Adjust-A-Shelf Desiccator Cabinets

Desiccator; Adjust-A-Shelf™, Static Dissipative PVC, 3 Chambers, 24" W x 18" D x 36" H

Control RH with dry nitrogen gas, flowmeter included, select automatic controller on checkout
Plenum evenly distributes gas to chambers with one set-point for entire cabinet
Static-dissipative PVC chambers with grounding block reduce static-induced dust attraction
Stainless steel reinforced doors and LiftLatches™ are the strongest, most durable doors available
Doors include Santoprene® “e”-shape non-outgassing rubber gasket to eliminate leaks

• Chamber Dimensions: 22.125" W x 16.125" D x 11.625" H

• Material: Static Dissipative PVC

• Opening Dimensions: 21.875" W x 10.75" H

• Number of Chambers: 3

• Model: Adjust-A-Shelf™

• Design: Benchtop

• Chamber Width: 22.125"

• Chamber Depth: 16.125"

• Chamber Height: 11.625"

• Humidity Control: Cabinet Level

• Door Design: Leak Tight

• Unit of Measure: EA

Terra Part #: 3950-14D

Manufactured By: Terra Universal

Warranty: 1 year parts, 90 days labor

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Terra Part # 3950-14D

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Desiccator; Adjust-A-Shelf™, Static Dissipative PVC, 3 Chambers, 24" W x 18" D x 36" H

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Details & Specs

Manuals & Resources

Desiccator Cabinets and Humidity Controllers

This manual provides installation and operating instructions for the following Terra desiccator lines: Adjust-A-Shelf, Pass-through, Wafer Box, Kitticator, Tape and Reel, Farracator and Series 100 through 400. The manual also covers the following RH Controllers: Flowmeter, Dual Purge System and NitroWatch.

Desiccator Installation and Cleaning

Why Desiccator Storage?

A technical overview to how desiccators extend shelf lives and increase product yields.

Why Terra Desiccators?

Compare the many design and fabrication features that make Terra desiccators the most efficient and durable cabinets available.

Learn More About Adjust-A-Shelf Desiccators

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Desiccators: Features and Design overview
Leveling your Desiccator
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Clean, Dry, ESD-Safe Transport Solutions
IsoDry® Desiccator Cabinet by Terra Universal
Smart Desiccator Cabinet with Automatic RH Control

Nitrogen-purged desiccator cabinets maintain clean, dry, static-safe conditions to reduce defects (shown with optional stand, gas controllers, N2 generator) | 3950-36D displayed Plastic Desiccator Cabinet with Automatic RH Control System and Nitrogen Generator Available in three chamber sizes, this 10-chamber Adjust-A-Shelf desiccator includes a flowmeter and relief/bleed valve for nitrogen purging, which protects moisture-sensitive materials; static-dissipave PVC constructiono eliminates static charges and particulate attraction.

Single chamber Static-Dissipative PVC Adjust-A-Shelf Desiccator Cabinet | 3950-21D displayed Static-Dissipative PVC Adjust-A-Shelf Desiccator Cabinet Dissipative PVC removes surface charges and dust attraction. Includes flowmeter and relief bleed for nitrogen purging, reinforced doors with non-adhesive gasketing, racks and shelf, and perforated plenum chamber for uniform gas distribution.

Static-dissipative PVC adjustable-shelf desiccator cabinets eliminate static charges and the particles they attract Three-Chamber SDPVC Desiccator Cabinet Three- chamber Adjust-A-Shelf Desiccator Cabinet with static-dissipative PVC construction eliminates static-charge build-up; includes stainless steel-reinforced doors, flowmeter and relief/bleed valve.

Adjust-A-Shelf Desiccators Terra Universal's adjustable-shelf desiccator cabinets store delicate components in a nitrogen-purged, clean environment to prevent degradation caused by moisture exposure. Automated humidity control systems allow selection of a target RH set point.

Desiccators: Features and Design overview Terra's nitrogen-purged desiccator cabinets meet dry storage requirements as low as 1% relative humidity. Standardization simplifies component upgrade, retrofit and replacement. Terra's Smart controllers allow setpoint control and even multiplexed purging for the most critical humidity requirements.

Leveling your Desiccator Learn how to properly level your plastic or stainless steel desiccator cabinet, as well as instructions to align the doors.

Adjust-A-Shelf desiccator cabinet, single chamber static-dissipative PVC. Product details may differ. | 3950-21A displayed Desiccator Cabinet, Adjust-A-Shelf; SDPVC, Nominal 12"W x 12"D x 12"H

All-stainless steel cleanroom cart built-in amber acrylic desiccator cabinet | 9600-14 displayed 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.

IsoDry® desiccator cabinets are the latest innovation in desiccators from Terra Universal; patented gas dilution fan modules achieve high RH uniformity and rapi IsoDry® Desiccator Cabinet by Terra Universal IsoDry® desiccator cabinets are the latest innovation in desiccators from Terra Universal. Many conventional desiccators depend on unassisted gas displacement. This mode of operation can significantly inhibit RH control, drive up operating costs, and increase the risk of damaged stored materials. The driving concept behind IsoDry is that unassisted gas displacement is significantly slower without a substantial physical force to actively mix nitrogen gas through the entire cabinet.

Desiccator cabinet in acrylic with Smart RH controller; 2 chambers, 24”W x 18”D x 48”H, 304 stainless steel framed door and lift latches and adjustable shelves | 3950-47D displayed Smart Desiccator Cabinet with Automatic RH Control Desiccator cabinet in economical acrylic with corrosion-resistant 304 stainless steel framed door and ergonomic lift latches. RH control in this desiccator is made fully-automatic with the Smart controller that maintains a low RH-set point for safe storage.

Features and Benefits

ESD Protection

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Static Control Solutions in Nitrogen-Purged Desiccator Cabinets

Because the likelihood of ESD (electrostatic discharge) increases in a low humidity environment, Terra strongly urges that you consider these measures as part of your static control program.

Static-Dissipative PVC

Acrylic, commonly used in storage enclosures, is a prolific static generator. Wiping an acrylic desiccator generates surface charges that can discharge onto ESD-sensitive components. Static-dissipative PVC prevents this danger.

This material not only dissipates static charges safely but also eliminates the particle attraction that static charges create. Surfaces stay clean, inside and out, making this material perfect for use in cleanrooms.

Because static-dissipative PVC is transparent and highly durable, it can be used in place of acrylic in nearly any application, desiccators included. It features a surface resistivity of approximately 10^7 ohms per square and is completely noncontaminating—with no measurable outgassing—and it resists a wide range of chemicals.

Note: To protect Static-Dissipative PVC surfaces, desiccators made of this material must include stainless steel shields installed at the bottom of each chamber.

Static-Neutralizing Ionizing Nozzles

By ionizing nitrogen molecules as they pass through the desiccator plenum wall, ionizing nozzles neutralize electrostatic charges on all interior surfaces. They provide practical ESD control for charged nonconductive materials, which cannot dissipate charges to ground. And because they eliminate static attractive forces, they help control contamination: in a statically neutral environment, any airborne particles that enter a desiccator are more likely to remain airborne and to be purged out of the cabinet.

Desiccator Grounding

All Terra desiccators made of static-dissipative PVC feature grounding terminals on a standard basis. The surface resistivity of this material (around 10^7 ohms/square) allows controlled dissipation of static charges from any surface in the cabinet, including shelves. Conductive grounding connections safely direct charges to a grounding terminal (standard on SDPVC cabinets; order separately for acrylic cabinets below).

Conductive Shelves, Shields and Trays

For smaller components that can be stored on shelves, Terra's grounded stainless steel shelving provide a 100% ESD-safe enclosure.

Grounded conductive plates (such as shelves) create a Faraday cage that prevents penetration of static charges. Because these conductive units are removable, they also protect your sensitive components from ESD as you transport them from one location to another.

Static-Dissipative Two Chambers PVC Adjust-A-Shelf Desiccator Cabinet

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.

Flowmeter, 1-10 SCFH, 2'' scale

Suitable for total pressures up to 100 psig and temperatures up to 150°F.

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.

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.

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.

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

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

Terra Universal Desiccator Cabinet Stainless Steel Door Frame

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.

stainless steel rack for adjustable shelf storage desiccator

Stainless Steel Racks for Adjustable Shelf Storage Desiccators

Unlike common chrome-plated hardware, durable stainless steel racks for adjustable shelf storage desiccators help maintain a contamination-free storage environment. They resist corrosion and chipping/scratching from the sliding removable shelves.

Popular Accessories

For a full list of accessories, select a product then click Choose Accessories on that product page.

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.
Humidity and Temperature Data Logger

Provides a convenient record of storage conditions inside a Desiccator chamber-adjustable logging interval (hours to months), USB port for easy data download in several formats.
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.
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)
Small Powder-Coated Steel Desiccator Stand, 4"H

Small 4"H powder-coated steel desiccator stand adjusts to fit cabinet snugly; optional casters simplify positioning and cleaning. Also available in stainless steel and 12" height.
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.

Terra Universal

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Terra Universal

Laboratory-Equipment