Life Science Buffers
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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
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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!
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PBS, Phosphate Buffered Saline, 10X Solution, Fisher BioReagents™
Commonly used buffer
Content And Storage | Room temperature |
---|---|
Form | Liquid |
Tris-HCl, 1M Solution, pH 8.0, Molecular Biology Grade, Ultrapure, Thermo Scientific Chemicals
CAS: 1185-53-1 Molecular Formula: C4H12ClNO3 Molecular Weight (g/mol): 157.594 InChI Key: QKNYBSVHEMOAJP-UHFFFAOYSA-N PubChem CID: 93573 IUPAC Name: 2-amino-2-(hydroxymethyl)propane-1,3-diol;hydrochloride SMILES: C(C(CO)(CO)N)O.Cl
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PubChem CID | 93573 |
---|---|
CAS | 1185-53-1 |
Molecular Weight (g/mol) | 157.594 |
SMILES | C(C(CO)(CO)N)O.Cl |
IUPAC Name | 2-amino-2-(hydroxymethyl)propane-1,3-diol;hydrochloride |
InChI Key | QKNYBSVHEMOAJP-UHFFFAOYSA-N |
Molecular Formula | C4H12ClNO3 |
Corning™ Phosphate Buffered Saline, 1X
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Used alone or in combination with other agents for washing tissues and cells.
PBS, 10X Solution, Molecular Biology Grade, Thermo Scientific Chemicals
For biological research. Thermo Scientific™ PBS, 10X Solution, Molecular Biology Grade is 0.2μm filtered and dispensed into durable, square nalgene bottles and upright carton.
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Form | Solution |
---|---|
Formulation | 80.6 mM sodium phosphate, 19.4 mM potassium phosphate, 27 mM KCl and 1.37 M NaCl in high purity dH2O |
pH | 7.4 |
HEPES Buffer, 1M Solution, pH 7.3 (Molecular Biology), Fisher BioReagents™
Commonly used buffering agent
Color | Undesignated |
---|---|
Physical Form | Liquid |
Chemical Name or Material | HEPES Buffer |
Grade | Molecular Biology |
Identification | Pass Test |
DNase | DNase free |
Merck Index | 15, 4689 |
Concentration | 0.95 to 1.05 M |
ChemAlert Storage Symbol | Gray |
Absorbance | ≤0.01(0.1M solution) at 260nm,0.004 max. (0.1M solution) at 280nm |
Name Note | 1M Solution, pH 7.3 |
CAS | 7732-18-5 |
Protease | Protease free |
pH | 7.2 to 7.5 |
Synonym | N-(2-Hydroxyethyl)piperazine-N«-2-ethanesulfonic Acid |
Purity Grade Notes | DNase-, RNase- and Protease-Free |
Recommended Storage | RT |
Molecular Formula | C8H18N2O4S |
Formula Weight | 238.197 |
Tris Hydrochloride, 1M Solution (pH 7.5/Mol. Biol.), Fisher BioReagents™
CAS: 77-86-1 Molecular Formula: C4H11NO3 Molecular Weight (g/mol): 121.136 InChI Key: LENZDBCJOHFCAS-UHFFFAOYSA-N Synonym: Tris-HCl PubChem CID: 6503 ChEBI: CHEBI:9754 IUPAC Name: 2-amino-2-(hydroxymethyl)propane-1,3-diol SMILES: C(C(CO)(CO)N)O
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PubChem CID | 6503 |
---|---|
CAS | 77-86-1 |
Molecular Weight (g/mol) | 121.136 |
ChEBI | CHEBI:9754 |
SMILES | C(C(CO)(CO)N)O |
Synonym | Tris-HCl |
IUPAC Name | 2-amino-2-(hydroxymethyl)propane-1,3-diol |
InChI Key | LENZDBCJOHFCAS-UHFFFAOYSA-N |
Molecular Formula | C4H11NO3 |
Corning™ Cell Culture Buffers: Dulbecco's Phosphate-Buffered Salt Solution 1X
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With low endotoxin content.
Dilution | 1 X |
---|---|
Product Type | DPBS |
Thermo Scientific Chemicals TRIS-buffered saline (TBS, 10X) pH 7.4, for Western blot
CAS: 77-86-1 Molecular Formula: C4H11NO3 Molecular Weight (g/mol): 121.136 MDL Number: MFCD00004679 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
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PubChem CID | 6503 |
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CAS | 77-86-1 |
Molecular Weight (g/mol) | 121.136 |
ChEBI | CHEBI:9754 |
MDL Number | MFCD00004679 |
SMILES | C(C(CO)(CO)N)O |
IUPAC Name | 2-amino-2-(hydroxymethyl)propane-1,3-diol |
InChI Key | LENZDBCJOHFCAS-UHFFFAOYSA-N |
Molecular Formula | C4H11NO3 |
Thermo Scientific Chemicals Phosphate-buffered saline (PBS, 10X), pH 7.4
Non-toxic to most cells and is used in biological research.
Dilution | 10 X |
---|---|
Form | Liquid |
Product Type | Phosphate Buffered Saline (PBS) |
Color | Colorless |
pH | 7.4 |
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.
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Solubility Information | Not miscible or difficult to mix in water. |
---|---|
Packaging | Plastic bottle |
Physical Form | Liquid |
Chemical Name or Material | Krebs-Ringer Solution |
TSCA | Yes |
Recommended Storage | Ambient temperatures |
Thermo Scientific Chemicals HEPES, 99%
CAS: 7365-45-9 Molecular Formula: C8H18N2O4S Molecular Weight (g/mol): 238.30 MDL Number: MFCD00006158 InChI Key: JKMHFZQWWAIEOD-UHFFFAOYSA-N Synonym: 4-(2-Hydroxyethyl)-1-piperazineethanesulfonic acid PubChem CID: 23831 ChEBI: CHEBI:42334 IUPAC Name: 2-[4-(2-hydroxyethyl)piperazin-1-yl]ethanesulfonic acid SMILES: OCCN1CCN(CCS(O)(=O)=O)CC1
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PubChem CID | 23831 |
---|---|
CAS | 7365-45-9 |
Molecular Weight (g/mol) | 238.30 |
ChEBI | CHEBI:42334 |
MDL Number | MFCD00006158 |
SMILES | OCCN1CCN(CCS(O)(=O)=O)CC1 |
Synonym | 4-(2-Hydroxyethyl)-1-piperazineethanesulfonic acid |
IUPAC Name | 2-[4-(2-hydroxyethyl)piperazin-1-yl]ethanesulfonic acid |
InChI Key | JKMHFZQWWAIEOD-UHFFFAOYSA-N |
Molecular Formula | C8H18N2O4S |
Tris Base (White Crystals or Crystalline Powder/Molecular Biology), Fisher BioReagents™
CAS: 77-86-1 Molecular Formula: C4H11NO3 Molecular Weight (g/mol): 121.136 InChI Key: LENZDBCJOHFCAS-UHFFFAOYSA-N Synonym: Trimethylol Aminomethane,Tris(hydroxymethyl)aminomethane,2-Amino-2-(hydroxymethyl)-1,3-propanediol,THAM,Tris base,Trometamol PubChem CID: 6503 ChEBI: CHEBI:9754 IUPAC Name: 2-amino-2-(hydroxymethyl)propane-1,3-diol SMILES: C(C(CO)(CO)N)O
PubChem CID | 6503 |
---|---|
CAS | 77-86-1 |
Molecular Weight (g/mol) | 121.136 |
ChEBI | CHEBI:9754 |
SMILES | C(C(CO)(CO)N)O |
Synonym | Trimethylol Aminomethane,Tris(hydroxymethyl)aminomethane,2-Amino-2-(hydroxymethyl)-1,3-propanediol,THAM,Tris base,Trometamol |
IUPAC Name | 2-amino-2-(hydroxymethyl)propane-1,3-diol |
InChI Key | LENZDBCJOHFCAS-UHFFFAOYSA-N |
Molecular Formula | C4H11NO3 |