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Cells—Diffusion and Osmosis Supplies
Dialysis Tubing
Regenerated, seamless cellulose membrane tubing for dialysis demonstrations.
Normal molecular weight cut-off is 12,000 to 16,000, and pore size is approximately
25 Angstroms. Tubing can be boiled or autoclaved and has a pH stability range of 5
to 9. Choose from three widths, each in three lengths.
Catalog No. Description Flat Width Open Diameter Length Price/Each
AP4351 Dialysis Tubing 25 mm
(1")
16 mm
(5/8")
3 m (10') $ 9.14
AB1229 15 m (50') 34.72
AB1230 30 m (100') 66.00
AP4352 33 mm
(11/3")
22 mm
(7/8")
3 m (10') 8.37
AB1231 15 m (50') 31.50
AB1232 30 m (100') 63.20
AP4353 45 mm
(13/4")
29 mm
(11/8")
3 m (10') 9.63
AB1233 15 m (50') 38.81
AB1234 30 m (100') 69.28
Dialysis Tubing Clamp
One-piece polypropylene clamp eliminates tying knots in dialysis tubing. Unique,
reusable clamp locks over ends of tubing to form a bag ensuring a leakproof seal.
Fits tubing with flat width up to 45 mm.
Catalog No. Description Price/Each
AP4349 Dialysis Tubing Clamp $2.75
Disposable Dialysis Tubing Clamps
Finally, an inexpensive dialysis tubing clamp that works! Just twist the end of the wet
dialysis tubing a few times, place the clamp over the twisted area, and squeeze the
vise-like clamp together. It will not pull off nor will any molecules diffuse through the
clamped area. Dispose of the clamps along with the used dialysis tubing. Package
of 100 clamps.
Catalog No. Description Price/Pkg.
FB1232 Disposable Dialysis Tubing Clamps $15.80
Dialysis Tubing Clamp
AP4349
BIOLOGY CELLS
Disposable Dialysis
Tubing Clamps
FB1232
Prepare Dialysis Tubing for Use
• Dialysis tubing is a semipermeable mem brane
through which small molecules can easily pass, but
large ones cannot.
• In most cases, the tubing simply needs to be washed
with distilled or deionized water and soaked for 5 to
10 minutes prior to use.
• Once wet, the tubing should not be allowed to dry
because the integrity of the material would be
compromised.
• A simple means of removing trace metal contaminants
from the dialysis tubing (if it is suspected that they
may alter experimental results) is to immerse the
tubing in a beaker of distilled or deionized water, add
a pinch of EDTA (ethylenediamine tetraacetic acid,
disodium salt) and heat gently to just below boiling.
Rinse the cooled tubing with distilled or deionized
water prior to use.
• Dry tubing may be stored in the polyethylene bag
indefinitely if tightly closed and protected from moisture.
Once wet, the tubing must be stored in distilled
or deionized water to which is added 1% sodium
benzoate (1 gm per 100 mL water) as a preservative.
Again, rinse just prior to use. If possible, refrigerate
wet-stored tubing.
• To prevent contamination, wear gloves when handling
dialysis tubing.
Dialysis
Bag Holder
Distilled Water
Dialysis Tubing
with Sample
Dialysis Tubing
Clamp or Knot
Dialysis Bag Holder
Strong plastic clip designed to fasten over the rim of a large beaker to easily suspend
dialysis tubing bag. Holder may be marked for sequencing. Six per package.
Catalog No. Description Price/Pkg.
AP4348 Dialysis Bag Holder, Pkg. of 6 $27.95
Dialysis
Bag Holder
AP4348
CELLS—DIFFUSION AND OSMOSIS SUPPLIES continued on next page.
Dialysis Tubing
AP4351, etc.
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