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                                                                                                                                                                                                Apparatus and Supplies
Funnels, Chromatography
CP Lab Safety® Chromatography Funnels
CP Lab Safety’s plastic Chromatography Funnels are virtually unbreak­ able and made of chemically resistant high density polyethylene (HDPE). These uniquely designed funnels have perforated sides and a closed stem, which facilitates the gentle addition of solvent without disturbing the silica gel by allowing solvent to flow down the column wall, making these superior to ordinary funnels. Made with HDPE, these funnels are spark proof, rust proof, dent proof and boil proof. Specifications: 68 mm OD, 9 x 20 mm stem, 65 mm Height.
Funnels, Powder
Powder Funnel, Polypropylene
Funnels, Pressure Equalizing
Synthware® Pressure Equalizing Funnels
High­quality glassware for use in the teaching or research lab.
Separatory Funnel, Polypropylene
This Squibb separatory funnel is pear shaped and molded of polypropyl­ ene with a screw top and a PTFE stopcock. The molded polypropylene will provide sufficient visibility of the liquid interface.
1-800-452-1261
flinnsci.com
98
                    Catalog No.
  Description
  Capacity (mL)
   Price/Each
   AP9430
CP Lab Safety® Chromatography Funnels
   60 mL
 $20.00
 AP9431
 120 mL
  20.00
 AP9432
 240 mL
  20.00
 AP9433
  960 mL
   20.60
   AP9434
   960 mL; Wide Neck
  20.60
 CP Lab Safety® Chromatography Funnels AP9430, etc.
Powder Funnel, Polypropylene AP2268, etc.
   Catalog No.
  Top Inside Diameter (mm)
  Stem Outside Diameter (mm)
 Stem Length (mm)
 Price/Each
 AP2268
  66
  11
 26
 $3.75
 AP2270
  84
  25
 27
 5.30
 AP2269
  98
  26
 27
 5.75
 AP2271
   154
   25
  30
  7.00
   Synthware® Pressure Equalizing Funnels GP9316
  Catalog No.
  Description
  Joint Size
  Capacity (mL)
  Price/Each
   GP9316
Synthware® Pressure Equalizing Funnels
   19/22
125
  $163.00
 GP9317
 24/40
 125
 172.20
 GP9318
  24/40
  250
  197.00
  Catalog No.
  Description
  Capacity (mL)
   Price/Each
   AP1290
Separatory Funnel, Polypropylene
   100
 $25.60
 AP1291
 250
  29.00
 AP7695
  500
   96.15
 Separatory Funnel, Polypropylene AP1290, etc.
    Use a Separatory Funnel to Separate Immiscible Liquids
1. Use a separatory funnel that will hold at least twice the total volume of solution to be extracted and the extraction solvent.
2. Support the funnel in a ring stand and pour the solution to be extracted into the funnel.
3. Next, pour the extraction solvent into the funnel.
4. Stopper the funnel and hold the stopper in place.
5. Invert and gently swirl the funnel. Do not shake the funnel or an undesirable emulsion may form.
6. While the funnel is inverted, open the stopcock to release the built up pressure.
7. Close the stopcock and repeat steps 5 and 6 several times.
8. Place the funnel back in the ring support and allow the two layers to separate.
9. Remove the stopper and open the stopcock to drain off the bottom layer.
Top should be open when draining
Ring with pieces of rubber tubing to cushion funnel
Layer of lower density
Layer of greater density
Proper technique
of holding, swirling and venting a separatory funnel.
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