Prepration Hood
|
31 of 72
Next 
Back 
Menu 
Index  |
 |
Any sample prepared using THF MUST BE PREPARED in the confines of an exhaust
hood. Note the ultrasonic bath in the right hand corner and the
intrinsically-safe hot plate in front of the bath. Samples are taken from the
bath and transferred to silver membrane filters via filtration using glass
chimney (funnel - note the assembled blue clamp and glass funnel), a filtration
base, and vacuum. The silver membrane filter is placed under the glass chimney
and separates the particulate from the THF. Note the Dewar in the left hand
corner containing liquid nitrogen and a cold trap for the vacuum system. This
allows any THF to be trapped in the cold trap and avoids any potential for
suction into the vacuum pump.
|
|
Back to Top 
www.osha.gov
