Life Science Buffers
Balanced salt solutions and powders used for molecular, protein, nucleic acid, and cell biology applications including cell culture, electrophoresis, ELISA, and chromatography processes; available in a variety of formulations and grades.
Buffer solutions serve to keep pH (acidity or alkalinity) nearly constant in a variety of chemical and biological applications. For example, a bicarbonate buffer helps maintain the pH of blood, a buffered saline maintains cellular contents at a consistent pH level, and buffers help maintain a narrow pH range for enzymes to function correctly.
Most biological samples used in research are kept at a pH of about 7.4. Common biological buffers used for tissue culture include Dulbeccos phosphate buffered saline (PBS), Tris base, HEPES, MOPS, PIPES, and other formulations developed for specific cell lines or applications. Most buffers used in cell culture are also DNase-, RNase-, and protease-free.
The choice of buffer for a particular biological reaction or site depends on several factors:
- Temperature
- Desired or target pH
- Buffer toxicity (to the system)
- Buffer interactions with other system components
Sigma Aldrich Fine Chemicals Biosciences Phosphate buffered saline powder, pH 7.4, for preparing 1 L solutions | MFCD00131855 | 1PAK
Phosphate buffered saline powder, pH 7.4, for preparing 1 L solutions | MFCD00131855 | 1PAK
Sigma Aldrich Fine Chemicals Biosciences Tricine BioPerformance Certified, suitable for cell culture, >=99% (titration) | 5704-04-1 | MFCD00004277 | 25G
Tricine BioPerformance Certified, suitable for cell culture, >=99% (titration) | Purity: >=99% (titration) | Mol Wt: 179.17 | 5704-04-1 | MFCD00004277 | 25G
Biotang Inc Dialysis tubing Storage buffer in PBS and Glycerol (autoclaved),; 125 ml
Dialysis tubing Storage buffer in PBS and Glycerol (autoclaved),; 125 ml.
Biocare Medical, LLC Tris Buffer Saline (TBS) Plus, 10X
For laboratory use and procedures requiring a high quality Tris buffer saline. TBS is sodium azide and thimerosal free and provides superior pH stability. It can also be used for manual immunohistochemistry applications or on an automated staining system with the addition of surfactant.
Medchemexpress LLC Mes (2-morpholinoethanesulphonic acid) | 4432-31-9 | 99.85% | 1 ML
MES (2-Morpholinoethanesulphonic acid) is an amphoteric ion buffer designed for various biochemistry and molecular biology applications. It functions effectively within a pH range of 5.5-7.0 and is widely recognized as a Good's buffer, suitable for experiments including cell culture, enzyme activity determination, electrophoresis, and protein studies.
- Amphoteric ion buffer
- Buffer capacity from pH 5.5-7.0
- Ideal for cell culture, enzyme activity determination, electrophoresis, and protein studies
- Solid, white to off-white appearance
- Soluble in water and DMSO
Medchemexpress LLC Heppso | 68399-78-0 | 99.89% | 100 G
HEPPSO is a zwitterionic buffer with a working pH range of 7.1-8.5. It exhibits a relatively high ability to bind copper(II) and possesses a pKa of 7.84 at a 2.0 mM buffer concentration. It is intended for research use only and is not sold to patients.
- Working pH range of 7.1-8.5.
- Exhibits a relatively high ability to bind copper(II).
- Possesses a pKa of 7.84 at a 2.0 mM buffer concentration.
- For research use only.
- Molecular weight: 268.33.
- Formula: C9H20N2O5S.
- Appearance: Solid.
- Color: White to off-white.
Sigma Aldrich Fine Chemicals Biosciences HEPES potassium salt | 82207-62-3 | MFCD00043438 | 25 g
HEPES potassium salt | Purity: ≥99.5% | Mol Wt: 276.39 | 82207-62-3 | MFCD00043438 | 25 g
Sigma Aldrich Fine Chemicals Biosciences TrizmaR base Primary Stand25KG
Tris is an established basimetric standard and buffer used in biochemistry and molecular biology. It may be used by itself as a buffer or as a component of mixed buffer formulations such as Tris-EDTA (TE) buffer Tris-acetate-EDTA (TAE) buffer Tris-borate-EDTA (TBE) buffer etc. It is pure essentially stable relatively non-hygroscopic and has a high equivalent weight.
Biotang Inc Lysis Buffer(His-tag protein purification from E.Coli and insect cells), 500 ml
Lysis Buffer(His-tag protein purification from E.Coli and insect cells), 500 ml.
Zymo Research Corporation Endo-Wash Buffer, 120 ml
Endo-Wash Buffer (120 ml). For use in Zyppy™ Plasmid Purification Kits. Sold individually or as a part of the Zyppy™ plasmid purification product line from Zymo Research.
Sigma Aldrich Fine Chemicals Biosciences PIPES | 5625-37-6 | MFCD00006159 | 500g
PIPES | Purity: 99% | Mol Wt: 302.37 | 5625-37-6 | MFCD00006159 | 500g
Apexbio Technology LLC PBS Liposomes(Synonyms: Phosphate Buffered Saline Liposomes, Empty Liposomes, Blank Liposomes), 5mL.
PBS Liposomes consist of phosphate-buffered saline (PBS) encapsulated within lipid bilayers serving primarily as control reagents in macrophage depletion studies involving clodronate liposomes Unlike clodronate-loaded liposomes PBS liposomes lack active agents targeting macrophages and thus do not induce macrophage apoptosis They function to discriminate between the biological effects mediated by liposomal delivery systems versus those specifically attributable to encapsulated clodronate PBS Liposomes are commonly employed in comparative experimental designs to assess specific macrophage depletion outcomes