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Microprocessor controls maintain temperature and humidity in approximate ranges of 40°C-70°C and 40%-95%, respectively. 

A low-pressure water vapor generator controls chamber humidification by injecting saturated water vapor into the recirculating airduct. This process is preferable to steam generation because steam introduces additional heat to the chamber atmosphere, which compromises temperature control. Uniform temperature and humidity are maintained using the same horizontal air flow technology employed in the SHEL LAB oven family.


SHEL LAB Humidity Test Cabinets  provide a controlled environmental chamber for a wide range of industrial and  biotechnical testing applications.

All chambers include:


  • Microprocessor Control
  • Seamless Corrosion-Resistant Stainless Steel Interior
  • High Limit Back-Up Controller


Please note this unit needs to be  plumbed with distilled water or filtered tap water. Water resistance must be in the range of 50K-1M Ohm/cm or conductivity range of 20.0-1.0 uS/cm. If your laboratory cannot support this water quality, purchase the SHEL LAB Water Purification Kit. See the installation and operation manual for more information.



Part ID


Exterior Dimensions (W × D × H)

42.5 × 37 × 85
(1080 mm × 940 mm × 2159 mm)

Interior Dimensions (W × D × H)

30.2 × 26 × 62
(767 mm × 660 mm × 1575 mm)


28.2 cu.ft. (799 L)

Shelf Dimensions (W × D)

30.3 × 26.2 (768 mm × 665 mm)

Unit Weight

593 lbs (268 kg)

Interior Metal

430 SST

Exterior Metal

Painted Cold Roll Steel

Operating Temperature Range

Amb +15C - 70C

Controller Type


Display Resolution

0.1 °C

Power Voltage , Frequency and Current

110-120 VAC, 50/60 Hz, 14.5 Amps

Max HVAC Load

3890 BTUs/hr

SHC28 110/120V Manual

SHC28 220/240V Manual

SHC28 Brochure

Locate a Sales Rep Get a Quotation
Shel Lab Bactron Lab Armor Cascade TEK Visu HighPoint
Sheldon Manufacturing Inc

300 N. 26th Avenue • PO Box 627
Cornelius, OR 97113 USA
1 (888) 227-1410 •

ISO Certified