Buffers and Standards

Hydrogen ion buffers comprising a mixture of a weak acid and its conjugate base or vice-versa and used to stabilize pH; also diluents, washing solutions, and standard-value solutions used for a broad array of scientific calibration purposes.

The buffers used to calibrate pH meters may be certified and/or traceable to the National Institute of Standards and Technology (NIST). These buffers may also be color-coded for easy identification:

Red: pH 4.0
Yellow: pH 7.0
Blue: pH 10.0

Chromatography Standards (17,703)

Spectroscopy Standards (2,737)

Matrix Blanks and Standardization Solutions (1,889)

Environmental Testing Standards (1,401)

Life Science Buffers (1,306)

Electrochemistry Buffers (942)

General Chemistry Solutions (685)

Electrochemistry Standards (307)

Viscosity Standards (273)

Karl Fischer Buffers and Reagents (255)

Isotope Standards (100)

Quality Control and Proficiency Samples (58)

Osmolality Standards (17)

Kjeldahl Buffers and Reagents (16)

Matrix Modifiers (10)

1 – 15 of 21,309 results

Buffer Solution, pH 10.00, Reagecon™

Certified by an ISO 17025 accredited test method and fully NIST traceable. Reagecon™ Buffer Solution, pH 10.00 is tested at 20°C or 25°C to an accuracy level of ±0.01. This calibration and control buffer is specially formulated to ensure its stability, even after opening the bottle.

Pricing and Availability
Specifications

Boiling Point	100°C
Color	Colorless
Solubility Information	Fully miscible in water
Traceability to NIST	Yes
Physical Form	Liquid
Odor	Characteristic
Solution Type	pH Buffer
Melting Point	0°C

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Thermo Scientific™ Orion™ pH Buffer Bottles

Perform accurate, reproducible pH calibrations with these color-coded buffer bottles.

Pricing and Availability
Specifications

For Use With (Equipment)	pH Meter and Electrode
Traceability to NIST	Yes
Physical Form	Liquid
Chemical Name or Material	pH Buffer, bottles

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Buffer Solution pH7.00 (Phosphate), NIST Standard Solution ready to use for pH measurement, Fisher Chemical™

MDL Number: 217672

Pricing and Availability
Specifications

MDL Number	217672

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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

Pricing and Availability
Specifications

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

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Buffer Colour Coded Solution pH7.00 (Phosphate) Yellow, NIST Standard Solution ready to use for pH measurement, Fisher Chemical™

CAS: 7778-77-0 Molecular Formula: H2KO4P Molecular Weight (g/mol): 136.08 InChI Key: GNSKLFRGEWLPPA-UHFFFAOYSA-M IUPAC Name: potassium dihydrogen phosphate SMILES: [K+].OP(O)([O-])=O

Pricing and Availability
Specifications

CAS	7778-77-0
Molecular Weight (g/mol)	136.08
SMILES	[K+].OP(O)([O-])=O
IUPAC Name	potassium dihydrogen phosphate
InChI Key	GNSKLFRGEWLPPA-UHFFFAOYSA-M
Molecular Formula	H2KO4P

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Gibco™ PBS, pH 7.2

PBS, pH 7.2

Pricing and Availability
Specifications

Includes	No Sodium Pyruvate
Physical Form	Liquid
pH	7.2
Chemical Name or Material	Phosphate Buffered Saline (PBS)
Recommended Storage	15°to 30°C
Concentration	1 X
For Use With (Application)	Mammalian Cell Culture
Osmolality	280 to 320 mOsm/kg

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Buffer Solution pH4.00 (Phthalate), NIST Standard Solution ready to use for pH measurement, Fisher Chemical™

MDL Number: 217672

Pricing and Availability
Specifications

MDL Number	217672

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Thermo Scientific™ Orion™ pH Buffer Individual Use Pouches

Ensure fresh, ready-to-use standards for pH calibration with these pH Buffer individual use pouches.

Pricing and Availability
Specifications

Boiling Point	100°C
For Use With (Equipment)	pH Meter and Electrode, single-use
Solubility Information	Soluble
Traceability to NIST	Yes
Packaging	Pouch
Physical Form	Liquid
Chemical Name or Material	pH Buffer, individual use pouches
For Use With (Application)	pH calibration
Solution Type	Buffer

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TBS, Tris Buffered Saline, 10X Solution, pH 7.4, Molecular Biology, Fisher BioReagents™

Pricing and Availability
Specifications

Boiling Point	100°C
Color	Colorless
Physical Form	Liquid
Chemical Name or Material	Tris Buffered Saline
Grade	Molecular Biology
DNase	DNase free
ChemAlert Storage Symbol	Gray
Name Note	10X Solution
Concentration or Composition (by Analyte or Components)	10X solution contains 1.37M Sodium Chloride, 0.027M Potassium Chloride, and 0.25M Tris/Tris-HCl.
CAS	7732-18-5
Protease	Protease free
pH	7.5
Synonym	TBS
Purity Grade Notes	DNase-, RNase- and Protease-Free
Recommended Storage	RT

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TAE Buffer, Tris-Acetate-EDTA, 50X Solution, Electrophoresis, Fisher BioReagents™

Tris-Acetate-EDTA, CAS Number-77-86-1, 60-00-4, 6850-28-8, TAE, 4L, Gray, Tris (24%), Acetic Acid (5.0%), and EDTA (<2%)., DNase free, Pass Test, Filtered through a 0.2-micron filter., Electrophoresis, 50X Solution, Poly CUBE, Liquid, Protease free, DNase-, RNase- and Protease-Free, RT

Pricing and Availability
Specifications

Name Note	50X Solution
Concentration or Composition (by Analyte or Components)	Tris (24%), Acetic Acid (5.0%), and EDTA (<2%).
CAS	6850-28-8
Protease	Protease free
Physical Form	Liquid
Grade	Electrophoresis
Synonym	TAE
Purity Grade Notes	DNase-, RNase- and Protease-Free
DNase	DNase free
Recommended Storage	RT
Filtered Through	Filtered through a 0.2-micron filter.
ChemAlert Storage Symbol	Gray

TE Buffer, Tris-EDTA, 1X Solution, pH 8.0, Molecular Biology, Fisher BioReagents

Pricing and Availability
Specifications

Color	Colorless
Physical Form	Liquid
Chemical Name or Material	Tris-EDTA
Grade	Molecular Biology
DNase	DNase free
Filtered Through	Filtered through a 5-micron filter.
ChemAlert Storage Symbol	Gray
Name Note	1X Solution, pH 8.0
CAS	7732-18-5
Protease	Protease free
Health Hazard 3	Emergency Overview May cause eye, skin, and respiratory tract irritation. Avoid contact with skin and eyes. Do not breathe dust. Do not breathe vapors or spray mist. Wash off immediately with soap and plenty of water removing all contaminated clothes and shoes. Obtain medical attention. Rinse immediately with plenty of water, also under the eyelids, for at least 15 minutes. Obtain medical attention. Remove from exposure, lie down. Move to fresh air. If breathing is difficult, give oxygen. If not breathing, give artificial respiration. If not breathing, give artificial respiration. Obtain medical attention. NFPA Health:1 Flammability:0 Instability:0
Health Hazard 2	CAUTION!
pH	7.4 to 8.1
Synonym	TE
Recommended Storage	RT

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Thermo Scientific™ Eutech Handheld Meters Calibration Solution, 1413μS/cm KCl

Periodic calibration with accurate standards is recommended for meters

Pricing and Availability

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Buffer Solution pH10.00 (Borate), NIST Standard Solution ready to use for pH measurement, Fisher Chemical™

MDL Number: 217672

Pricing and Availability
Specifications

MDL Number	217672

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

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

Pricing and Availability
Specifications

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

PBS, Phosphate Buffered Saline, 1X Solution, pH 7.4, Fisher BioReagents™

Pricing and Availability
Specifications

Packaging	Poly Cube
Physical Form	Liquid
pH	7.3 to 7.5
Recommended Storage	Room temperature
Melting Point	0°C

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Buffers and Standards

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Buffer Solution, pH 10.00, Reagecon™ SureTRACESupports traceability with guaranteed access to certificates and proactive change notifications.Learn More

Gibco™ PBS, pH 7.2 Greener Choice ProductThis product offers one or more environmental benefits itemized in the U.S. FTC “Green Guides.”Learn More About the Greener Choice Program

Buffer Solution, pH 10.00, Reagecon™

Gibco™ PBS, pH 7.2