Terra Part # 3950-43D
$1,659
Usually ships in 18-24 business days

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Designed in the USA

• 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

• 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

• Heavy-duty lift latches are most durable, ergonomic (no twist) door fastening available

• Cabinet includes:

• SS shelf racks in each chamber

• One perforated SS shelf per cabinet (select additional shelves at checkout)

• Flowmeter for manual control (upgrade to automatic DualPurge™ controller at checkout)

• One release-bleed valve per chamber

• Chrome-plated, non-locking LiftLatches™ (SS and locking latches available at checkout)

• Cabinet has doors one one side; two-sided models are available

Order replacements door(s) to ensure uninterrupted services should a door be damaged in operation

For more precise RH control with lower gas usage, consider NitroPlex-ready desiccators that control each chamber separately and automatically with per-chamber digital RH indicator (see "Similar Products")

• A full range of accessories is available at checkout.

Chamber Dimensions: 16.625" W x 16.125" D x 11.625" H

Opening Dimensions: 16.375" W x 10.75" H

Number of Chambers: 3 Chambers

Marks & Listings: CE, UL, ULC

Weight, Product: 50 lb

Weight, Shipping: 128 lb

Dimensions, Product: 18" W x 18" D x 36" H

Dimensions, Shipping: 23.5" W x 42" D x 26.5" H

Package Type: Crate

Unit of Measure: EA

Learn More About Adjust-A-Shelf Desiccators

  • Adjust-A-Shelf Desiccators
  • Desiccator Humidity Control
  • Leveling your Desiccator

Features and Benefits

ESD Protection

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 PVC Avoids Surface Charges

Grounded, static-dissipative desiccator cabinets safely discharge surface charges to ground, eliminating the risk of electrostatic discharge and attractive forces that seize particles.

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.

Jumbo Display Hygro-Thermometer

Digital temperature/humidity gauge is ideal for monitoring temperature and humidity.

Data Logger; Relative Humidity/Temperature

Microwaveable Kleer-Vue Sorbent Box

An alternative to nitrogen purging, these desiccant units contain indicating silica gel that turns from blue to pink as moisture is absorbed.

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)

Ergonomic LiftLatches

Lifting latch mechanism minimizes stress on wrists and desiccator hinges; non-rotary motion generates no particles inside the storage area (optional locking model shown)

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

Rear Plenum Chamber For Uniform Gas Distribution

Rear perforated plenum provides uniform gas distribution to all chambes in the cabinet

Two-Chamber Adjust-A-Shelf Desiccator Cabinet

Available in three chamber sizes, these desiccators include a flowmeter and bleed valve for dry gas purging, reinforced doors with non-adhesive gaskets, stainless steel wire racks and shelf, perforated plenum chamber for uniform gas distribution.

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 & 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
    Terra’s Dual Purge and NitroWatch relative humidity controllers maintain a low-RH set-point inside a desiccator or glove box; they provide variable purge control that ensures continuous positive pressure and eliminates nitrogen waste.
  • 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 Ionizing Module
    Ionizing modules are available for desiccators, 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.

On a tight schedule? Choose FasTrak 24/7 Priority Service to help meet your critical schedule for Terra-manufactured products, either before or after your order is placed.*

  • FasTrak 24/7 provides a 24/7 commitment to meet the shipping date YOU specify, regardless of quoted lead times.
  • FasTrak 24/7 assigns a dedicated production team plus a dedicated senior expeditor working three shifts to meet your delivery specification.
  • FasTrak 24/7 guarantees* to meet the agreed-to specified ship date.

Call for pricing. FasTrak service fees cover costs of additional services only, without additional profit.

 * 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.

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