So-Low Laboratory Freezers are high performance and heavy-duty. Over 40 years of experience in freezer design has produced a refrigeration system that ensures long life for your freezer. Laboratory professionals all over the world have recognized the dependability and efficiency of So-Low Freezers, the first to combine all of these performance features and deliver a level of quality construction, reliability and value unequaled anywhere in the world. Performance testing is your assurance of So-Low Lab Freezers' dependability. Every freezer is fully tested under the most demanding conditions for seven days. The constant ultra-low setpoint operating temperature is assured in warm temperature environments.