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Vacuum Desiccators
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Straight Drying Tubes
This is the traditional type of drying tube. The stem is put through the hole of a perforated cork or stopper. The drying tube is filled with a desiccant, usually lumps of either calcium chloride or Drierite. Unless the chunks are very big, the desiccant is held in place (both ends) with a couple of loose wads of glass wool or Kaowool. The straight drying tube is good for reactions requiring a pressure vent to the outside without letting moisture into the system. CO2 can also be absorbed by using soda-lime pellets; just remember that it still lets O2 in.
For glass-jointed apparati, the drying tube stem can sometimes be fitted through a thermometer adapter or well, depending on the size of the adapter hole.
For a gas generation setup, the top of the drying tube is fitted with a 1-hole stopper and glass tube of its own. Water vapor is removed from the gas on its way through the desiccant-filled tube.
Straight drying tubes are sometimes used as micro-fractionating columns, in which case they're filled with glass tubing sections or glass spheres.
100 mm Drying Tube, Straight, with single Bulb
Stem O.D.: 5.9 to 6.0 mm
Bulb O.D.: 26.8 mm
Body O.D.: 14.5 mm
Body Length (incl. Bulb): about 96 mm
Overall Length: about 130 mm
#C4011 .... $3.89 each
Drying tube only; as shown in photograph
150 mm Drying Tube, Straight, with single Bulb
Drying tube only; accessories not incl.
Stem O.D.:
Bulb O.D.:
Body O.D.:
Body Length (incl. Bulb):
#C4012....$3.99
each
Drying tube only; as shown in photograph
Drying tube only; as shown in photograph
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We also accept
Paypal
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