... Cold trap temperature: -50 Freezing area : 0.12 m2 Laboratory refrigerator freezer Application: Vacuum freeze-drying technique, referred to as freeze ... table. 2. Appearance, ergonomic design, easy operation. 3. Imported closed compressor, high reliability, low noise. 4. Cold trap opening big, with ... of vacuum pumps, general drying device (sample set 4) Laboratory refrigerator freezer