Aldrich 3-Stage Oil Diffusion Pump

Chemfiles Volume 4 Article 3

Aldrich 3-stage oil diffusion pumps provide fast 375 L/s pumping speed that outperforms traditional glass diffusion pumps. They feature all glass construction with a removable jet assembly for easy cleaning. 3-stage oil diffusion pumps safely reduce sublimation and distill action temperature and are chemically resistant to acidic solvents. Sigma-Aldrich also offers all the necessary equipment to run and maintain your pump.

Model Overall dim. (in.) Pumping speed (L/s) Max. vacuum (torr) Catalog Number
With Gauge Port 32 x 12 375 10 Z544787
Without Gauge Port 32 x 12 375 10 Z555371

Equipment Required for Diffusion Pump Operation
Description
Dow Corning Diffusion Pump Oil (500 mL) Type 704*
445975
Type 705**
445983
Leybold Trivac B, D8B
Mechanical Vac. Pump, 197 Lpm speed
115 V
Z284599
220 V
Z282820
Glas-Col 500 mL Heating Mantle For heating mantle 115 V
Z284858
230 V
Z285145
Digitrol II Heat Controller 115 V
Z285498
240 V
Z285501
Corning 5x7” Stir Plate 115 V
Z262064
230 V
Z262072
Dewar flask, 10 L capacity Z105651  
Safety shield Z231401  
Vacuum Trap 1 L bulb capacity F9776  
*For Pressures 10-5 to 10-6 torr       **For Pressures 10-9 to 10-10 torr

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