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ValuLine™ Desiccators
Value without Compromise!

Plastic ValuLine Desiccator  
Features Key

A Flowmeter
B Grounding terminal (SDPVC models)
C Chrome-plated hinges
D Expansion latch
E Material: choice of acrylic or static-dissipative pvc
F Shelves (reinforced plastic or stainless steel)
G Chrome-plated wire racks
H Reinforced doors
I Powder-coated stands
J Rear plenum wall for uniform gas distribution
Nitrogen Generator (not shown)
No. 3949-04

Valuline Hardware detail
Standard components: flowmeter, chrome-plated hinges, grounding terminal (included on static-dissipative PVC models)
RB Valve
Automatic RB (Relief/Bleed) Valve provides controlled nitrogen release
ten-chamber desiccator
No. 3949-07: 10-chamber acrylic ValuLine Desiccator
  • Low-cost system provides a controlled flow of nitrogen to prevent moisture-related degradation of stored materials
  • Rigid cabinet construction includes rear plenum chamber, for uniform gas distribution, and reinforced doors
  • Available in five chamber configurations, in clear acrylic or static-dissipative PVC, which eliminates static charges that attract and hold particles
  • Chrome-plated wire racks allow shelf adjustment to accommodate varying part sizes (order plastic or stainless steel shelves separately)
  • Parts standardization simplifies upgrades and replacements
  • Turnkey systems include flowmeter and Automatic RB® (Relief/Bleed) Valve — just connect to N2 source and you're ready for operation
  • Ideal for low-frequency access applications; select Terra's Adjust-A-Shelf™ Desiccator for rapid low-RH recovery in high-throughput environments
Designed for Clean, Durable Operation
Designed for purging with nitrogen to achieve low-humidity conditions, each model includes a perforated rear plenum wall that strengthens the cabinet and allows gas to enter all chambers uniformly.

Doors feature reinforcement ribs to ensure a better seal against closed-cell gasketing. The expansion latches eliminate internal scraping caused by rotary-style latches; the closing mechanism is positioned outside the chamber to keep stored materials clean.

Select among five standard sizes. Acrylic models provide strength and full visibility of stored parts but do not stand up to repeated wipe-down with strong cleaning agents (including alcohol). They also accumulate static surface charges that can lead to electro-static discharge.

Static-Dissipative PVC models eliminate these problems. Durable, molecularly embedded dissipative layers ensure safe removal of surface charges, protecting against both ESD and particle attractions. They also offer wide chemical resistance and are safe for use with alcohol.

All models below include a flowmeter, Automatic RB (Relief/Bleed) Valve, and chrome-plated wire racks. Select desired shelves and stand separately.

ValuLine Desiccator*
Specifications Clear Acrylic** Static-Dissipative PVC
No of
Nominal Dimensions
W" x D" x H" (mm)
Nominal Inside Dimensions
W" x D" (mm)
Cat. # Price Cat. # Price
6 35 x 18 x 36
(864 x 457 x 914)
14.25 x 14.5
(362 x 368)
3949-05A $ 1,982 ---  
* Order desired shelves and stands separately (see below).
** Acrylic is damaged by repeated contact with strong cleaning agents, including alcohol

Nitrogen generator Nitrogen Generators give you a reliable point-of-use supply of up to 99%-pure nitrogen. Eliminate the drawbacks of canisters and 3rd-party suppliers! You control volume, purity and rate; all you need is a clean compressed-air feed. Terra's three sizes of maintenance-free membrane generators meet several capacity requirements are ideal for back-filling or continuous flow into desiccators, glove boxes, vacuum chambers and incubators. 

Shelves and Tray
Acrylic shelves feature stainless steel front and back reinforcements to prevent bowing. Solid or perforated electropolished 304 stainless steel shelves are sealed in plastic before shipping to minimize contamination.

Order desired shelves separately:
SS-reinforced plastic (top), electropolished 304 SS perforated (center) or electropolished SS solid (bottom)

Trays can be used for storage within the desiccator, and are a convenient way to carry parts after they are removed.

Shelves and Trays
Material Cat. # Price
Reinforced Acrylic Shelf 1976-01 $ 50
Perforated EP 304 SS Shelf* 1976-02 $ 153
Solid 304 EP SS Shelf* 1976-05 $ 153
Solid 304 EP SS Tray* 1976-04 $ 153
* Shelves are individually polybagged and sealed after electropolishing to prevent surface contamination.

Powder-Coated Stand
Raise cabinets 4". Noncontaminating nylon leveling feet included. Select optional casters below. Recommended for cabinets with more than three chambers to allow floor positioning.

  Cat. # Price
Stand: for 17.12"W x 18"D models 1740-32 $ 412
Stand: for 35"W x 18"D models 1740-70 $ 656
Casters (set of 4) 1700-44 $ 295

File Type File Name Publication Date
Video ValuLine Desiccators by Terra
White Paper (PDF) On-Site Nitrogen Generation: Cheaper, Easier, More Reliable
Learn how on-site nitrogen generation saves money by not having to order canisters of inert gas for desiccators, glove boxes and analytical instruments. You can make your own purified nitrogen from compressed air using a sophisticated membrane module (find out how it works!).
Tech Resource (PDF) Why Desiccator Storage?
A technical overview to how desiccators extend shelf lives and increase product yields.
Tech Resource (PDF) Why Terra Desiccators?
Compare the many design and fabrication features that make Terra desiccators the most efficient and durable cabinets available.
Tech Resource (PDF) Why Use Nitrogen?
A guide to how nitrogen purging protects moisture-sensitive materials.
Tech Resource (PDF) Desiccator Installation and Cleaning
Recommended cleaning techniques and agents for various desiccator materials.
Manual (PDF) ValuLine Desiccators: Doc. #1788-07
ValuLine Desiccator Installation and Operating Guide, including installation instructions for the SmartDesiccator relative-humidity module.
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