.625" 16.125" 11.625" Adjust-A-Shelf™ 3950-67D 67217 $7,781 1-3 Days 34
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Floor Amber Acrylic 10 ISO 6 22.125" 22.125" 11.625" Adjust-A-Shelf™ 3950-66D 67216 $8,539 1-3 Days 35
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Floor Static Dissipative PVC 4 ISO 6 16.625" 16.125" 11.625" Adjust-A-Shelf™ 3950-16D 67175 $3,667 1-3 Days 36
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Floor Static Dissipative PVC 4 ISO 6 22.125" 16.125" 11.625" Adjust-A-Shelf™ 3950-17D 67176 $4,144 1-3 Days 37
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Floor Static Dissipative PVC 4 ISO 6 22.125" 22.125" 11.625" Adjust-A-Shelf™ 3950-15D 67174 $4,397 1-3 Days 38
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Floor Static Dissipative PVC 5 ISO 6 16.625" 16.125" 11.625" Adjust-A-Shelf™ 3950-19D 67184 $4,493 1-3 Days 39
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Floor Static Dissipative PVC 5 ISO 6 22.125" 16.125" 11.625" Adjust-A-Shelf™ 3950-20D 67185 $5,035 1-3 Days 40
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Floor Static Dissipative PVC 5 ISO 6 22.125" 22.125" 11.625" Adjust-A-Shelf™ 3950-18D 67183 $5,348 1-3 Days 41
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Floor Static Dissipative PVC 6 ISO 6 22.125" 16.125" 11.625" Adjust-A-Shelf™ 3950-02D 67194 $6,138 1-3 Days 42
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Floor Static Dissipative PVC 6 ISO 6 22.125" 22.125" 11.625" Adjust-A-Shelf™ 3950-00D 67192 $6,517 1-3 Days 43
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Floor Static Dissipative PVC 8 ISO 6 16.625" 16.125" 11.625" Adjust-A-Shelf™ 3950-04D 67202 $6,985 18-24 Days 44
Floor Static Dissipative PVC 8 ISO 6 22.125" 22.125" 11.625" Adjust-A-Shelf™ 3950-03D 67201 $8,256 1-3 Days 45
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Floor Static Dissipative PVC 10 ISO 6 16.625" 16.125" 11.625" Adjust-A-Shelf™ 3950-07D 67211 $9,155 1-3 Days 46
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Floor Static Dissipative PVC 10 ISO 6 22.125" 16.125" 11.625" Adjust-A-Shelf™ 3950-08D 67212 $10,070 1-3 Days 47
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Floor Static Dissipative PVC 10 ISO 6 22.125" 22.125" 11.625" Adjust-A-Shelf™ 3950-06D 67210 $10,706 1-3 Days 48
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Custom-configured product. Contact Terra by phone, chat or email for a project-specific quote.
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Product Details
Product Details
  • Available ISO Rated Designs: ISO 6, ISO 7, ISO 8
  • Nitrogen-purge desiccator cabinet provides versatile low-humidity storage down to 0% RH
  • Designed for moderate to critical RH control applications that require automatic low-humidity control
  • Desiccator cabinet is pre-wired for integration with automatic humidity control system
  • Ideal for storing moisture-sensitive materials: microelectronics, medical devices, pharmaceutical powders
  • Upgrade to IsoDry® or Nitroplex™ for faster recovery times and more uniform low-humidity conditions
  • Adjust-A-Shelf desiccator cabinets are designed for storage of moisture-, ESD-, and contamination-sensitive materials that require automatic low-humidity set-point control.
  • How Dual Purge™ and NitroWatch™ Work:
  • Dual Purge™ and NitroWatch™ are separate modules that mount on top of the desiccator cabinet. The combined system provides automatic humidity control from ambient down to 0% RH and helps conserve nitrogen.
  • NitroWatch™ monitors and displays RH readings from a single sensor mounted inside the cabinet. The Dual Purge™ uses two gas flow settings (high/low) to rapidly reach and then maintain the user-specified RH set-point.
  • High-flow is triggered when RH is above set-point, or when a door opens (triggered by magnetic door sensors). The high-flow setting helps expedite set-point recovery.
  • The influx of nitrogen gas pressurizes the cabinet, causing moisture-laden air to be displaced and released through the automatic relief/bleed (RB) valves. This steady bleed causes the concentration of dry nitrogen gas inside the desiccator to increase until the desired RH level is reached.
  • When the RH set-point is reached, the system reverts from high-flow to low-flow nitrogen gas supply to maintain the set-point and conserve nitrogen. When RH climbs above the set-point, the system re-activates high-flow to accelerate moisture removal.
  • NOTE: Because this system uses only 1 RH sensor, the displayed RH reading may not accurately reflect the RH in other chambers of the cabinet.
  • ESD-Safe Design:
  • Grounding is not standard on all designs, choose static-control options/designs to protect sensitive materials against ESD.
  • Static-dissipative PVC (SD-PVC) design features bonded dissipative layers that resist abrasion and retain surface resistivity of 106 - 108 ohms/square indefinitely (unlike spray-on coatings that can wear off after a few years). SD-PVC also eliminates static-cling to help maintain clean surfaces.
  • Conforms to DOD Handbook 263, MIL-SPEC 1686 and 1772 with selection of proper accessories.
  • Cabinet Design:
  • Isolated chambers: The Adjust-A-Shelf desiccator cabinet is compartmentalized into isolated chambers to improve moisture control and recovery. The multiple air spaces are independent and thus RH in one chamber is unaffected by access to adjacent chambers.
  • Rear plenum for improved gas distribution: The gas inlet feeds into a narrow wall plenum adjacent to all chambers. The plenum pressurizes and simultaneously distributes gas through small perforations in the wall to each chamber in the cabinet.
  • All wiring and gas ports are factory installed for turn-key operation with Dual Purge™ and NitroWatch™ automatic RH control system. Each chamber includes a magnetic door sensor that connects to a central manifold. Wiring to connect the RH sensor is also pre-installed.
  • Innovative wall-fusing technology creates a rigid, durable structure for improved weight capacity and resistance to high-frequency vibrations.
  • Automatic RB™ (Relief/Bleed) valves on each chamber relieve excess pressure inside the cabinet without allowing outside air or contaminants inside.
  • Stainless steel wire racks allow shelves to be positioned at 1" increments to accommodate different part sizes; shelves can also be removed and used as carrying trays.
  • Door Design:
  • Access doors with 304 stainless steel reinforced frames extend desiccator cabinet's service life and provide a tight seal.
  • Santoprene® "e"-shape non-outgassing rubber gasket firmly compresses to eliminate leaks. The one-piece resilient rubber gasket maintains its shape after compression and won't flatten, warp, crack, or degrade like ordinary foam gasket. Gasket is also mechanically attached to the door frame to avoid adhesive failure common with gasket tapes.
  • Heavy-duty lift latches prevent metal-on-metal scraping common with rotary latches; chrome-plated included standard; upgrade to all-stainless steel (304 or 316) to minimize scratching, corrosion and contamination resulting over time that can occur with chrome-plated latches.
  • Durable 304 stainless steel hinges eliminate corrosion, flaking, and contamination that commonly occur with ordinary chrome-plated hinges.
  • Order replacement door(s) to ensure uninterrupted service should a door ever be damaged and require replacement.
  • Optional Accessories:
  • Nitrogen generator: provides a continuous, reliable supply of pure, dry nitrogen to eliminate dependence on bulky canisters.
  • Locking lift latches help protect against unauthorized access - specify one per chamber.

Marks & Listings: CE, UL, ULC

Adjust-A-Shelf™ Nitrogen Desiccator Cabinets
Standard Features
  • A Grounding Terminals
    Standard on all static-dissipative PVC to prevent ESD
  • B Plenum Chamber
    Located in rear of cabinet, plenum ensure uniform flow of nitrogen gas to all chambers; minimizes moisture migration
  • C Stainless Steel-Framed Doors with One-Piece Gasket
    "e"-profile gasket mechanically attached to stainless steel reinforcement frame to prevent outgassing adhesives; one-piece design won’t slough or separate
  • D Stainless Steel Wire Racks
    Allow positioning of racks and trays on 1” increments
  • E Stainless Steel Shelf
    One included; order additional solid or perforated shelves or removable trays
  • F Grounded Door Latch
    Prevents ESD damage to stored parts (standard on SDPVC cabinets)
Optional Features
  • 1 Dual Purge™ System
    Provides a variable flow of nitrogen purge gas: high when you need it, low to conserve flow
  • 2 NitroWatch® RH Controller
    Monitors internal humidity; activates a high-flow purge when RH climbs above set-point level
  • 3 Door Sensor Switches
    Activate high-flow purge when a door opens to recover RH set point
  • 4 Automatic RB® Valve
    Prevents overpressure; acts as a check valve (one included per chamber)
  • 5 Stand
    Powder-coated or 304 stainless steel; 4” or 12” high; casters available
  • 6 Nitrogen Generator
    Nitrogen generator provides un uninterrupted supply of nitrogen up to 99% pure to eliminate reliance on bulky canisters

Not Shown: Flowmeter - Flowmeter included for manual regulation of flow rate (choose Dual Purge/NitroWatch systems for automated control)

Learn More About Adjust-A-Shelf Desiccators

  • Maximum Drying Power in a Nitrogen Desiccator Cabinet
  • Adjustable base stands Watch Terra's Universal Base Stand Video
  • Desiccator ISO Rating Chart
  • Smart® Humidity Module upgrade tutorial Installing Terra's ValuLine™ Desiccator Smart® Controller
  • Adjust-A-Shelf Desiccators
  • IsoDry® Desiccator Cabinet by Terra Universal
  • 3-Chamber Static-Dissipative PVC Desiccator Cabinet ISO 6 Three-Chamber SDPVC Desiccator Cabinet
  • Benchtop Adjust-A-Shelf Desiccator Cabinet Static-Dissipative PVC Adjust-A-Shelf Desiccator Cabinet
  • plastic desiccator cabinet with 10 chambers and automatic humidity control system ISO-Rated Plastic Desiccator Cabinet with Automatic RH Control System and Nitrogen Generator
  • Static Dissipative PVC Open Desiccator Cabinet Desiccator Cabinet, Adjust-A-Shelf; SDPVC, Nominal 12"W x 12"D x 12"H
  • Stainless steel cleanroom cart with built-in amber acrylic desiccator cabinet Clean, Dry, ESD-Safe Transport Solutions
  • Smart desiccator cabinet in acrylic with 304 stainless steel framed door Smart Desiccator Cabinet with Automatic RH Control
Adjustable base stands
Smart® Humidity Module upgrade tutorial
Features & Benefits

Features and Benefits

Learn More: Terra's Quick Ship Information

Here at Terra Universal, we’ve made it our mission to offer the best possible lead times in the industry.  In addition to aggressive stocking programs and streamlined fulfillment, Terra Universal also offers several services that ensure you receive your products as quickly as possible.

Terra Quick Ship Plus Service

Terra's QuickShip Program includes thousands of in-stock, ready-to-ship, ready-for-delivery products.

Examples of Quick Ship Plus-eligible products include:

Terra's Quick Ship Plus service provides the necessary resources to guarantee the required delivery date.

The Quick Ship Plus service is available for orders of in-stock, turnkey products that do not require any additional assembly before shipment. This service guarantees that the order will be delivered on or before the date indicated, or the charges for the Quick Ship Plus service will be refunded in full upon the client's approved request.

This guarantee does not cover any direct, special, consequential, or other damages, and is strictly limited to 100% of the amount paid for the Quick Ship Plus service. In alignment with FasTrak programs, In the case that shipment delays arise due to factors that are within Terra's control, Terra will refund up to 100% of the Quick Ship Plus fees. This guarantee does NOT cover direct, special, consequential or other damages and is strictly limited to 100% of the amount paid for Quick Ship Plus service.

Terra Sales and Customer Service

Mon - Fri, 09:00 AM - 08:00 PM PST

Tel: +1 (714) 578-6100

Email: [email protected]

Critical Environment Solutions

Terra's mission is to help customers in highly regulated industries transform the world with critical environment solutions that improve health, safety, performance, and yields. These environments may comply with stringent UL, ISO, IEST, ASTM and OSHA standards and local requirements.

Reinforced Doors with Non-adhesive Gaskets

Stainless steel door frames extend desiccator life; one-piece fused gaskets are non-outgassing, will not creep or sag

Fully Grounded ESD-Safe Desiccator Cabinet Designs

Grounded, static-dissipative desiccator cabinets safely discharge surface charges to ground, eliminating the risk of electrostatic discharge and attractive forces that seize particles. Conductive tape connects the shelves, racks and doors to the grounding bar at the top of the cabinet.

Flow Meter Helps Monitor and Control Nitrogen Gas Flow

A flow meter is a low-cost option suitable for non-critical applications or small desiccators that do not require much inert gas. However, manual control is more prone to human error and not as efficient with the consumption of inert gas, which can lead to damaged products and high operating costs.

Durable Embedded Static-Dissipative Layers

Terra's SDPVC features bonded dissipative layers that resist abrasion. SDPVC desiccators retain their surface resistivity of 106 - 108 ohms/square indefinitely (unlike spray-on coatings that can wear off after a few years), protecting your materials against ESD damage. Further, the control of static charges eliminates particle attractions, helping maintain clean surfaces.

Desiccator Plenum Chamber For Uniform Gas Distribution

Multi-chamber desiccator cabinets include a perforated plenum to minimize back fill, ensure uniform gas distribution to all chambers and increase cabinet strength

Available Stainless Steel Shelves and Trays

Adjustable, non-contaminating shelves and trays slide on stainless steel racks, allowing easy parts access (one perforated shelf included)

High Caliber Hardware

Seemingly small details like latches, ports, glides and hinges are often overlooked or ignored by other manufacturers, and later become the point of costly recurring maintenance or equipment failure. Terra’s products are made of long lasting, cleanroom compatible, top tier hardware. Individual components are carefully designed and rigorously tested to guarantee the highest quality, durability, and craftsmanship.

Automatic Relief/Bleed Valve

Terra's Automatic Relief/Bleed (RB) Valve opens up at 0.01 PSI, relieving overpressure that could damage desiccators; also works as a check valve to prevent influx of room air.

Doors - The First Failure Point of a Desiccator Cabinet

Terra’s stainless steel door frames eliminate the need for internal reinforcements, which create particle surfaces and compromise cleaning. Unlike other doors with glue-on anti-bow pieces, Terra’s doors use no adhesives. This eliminates particle traps, sources of outgassing—and extends the strength and service life of the desiccator.

Complete Order Transparency

Using Terra’s OnTrak system, our customers can view real-time production updates, receive shipment notifications and track their orders until they arrive at their facility

Product Prices Honored Worldwide

From Argentina to Zimbabwe, Terra's customers pay a single web-listed price for each product

Wide Selection of Global Shipping Options

Terra offers a broad range of global shipping services including door-to-door and white glove delivery. Each product is safely packaged in a heat-treated wooden crate that meets international shipping standards.

Catalog of CE-Marked Products

Terra offers over 1,700 CE-marked products configured for international voltage requirements

Products Tailored to Your Cleanroom Environment

Provide Terra with your desired ISO Grade™ design. We will tailor the product to meet your criteria and certify it with a report appended to your invoice. Certificate includes all the necessary information to streamline audits and facility compliance.

Rapid Drying of Hygroscopic Material

Terra's gas-purged desiccators utilize a rapid flow of inert nitrogen to quickly dry hygroscopic samples and components
Available Accessories
Popular Accessories
For a full list of accessories, select a product then click Choose Accessories on that product page.
  • Universal Base Stands Offer Excellent Versatility

    Universal base stands support and stabilize various equipment sizes. Adjustable telescoping members allow for a precise fit. Choose between stainless and powder-coated steel to fit your desired application.
  • Universal Stand Adjusts to Fit a Wide Range of Equipment

    Terra's Universal stands easily adjust to fit a wide range of equipment. Multi-purpose stand frames are suitable for many types of cleanroom equipment, including refrigerators, freezers, incubators, ovens, and vacuum chambers.
  • 3-inch Diameter Caster Set

    Casters are easily retrofitted for mobility. Products can be rolled out of the way when cleaning or relocated as workflow changes.
  • Laboratory Nitrogen Generator

    Terra’s Nitrogen Generators provide a continuous, reliable supply of clean, dry nitrogen up to 99% pure to eliminate dependence on bulky canisters to operate desiccators and glove boxes.
  • Desiccator Cabinet Ionizing Module

    Ionizing modules are available for desiccator cabinets, glove boxes and other enclosures to ensure static-safe storage and processing (shown: ionizing unit on 2-chamber desiccator)
  • Universal Adjustable Base Stands for Desiccator Cabinets and Cleanroom Equipment

    Stainless steel or powder-coated steel base stands easily adjust to fit cabinets, desiccators and cleanroom equipment of any size or shape. Stands raises equipment to ergonomic height to ease disinfection and sample monitoring. BioSafe design suitable for any cleanroom or lab environment.
  • Humidity and Temperature Data Logger

    Records storage conditions inside a Desiccator chamber-adjustable logging interval (hours to months), USB port for easy data download in several formats.
  • Clean, Dry, ESD-Safe Transport Solutions

    Configure BioSafe® cleanroom carts with built-in desiccator cabinets for highly sensitive biomedical materials. The nitrogen desiccator cabinet adds an extra layer of protection to provide a dry, inert environment. Amber acrylic filters out UV and blue light.
  • Dual Purge™ and NitroWatch™ Work Together to Fully Automate RH Control

    Terra's Dual Purge™ and NitroWatch™ operate in tandem to precisely and automatically control the flow of nitrogen and maintain a preset humidity level (from ambient to 0% ± 1.5% RH), no matter how operating conditions may change.
  • Data Logging with 113,000 Readings at User Defined Intervals

    Terra's Smart® IsoDry® Nitro-Watch™ logs RH, temp, door open/close, purge on/off, and sensor removal/attachment. The max data file size is roughly 4 MB or 113,000 readings. This is approximately 32 hours of data when logging at 1 second intervals, 2 weeks at 10 second intervals, 6 weeks at 30 second intervals, or 12 weeks at 1 minute intervals. When the system reaches the 4MB limit, data begins to wrap, overwriting oldest data with new.
  • Plug & Play Data Logging

    Plug in a USB flash drive to your Smart® IsoDry® Nitro-Watch™ to transfer data in .CSV format. No software required.
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  • FasTrak 24/7 provides a 24/7 commitment to meet the shipping date YOU specify, regardless of quoted lead times.
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 * Terra's FasTrak services limited guarantee: to ship on the ESD or date specified OR to refund up to 100% of FasTrak charges. This guarantee covers no direct, special, consequential or other damages and is strictly limited to up to 100% of the amount paid for FasTrak service. When a specified ship date is missed due to factors outside Terra's control (vendor performance, deliveries by shipping companies, etc.) and random factors such as accidents, the credit of up to 100% of the FasTrak 24/7 may not apply. FasTrak service requested after order placement will be quoted and accepted based on available time remaining before required ship date.