BTL-433 with optional window
Adding to our popular Criterion benchtop series, ESPEC introduces the BTL-433 humidity chamber with the same quality features and expanded capabilities.
The four cubic foot workspace is the largest to be found in a benchtop unit, while requiring less footprint than even smaller comparable chambers. The extended temperature and humidity ranges make testing at more extreme conditions possible.
The vertical configuration saves bench space, plus the refrigeration’s ventilation design allows installation against a wall for even more space savings.

Controlling humidity in a small environmental chamber can be especially challenging. ESPEC expertise in humidity control brings intelligent design that is carefully integrated into the BTL-433. The humidity subsystems are designed for reliability, convenience, and performance:
Compare Benchtop Models Side-by-side comparison of up to three models.

| Model / Link | Interior Dimensions (W x D x H) |
Interior Volume | Temperature Range | Humidity Control | Notes | |
|---|---|---|---|---|---|---|
| BTL-433 | 19.6" x 15" x 23.6" | 4 cu. ft. | -20 to 180°C | Yes | ||
| Click model number for details, including metric & english units. | ||||||