Sigma-Aldrich D9777 Dialysis tubing cellulose membrane avg. flat width 25 mm (1.0 in.) 100 FT
Marka
Stok Kodu
LB.SA.D9777-100FT
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Sigma-Aldrich D9777 Dialysis tubing cellulose membrane avg. flat width 25 mm (1.0 in.) |
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NACRES: NB.22 |
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PROPERTIES
avg. diam. 16 mm, when full
avg. flat width 25 mm (1.0 in.)
capacity ~60 mL/ft
DESCRIPTION
General description
Typical molecular weight cut-off = 14,000.
Packaging
Supplied in rolls, dry
Quality
May contain glycerin and sulfur compounds in more than trace amounts.
Preparation Note
Removal of glycerol included as a humectant can be accomplished by washing the tubing in running water for 3-4 hours. Removal of sulfur compounds can be accomplished by treating the tubing with a 0.3% (w/v) solution of sodium sulfide at 80°C for 1 minute. Wash with hot water (60°C) for 2 minutes, followed by acidification with a 0.2% (v/v) solution of sulfuric acid, then rinse with hot water to remove the acid. This tubing will retain most proteins of molecular weight 12,000 or greater. |
