Freeze Drying Vacuum Solutions

Lyophilization is a demanding vacuum application that requires a deeper vacuum than can be achieved with diaphragm technology alone. It is usually best-served by VACUUBRAND’s innovative RC6 Chemistry-HYBRID pump.

How much vacuum do I need?
Lyophilization applications typically require vacuum levels as deep as 10^-3 mbar. Traditionally, this requirement has been provided by oil-sealed rotary vane pumps, protected by a dry ice or liquid nitrogen cold trap. To help users combat the high costs and contamination of rotary vane pumps, VACUUBRAND^® developed the new RC6 Chemistry-HYBRID pump. The RC6 combines a rotary vane pump for vacuum capacity with a chemistry-design diaphragm pump backing pump. By reducing the outlet pressure on the rotary vane section, it substantially reduces condensation of solvent into the pump oil, as well as continuously distills those solvents from the pump oil. This design reduces oil changes and maintenance costs by up to 90 percent**. The RC6 is suitable for freeze dryers with condensers up to six liters. It is available as a pump, or integrated with an outlet condenser as the PC8/RC6.

What about larger applications?
Freeze dryers with condensers larger than six liters will require an oil-sealed rotary vane pump. VACUUBRAND offers a full line of rotary vane pumps with the power to easily meet the demands of larger applications and the innovative design and quality assurance of VACUUBRAND pumps.

For applications larger than twelve liters, contact BrandTech Scientific.

Rotary Vane options?
BrandTech Scientific recommends that you should “Never use an oil pump when an oil-free pump will do the job.” Sometimes, however, certain applications require deeper vacuum levels than oil-free pumps can provide.

When these situations arise, consider the RC6 Chemistry-HYBRID pump or a VACUUBRAND^® rotary vane vacuum pump such as the RZ2.5, RZ6, or RZ9. These pumps feature the same high performance, innovative design, and quality assurance as VACUUBRAND’s oil-free vacuum pumps and systems.