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
Electron Microscopy Sciences Hank's Balanced Salts Formula I 500 ML
All of our Hanks' Balanced Salt Solutions contain: Potassium Chloride, Potassium Phosphate Monobasic, Sodium Chloride, Sodium Phosphate Dibasic, and D-Glucose. Some formulations may contain additional components. Use the table below as a quick reference for identifying the one that best suits your application. All solutions are prepared in 1X strength.
Electron Microscopy Sciences D-PBS, Formula II Phosphate Buffer Saline 1 LT
All of our Dullbecco's Phosphate Buffer Saline Solutions contain Potassium Chloride, Potassium Phosphate Monobasic, Sodium Chloride, Sodium Phosphate Dibasic, and D-Glucose. Some formulations may contain additional components. Solutions are prepared 1X strength.
Sigma Aldrich Fine Chemicals Biosciences Phosphate Buffer Solution | 14265-44-2 | MFCD00145108 | 1 gal
Phosphate Buffer Solution | Mol Wt: 94.97 | 14265-44-2 | MFCD00145108 | 1 gal
Sigma Aldrich Fine Chemicals Biosciences BES 99.0 titration100G
BES (N N-bis(2-hydroxyethyl)-2-aminoethanesulfonic acid) is a useful secondary standard biochemical buffer. Useful pH range for BES is 6.4 to 7.8. It is useful for diagnostic assay manufacturing industry. BES a sulfonic acid-containing cross-linking agent induces cross-linking between sulfonated polyimide chains in sulfonated polyimide membranes.
Sigma Aldrich Fine Chemicals Biosciences Dulbeccos Modified Eagles1L
This DMEM-Hi glucose medium is a 1x complete medium with sodium pyruvate added. It also differs from the original DMEM-Hi formulation wherein pyridoxine is substituted for pyridoxal. Pyridoxal is an unstable component of media.
Teknova 1X PBS with 0.1% Tween 20, 1% BSA. 1000mL, Sterile.
Phosphate-buffered saline (PBS) is a salt solution that is commonly used in physiological and biochemical experiments. It can be used to maintain pH neutrality or to buffer against changes in pH in order to provide optimal conditions for cellular growth and function. The buffering range is between pH 6.8 and 7.4.
Sigma Aldrich Fine Chemicals Biosciences PIPES BioPerformance Certi500G
PIPES BioPerformance Certi500G
Sigma Aldrich Fine Chemicals Biosciences BICINE BioXtra 99 titratio250G
BICINE BioXtra 99 titratio250G
Sigma Aldrich Fine Chemicals Biosciences Dulbeccos Modified Eagles1L
DULBECCOS Dulbeccos Modified Eagles1L
Teknova 10X DPBS with 0.5% Tween 20, pH 7.4. 1000mL, Non-Sterile.
Phosphate-buffered saline (PBS) is a salt solution that is commonly used in physiological and biochemical experiments. It can be used to maintain pH neutrality or to buffer against changes in pH in order to provide optimal conditions for cellular growth and function. The buffering range is between pH 6.8 and 7.4.
Sigma Aldrich Fine Chemicals Biosciences HEPES BioXtra suitable for500G
HEPES has been described as one of the best all-purpose buffers available for biological research. At biological pH the molecule is zwitterionic and is effective as a buffer at pH 6.8 to 8.2 (pKa 7.55). HEPES has been used in a wide variety of applications including tissue culture. It is commonly used to buffer cell culture media in air. HEPES finds its usage in in vitro experiments on Mg. It is typically used in cell culture at concentration between 5mM to 30mM.