Pierce™ Concentrated Buffer Stocks (10X and 20X)

Benefits of using Pierce Concentrated Buffer stock solutions include:
• Convenient—no weighing, no pH adjustment, no need to stock individual components
• Improved accuracy—ready-to-use formula, easily diluted without weighing chemical components
• Consistent quality—our quality control ensures that every prep will yield the same, consistent buffer

20X PBS Tween-20 can be used to prepare PBS-Tween (PBS-T) wash buffers for ELISA, western, and other immunoassays, as well as blocking buffer for plate-based assays. When diluted to 1X with water, 20X PBS Tween-20 makes 10 mM sodium phosphate, 0.15 M NaCl, 0.05% Tween™ 20 buffer at pH 7.5.

20X TBS Tween-20 (Tris-buffered saline with Tween™ 20 detergent) can be used to prepare TBS-Tween (TBS-T) wash buffers or blocking buffer diluent for applications such as ELISA, western blotting, and other immunoassays. When diluted 20-fold in water, a TBS Tween-20 buffer containing 25 mM Tris, 0.15 M NaCl, 0.05% Tween-20 at pH 7.5 is ready for use.

20X Tris-Buffered Saline (TBS) is a stock solution for preparing Tris-NaCl buffer for use as a wash buffer and antibody diluent for ELISA, western blotting, and other immunoassays. 20X Tris Buffered Saline (TBS) makes 25 mM Tris, 0.15 M NaCl with pH 7.2 to 7.5 when diluted to 1X with water.

20X Phosphate-Buffered Saline (PBS) is ideal for preparing PBS buffers for use in crosslinking, biotinylation, and fluorescent labeling reactions requiring an amine-free buffer. When diluted 20-fold in water, the solution yields 10 mM sodium phosphate, 0.15 M NaCl at pH 7.5.

10X Tris-Glycine-SDS Buffer makes 0.025 M Tris, 0.192M glycine, 0.1% sodium dodecyl sulfate (SDS) at pH 8.5 when diluted to 1X with water.

20X Borate Buffer is ideal for preparing sodium borate buffer solutions for use in protein modification procedures requiring amine-free buffer at an alkaline pH. 20X Borate Buffer makes 50 mM borate at pH 8.8 when diluted to 1X with water.

20X Modified Dulbecco's PBS is used for preparing physiological Na- and K-phosphate buffered saline (D-PBS) used for wash buffers and antibody diluents in immunoassays like ELISA and western blot. 20X Modified Dulbecco's PBS makes 8 mM sodium phosphate, 2 mM potassium phosphate, 0.14 M NaCl, 10 mM KCl, pH 7.4 when diluted to 1X with water.

10X Tris-Glycine Buffer is a space-saving stock solution that is ideal for quickly preparing standard Tris-glycine (pH 8.5) transfer buffer used for western blotting using Tris-glycine gel electrophoresis. When diluted 10-fold in water or 20% methanol, the solution yields 0.025 M Tris, 0.192 M glycine at pH 8.5.

10X TBE Buffer stock solution is ideal for casting and preparing Tris-borate-EDTA (TBE) running buffer used for agarose and polyacrylamide gel electrophoresis of nucleic acids. When diluted to 1X, the TBE Buffer contains 0.089 M Tris, 0.089 M borate, 2 mM EDTA with pH 8.2 to 8.4.

20X Modified Dulbecco's PBS Tween-20 will make physiological sodium- and potassium-phosphate buffered saline (D-PBS) to be used as a wash buffer for ELISA, western, and other immunoassays or as diluent or blocking buffer for plate-based assays. 20X Modified Dulbecco's PBS Tween-20 (D-PBS-T) makes 8 mM sodium phosphate, 2 mM potassium phosphate, 0.14 M NaCl, 10 mM KCl, 0.05% Tween™ 20 at pH 7.4 when diluted to 1X with water.

20X TAE Buffer is a space-saving stock solution that is ideal for casting and preparing Tris-acetate EDTA (TAE) running buffer for agarose gel electrophoresis of nucleic acids. When diluted to 1X with water, a 0.04 M Tris, 0.04 M acetate, 1 mM EDTA buffer at pH 8.2 to 8.4 is ready for use.