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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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Keyword Search:
1 – 15 of 453 results
1
Promotions Available

HEPES (Fine White Crystals/Molecular Biology), Fisher BioReagents™

Commonly used buffering agent | CAS: 7365-45-9 | C8H18N2O4S | 238.30 g/mol

Molecular Weight (g/mol) 238.30
ChEBI CHEBI:42334
Color White
Chemical Name or Material HEPES
Grade Molecular Biology
SMILES OCCN1CCN(CCS(O)(=O)=O)CC1
Identification Pass Test
DNase DNase free
Merck Index 15, 4689
InChI Key JKMHFZQWWAIEOD-UHFFFAOYSA-N
ChemAlert Storage Symbol Gray
Assay Percent Range ≥99 %
PubChem CID 23831
Absorbance 0.01 max. (0.1M solution) at 280nm
Percent Purity ≥99%
CAS 7365-45-9
Protease Protease free
Health Hazard 3 Emergency Overview
Causes eye, skin, and respiratory tract irritation. Use personal protective equipment. Ensure adequate ventilation. Wash off immediately with plenty of water for at least 15 minutes. Obtain medical attention. Rinse immediately with plenty of water, also under the eyelids, for at least 15 minutes. Obtain medical attention. Move to fresh air. If breathing is difficult, give oxygen. Obtain medical attention. Do not induce vomiting. Obtain medical attention. Obtain medical attention. .

NFPA

Health:2
Flammability:1
Instability:1
MDL Number MFCD00006158
Health Hazard 2 WARNING!
Solubility Information Soluble in water
pH 5.0 to 6.5
Purity Grade Notes DNase-, RNase- and Protease-Free
Recommended Storage RT
Molecular Formula C8H18N2O4S
3
Promotions Available

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
4
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Tris(hydroxymethyl)aminomethane (Cryst./Certified ACS), Fisher Chemical™

CAS: 77-86-1 Molecular Formula: C4H11NO3 Molecular Weight (g/mol): 121.136 MDL Number: MFCD00004679 InChI Key: LENZDBCJOHFCAS-UHFFFAOYSA-N Synonym: 2-Amino-2-(hydroxymethyl)-1, 3-propanediol,Trimethylol Aminomethane,Tris Buffer,Tris,Trizma™,THAM,Tris base,Tris(hydroxymethyl)aminomethane,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
MDL Number MFCD00004679
SMILES C(C(CO)(CO)N)O
Synonym 2-Amino-2-(hydroxymethyl)-1, 3-propanediol,Trimethylol Aminomethane,Tris Buffer,Tris,Trizma™,THAM,Tris base,Tris(hydroxymethyl)aminomethane,Trometamol
IUPAC Name 2-amino-2-(hydroxymethyl)propane-1,3-diol
InChI Key LENZDBCJOHFCAS-UHFFFAOYSA-N
Molecular Formula C4H11NO3
5
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Tris (Tromethamine) (Granular/USP), Fisher Chemical™

CAS: 77-86-1 Molecular Formula: C4H11NO3 Molecular Weight (g/mol): 121.136 MDL Number: MFCD00004679 InChI Key: LENZDBCJOHFCAS-UHFFFAOYSA-N Synonym: Trishydroxymethylaminomethane,Tris Buffer,Tris,THAM,Trizma™,2-Amino-2-(hydroxymethyl)-1,3-propanediol,Tris base,Tris(hydroxymethyl)aminomethane,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
MDL Number MFCD00004679
SMILES C(C(CO)(CO)N)O
Synonym Trishydroxymethylaminomethane,Tris Buffer,Tris,THAM,Trizma™,2-Amino-2-(hydroxymethyl)-1,3-propanediol,Tris base,Tris(hydroxymethyl)aminomethane,Trometamol
IUPAC Name 2-amino-2-(hydroxymethyl)propane-1,3-diol
InChI Key LENZDBCJOHFCAS-UHFFFAOYSA-N
Molecular Formula C4H11NO3
6
Promotions Available

HEPES Sodium Salt (White Powder), Fisher BioReagents

CAS: 75277-39-3 Molecular Formula: C8H17N2NaO4S Molecular Weight (g/mol): 260.28 MDL Number: MFCD00036463 InChI Key: RDZTWEVXRGYCFV-UHFFFAOYSA-M PubChem CID: 2724248 ChEBI: CHEBI:46758 IUPAC Name: sodium 2-[4-(2-hydroxyethyl)piperazin-1-yl]ethane-1-sulfonate SMILES: [Na+].OCCN1CCN(CCS([O-])(=O)=O)CC1

PubChem CID 2724248
CAS 75277-39-3
Molecular Weight (g/mol) 260.28
ChEBI CHEBI:46758
MDL Number MFCD00036463
SMILES [Na+].OCCN1CCN(CCS([O-])(=O)=O)CC1
IUPAC Name sodium 2-[4-(2-hydroxyethyl)piperazin-1-yl]ethane-1-sulfonate
InChI Key RDZTWEVXRGYCFV-UHFFFAOYSA-M
Molecular Formula C8H17N2NaO4S
7
Promotions Available

MOPS (Fine White Crystals/Molecular Biology), Fisher BioReagents™

CAS: 1132-61-2 Molecular Formula: C7H15NO4S Molecular Weight (g/mol): 209.26 MDL Number: MFCD00006183 InChI Key: DVLFYONBTKHTER-UHFFFAOYSA-N Synonym: 3-(4-Morpholino)propane sulfonic acid PubChem CID: 70807 ChEBI: CHEBI:44115 IUPAC Name: 3-morpholin-4-ylpropane-1-sulfonic acid SMILES: [O-]S(=O)(=O)CCC[NH+]1CCOCC1

PubChem CID 70807
CAS 1132-61-2
Molecular Weight (g/mol) 209.26
ChEBI CHEBI:44115
MDL Number MFCD00006183
SMILES [O-]S(=O)(=O)CCC[NH+]1CCOCC1
Synonym 3-(4-Morpholino)propane sulfonic acid
IUPAC Name 3-morpholin-4-ylpropane-1-sulfonic acid
InChI Key DVLFYONBTKHTER-UHFFFAOYSA-N
Molecular Formula C7H15NO4S
8

TBE Buffer, Tris-Borate-EDTA, 1X Solution, Electrophoresis, Fisher BioReagents

Name Note 1X Solution
CAS 7732-18-5
Protease Protease free
Color Colorless
Physical Form Liquid
pH 8.2 to 8.4
Chemical Name or Material Tris-Borate-EDTA
Grade Electrophoresis
Synonym TBE
DNase DNase free
Recommended Storage RT
Filtered Through Filtered through a 0.2-micron filter.
ChemAlert Storage Symbol Gray
9

PBS, Phosphate Buffered Saline, 1X Powder, pH 7.4, Fisher BioReagents

Color White
Packaging Poly Bottle
Physical Form Powder
Recommended Storage Room temperature
10

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
11

Phosphate Buffered Saline (PBS), 10X Powder, pH 7.4, Fisher BioReagents™

Phosphate Buffered Saline (PBS), 10X Powder provides a convenient way to make 1 L of 10X stock PBS solution.

12

PBS, Phosphate Buffered Saline, 10X Solution, Fisher BioReagents™

Commonly used buffer

Physical Form Liquid
Recommended Storage Room temperature
13
Promotions Available

MES (Fine White Crystals), Fisher BioReagents

CAS: 145224-94-8 Molecular Formula: C6H15NO5S Molecular Weight (g/mol): 213.248 InChI Key: MIIIXQJBDGSIKL-UHFFFAOYSA-N Synonym: 2-(4-Morpholino)ethane Sulfonic Acid,2-(N-Morpholino)ethanesulfonic acid hydrate PubChem CID: 16218417 IUPAC Name: 2-morpholin-4-ylethanesulfonic acid;hydrate SMILES: C1COCCN1CCS(=O)(=O)O.O

PubChem CID 16218417
CAS 145224-94-8
Molecular Weight (g/mol) 213.248
SMILES C1COCCN1CCS(=O)(=O)O.O
Synonym 2-(4-Morpholino)ethane Sulfonic Acid,2-(N-Morpholino)ethanesulfonic acid hydrate
IUPAC Name 2-morpholin-4-ylethanesulfonic acid;hydrate
InChI Key MIIIXQJBDGSIKL-UHFFFAOYSA-N
Molecular Formula C6H15NO5S
14
Promotions Available

Bis-Tris, Fisher BioReagents

CAS: 6976-37-0 Molecular Formula: C8H19NO5 Molecular Weight (g/mol): 209.242 InChI Key: OWMVSZAMULFTJU-UHFFFAOYSA-N Synonym: 2,2-Bis(hydroxymethyl)-2,2?,2?-nitrilotriethanol,2, 2-Bis(hydroxymethyl)-2, 2?,Bis(2-hydroxyethyl)amino-tris(hydroxymethyl)methane PubChem CID: 81462 ChEBI: CHEBI:41250 IUPAC Name: 2-[bis(2-hydroxyethyl)amino]-2-(hydroxymethyl)propane-1,3-diol SMILES: C(CO)N(CCO)C(CO)(CO)CO

PubChem CID 81462
CAS 6976-37-0
Molecular Weight (g/mol) 209.242
ChEBI CHEBI:41250
SMILES C(CO)N(CCO)C(CO)(CO)CO
Synonym 2,2-Bis(hydroxymethyl)-2,2?,2?-nitrilotriethanol,2, 2-Bis(hydroxymethyl)-2, 2?,Bis(2-hydroxyethyl)amino-tris(hydroxymethyl)methane
IUPAC Name 2-[bis(2-hydroxyethyl)amino]-2-(hydroxymethyl)propane-1,3-diol
InChI Key OWMVSZAMULFTJU-UHFFFAOYSA-N
Molecular Formula C8H19NO5
15

TBS, Tris Buffered Saline, 1X Solution, pH 7.4, Molecular Biology, Fisher BioReagents

Boiling Point 100°C
Name Note 1X Solution, pH 7.4
CAS 77-86-1
Protease Protease free
Color Colorless
Physical Form Liquid
Chemical Name or Material Tris Buffered Saline
Grade Molecular Biology
Synonym TBS
DNase DNase free
Recommended Storage RT
ChemAlert Storage Symbol Gray