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
Thermo Scientific™ Dry-blend Buffered Packs
Our quality control ensures that every pack of dry-blend buffers yields consistent solutions without weighing or pH adjustment. Simply empty contents of one foil envelope pack into a beaker, add appropriate solvents, and stir to dissolve.
PBS Tablets, Phosphate Buffered Saline, Fisher BioReagents™
Phosphate Buffered Saline Tablets, CAS Number-7647-14-5, 7447-40-7, 100 tablets, Clear, Gray, White, 5/8 in., 600 SEC max., CAUTION!
Fisher BioReagents™ Phosphate Buffered Saline Tablet
Each tablet prepares 100mL of 1X PBS solution. Fisher Bioreagents™ Phosphate Buffered Saline tablets (PBS) are a convenient option for making 1X phosphate buffered saline.
Invitrogen™ Novex™ Tris-Glycine SDS Running Buffer (10X)
Formulated for separation of proteins, in their denatured state, on Novex Tris-Glycine gels
Thermo Scientific Chemicals TBE running buffer (10X)
Commonly used in nucleic acid electrophoresis. TBE Buffer is used for polyacrylamide and agarose gel electrophoresis. It is ideally suited for DNA and RNA separation on longer run, higher voltage or amperage gels. TBE is used with non-denaturing or denaturing (7 M urea) gels.
Thermo Scientific Chemicals Phosphate-buffered saline (PBS, 10X), pH 7.4
Non-toxic to most cells and is used in biological research.
Thermo Scientific Chemicals Krebs-Ringer Solution, HEPES-buffered
Standard physiological buffer that is suitable for various calcium imaging experiments. It is also used as a preserving agent.
Thermo Scientific Chemicals TRIS-buffered saline (TBS, 10X) pH 7.4
CAS: 77-86-1 Molecular Formula: C4H11NO3 Molecular Weight (g/mol): 121.136 MDL Number: MFCD00132476 InChI Key: LENZDBCJOHFCAS-UHFFFAOYSA-N PubChem CID: 6503 ChEBI: CHEBI:9754 IUPAC Name: 2-amino-2-(hydroxymethyl)propane-1,3-diol SMILES: C(C(CO)(CO)N)O
HEPES Buffer, 1M Solution, pH 7.3 (Molecular Biology), Fisher BioReagents™
Commonly used buffering agent
Thermo Scientific Chemicals TRIS-buffered saline (TBS, 20X) pH 7.4
CAS: 77-86-1 Molecular Formula: C4H11NO3 Molecular Weight (g/mol): 121.136 MDL Number: MFCD00132476 InChI Key: LENZDBCJOHFCAS-UHFFFAOYSA-N PubChem CID: 6503 ChEBI: CHEBI:9754 IUPAC Name: 2-amino-2-(hydroxymethyl)propane-1,3-diol SMILES: C(C(CO)(CO)N)O
Gibco™ Opti-Plex™ Complexation Buffer
Opti-Plex Complexation Buffer is a cGMP-manufactured, chemically defined, animal origin-free (AOF), methionine-free, biotin-free, low-protein transfection complexation buffer based on Opti-MEM I Reduced Serum Medium.