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 (19,201)

Spectroscopy Standards (6,613)

General Chemistry Solutions (5,401)

Matrix Blanks and Standardization Solutions (4,465)

Life Science Buffers (3,481)

Electrochemistry Buffers (2,303)

Environmental Testing Standards (1,989)

Electrochemistry Standards (1,208)

Karl Fischer Buffers and Reagents (626)

Viscosity Standards (251)

Quality Control and Proficiency Samples (192)

Isotope Standards (186)

Kjeldahl Buffers and Reagents (102)

Gel Filtration Standards (54)

Matrix Modifiers (31)

Osmolality Standards (13)

Polarimetric Standards (8)

Smoke Point Reference (2)

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special interests

SureTRACE (27)
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Greener Choice (29)
Production Products (92)
Science Education (183)
Supplier Diversity Program (11,502)

Quantity

0.1 mL (8)
0.1 mg (2)
0.1 mol (1)
0.235 mL (8)
0.5 L (1)
0.5 mL (48)
0.5 mol (1)

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Grade

AAS (56)
AAS Standard (11)
ACS (68)
ACS Reagent (23)
ACS/ASTM E 200/AOAC/EPA (6)
ACS/ASTM E 200/AOAC/USP Volumetric (5)
APHA (3)

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Molecular Weight (g/mol)

0.00 (1)
10.81 (14)
100.09 (33)
100.117 (1)
100.117 g/mol (1)
100.12 (1)
100.121 (1)

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Type

2,2,4-Trimethyl-pentane/water, traceable to SRM from NIST and PTB n (20°C)=1,3915 Certipur (1)
AOAC Internal Standard Mix (1)
Analytical Standard (2,974)
Calibration Standard (33)
Cannabinoids Standard (5)
Certified Reference Material (1,545)
Certified Reference Standard for Chromatography (1)

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For Use With (Equipment)

310 Genetic Analyzer, 3100 Genetic Analyzer, 3130xl Genetic Analyzer, 3730xl DNA Analyzer; SeqStudio (1)
3500 Series Genetic Analyzers, SeqStudio Flex Series Genetic Analyzers (1)
3730xl DNA Analyzer, SeqStudio Genetic Analyzer, 3730 DNA Analyzer (1)
AA, ICP, ICP/MS, IC, XRF, and Other Analytical Instrumentation (808)
AA, ICP, ICP/MS, IC, XRF, and other analytical instrumentation (10)
AQUAfast Colorimeter (2)
Aluminum Analyzer (2)

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Percent Purity

≥ 99.9% (1)
≥10% (1)
≥14% (BF3) (1)
≥30% (RT) (1)
≥30% (titration) (1)
≥35% (RT) (1)
≥39% (1)

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Color

Amber (16)
Black (12)
Black to Gray (2)
Blue (46)
Blue to Colorless (2)
Blue/Green (7)
Blue/White (2)

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pH

≥12 to ≤14 (6)
>11 (1)
>11.5 (2)
>12 (1)
>13 (2)
>7 (1)
>8 (1)

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Melting Point

≥300°C (1)
>1600°C (1)
>210°C (1)
>240°C (5)
>280°C (decomposition) (1)
>300°C (34)
>300°C (decomposes before melting) (1)

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Boiling Point

>2200°C (1013 hPa) (1)
>360°C (1)
>500°C (3)
∼100°C (3)
100°C (516)
100°C (18 mmHg) (1)
100°C (2 mmHg); 356.1°C (760 mmHg) (2)

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1 – 15 of 40,422 results

Buffer Solution, pH 7.00 (Certified), Fisher Chemical™

Potassium Phosphate Monobasic/Sodium Hydroxide

Pricing & Availability
Specifications

Color	Colorless
Traceability to NIST	Traceable to NIST.
Physical Form	Liquid
Chemical Name or Material	Buffer Solution, pH 7.00
Grade	Certified
Identification	Pass Test
ChemAlert Storage Symbol	Gray
Density	1.003g/cm³
Vapor Pressure	14mmHg at 20°C
CAS	7732-18-5
MDL Number	MFCD00134130
pH	7.00
Synonym	Chlorine Titrimeter Reagent
Melting Point	0°C

Buffer Solution, pH 10.00 (Certified), Fisher Chemical™

Potassium Carbonate/Potassium Tetraborate/Potassium Hydroxide/Disodium EDTA Dihydrate

Pricing & Availability
Specifications

CAS	12228-88-5
Health Hazard 3	Emergency Overview May cause eye, skin, and respiratory tract irritation. Handle in accordance with good industrial hygiene and safety practice. Wear personal protective equipment. Wash off immediately with plenty of water for at least 15 minutes. Get medical attention immediately if symptoms occur. 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. Get medical attention immediately if symptoms occur. Do not induce vomiting. Obtain medical attention. Obtain medical attention. . NFPA Health:1 Flammability:0 Instability:0
MDL Number	MFCD00146206
Health Hazard 2	CAUTION!
Color	Colorless
Traceability to NIST	Traceable to NIST.
Physical Form	Liquid
pH	10
Chemical Name or Material	Buffer Solution, pH 10.00
Grade	Certified
Identification	Pass Test
ChemAlert Storage Symbol	Gray

Buffer Solution, pH 7.00, Color-Coded Yellow (Certified), Fisher Chemical™

Pricing & Availability
Specifications

Boiling Point	100°C
Description	Potassium Phosphate Monobasic/Sodium Hydroxide. pH/temperature conversions given on label.
Color	Yellow
Traceability to NIST	Traceable to NIST.
Physical Form	Liquid
Chemical Name or Material	Buffer Solution, pH 7.00, Color-Coded Yellow
Grade	Certified
Identification	Pass Test
ChemAlert Storage Symbol	Gray
Density	1.0g/cm³
Vapor Pressure	760mmHg at 20°C
Absorbance	Pass Test
CAS	1934-21-0
Health Hazard 3	Emergency Overview May cause eye, skin, and respiratory tract irritation. Handle in accordance with good industrial hygiene and safety practice. Wash off immediately with plenty of water for at least 15 minutes. Get medical attention immediately if symptoms occur. 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. Get medical attention immediately if symptoms occur. Do not induce vomiting. Obtain medical attention. . . NFPA Health:1 Flammability:0 Instability:0
MDL Number	MFCD00134130
Health Hazard 2	CAUTION!
Solubility Information	Soluble in water
pH	7.00
Specific Gravity	1
Melting Point	0°C

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

Pricing & 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

FisherTab™ CT-37 Kjeldahl Tablets, Fisher Chemical

Composition per tablet: 3.5g K₂SO₄ + 0.4g CuSO₄

Pricing & Availability
Specifications

CAS	7778-80-5
MDL Number	MFCD00010981
Chemical Name or Material	FisherTab™ CT-37 Kjeldahl Tablets
Assay Percent Range	90%

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 & 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

Buffer Solution, pH 1.00 (Certified), Fisher Chemical

Pricing & Availability
Specifications

CAS	7732-18-5
MDL Number	MFCD00146206
Chemical Name or Material	Buffer Solution, pH 1.01
Grade	Certified

Buffer Solution, pH 10, Color-coded Blue (Certified), Fisher Chemical™ PROMO

Color-coded buffer solution for research use.

Pricing & Availability

VeriSpec™ pH Buffer, Certified Reference Material

ISO 17025/17034 pH Buffer Certified Reference Materials provide the highest level of quality assurance. A certificate of analysis providing the specified property value, uncertainty, and traceability is available with every bottle.

Pricing & Availability
Specifications

For Use With (Equipment)	pH Meter and Electrode
Formulation	Aqueous Solution
Traceability to NIST	NIST Traceable
Physical Form	Liquid
Certificate of Analysis	Yes
Solution Type	pH Buffer
Product Line	VeriSpec

Conductivity Calibration Pouches, Oakton™

Calibrate on the go with these single-use 20mL calibration pouches. Oakton™ Conductivity Calibration Pouches are sealed to ensure freshness.

Pricing & Availability
Specifications

Type	Conductivity Standard
Quantity	20 Single-use Pouches
Chemical Name or Material	Cole-Parmer Conductivity Standards

Buffer Solution, pH 8.00 (Certified), Fisher Chemical™

Potassium Phosphate Monobasic/Sodium Hydroxide

Pricing & Availability
Specifications

CAS	7732-18-5
Health Hazard 3	Emergency Overview Irritating to eyes and skin. The toxicological properties have not been fully investigated. 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. Get medical attention immediately if symptoms occur. Do not induce vomiting. Do not induce vomiting. Obtain medical attention. NFPA Health:2 Flammability:0 Instability:0
MDL Number	MFCD00147253
Health Hazard 2	WARNING!
Traceability to NIST	Traceable to NIST.
Physical Form	Liquid
pH	8.0
Chemical Name or Material	Buffer Solution, pH 8.00
Grade	Certified
Identification	Pass Test
ChemAlert Storage Symbol	Gray

accumet™ Standard All-in-One pH Buffer Kit, Fisherbrand™

Pricing & Availability

accumet™ pH 5.00 Buffer, Fisherbrand™

Pricing & Availability

Thermo Scientific Chemicals TRIS-buffered saline (TBS, 10X), with 0.5% Tween 20

CAS: 77-86-1 Molecular Formula: C4H11NO3 Molecular Weight (g/mol): 121.136 MDL Number: MFCD00678198 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

Pricing & Availability
Specifications

PubChem CID	6503
CAS	77-86-1
Molecular Weight (g/mol)	121.136
ChEBI	CHEBI:9754
MDL Number	MFCD00678198
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

Buffer Solution, pH 4, Color-coded Red (Certified), Fisher Chemical™ PROMO

Color-coded buffer solution made of Potassium Hydrogen Phthalate.

Pricing & Availability

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Buffers and Standards

Buffers and Standards

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VeriSpec™ pH Buffer, Certified Reference Material Supplier Diversity PartnerSmall and/or diverse supplier based on Federal laws and SBA requirements.Learn More

VeriSpec™ pH Buffer, Certified Reference Material