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 (22,745)

Spectroscopy Standards (5,743)

General Chemistry Solutions (5,077)

Matrix Blanks and Standardization Solutions (4,270)

Life Science Buffers (3,956)

Electrochemistry Buffers (2,329)

Environmental Testing Standards (1,888)

Electrochemistry Standards (1,247)

Karl Fischer Buffers and Reagents (470)

Isotope Standards (339)

Viscosity Standards (255)

Quality Control and Proficiency Samples (184)

Kjeldahl Buffers and Reagents (90)

Gel Filtration Standards (59)

Matrix Modifiers (29)

Osmolality Standards (13)

Smoke Point Reference (10)

Polarimetric Standards (6)

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Grade

AAS (55)
AAS Standard (11)
ACS (55)
ACS Reagent (24)
ACS/ASTM E 200/AOAC/EPA (7)
ACS/ASTM E 200/AOAC/USP Volumetric (5)
APHA/EPA (5)

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Molecular Weight (g/mol)

0.00 (1)
10.81 (14)
100.09 (33)
100.117 g/mol (1)
100.12 (1)
100.121 (1)
100.15 (1)

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Quantity

0.1 mL (1)
0.1 mol (1)
0.5 L (1)
0.5 mL (15)
0.5 mol (1)
1 Bottle (5)
1 Box (1)

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Percent Purity

≥14% (BF3) (1)
≥30% (RT) (1)
≥30% (titration) (1)
≥35% (RT) (1)
≥40% (3)
≥49% (2)
≥50% (3)

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pH

≥12 to ≤14 (6)
>11.5 (2)
>12 (44)
>13 (100)
>8 (1)
<0.5 (3)
<1 (99)

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Solvent or Matrix

#2 Diesel Fuel (12)
10% HCl (19)
10% HCl/1% HNO₃ (1)
10% HNO3 (13)
15% HCl (3)
15% HNO₃ (2)
2% HCl (29)

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Concentration

≈0.000027 M (3)
≈0.0035 M (3)
≥30% (1)
≤0.1% in nitric acid (1)
≤2.5% KCl (T) (8)
0.00017 M (3)
0.001 M KCl (1)

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Physical Form

Aqueous Solution (30)
Capsule (11)
Chemvelope (1)
Clear Liquid (1)
Clear Liquid at 20°C (2)
Colorless Liquid (1)
Crystalline (17)

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Technique

AA (471)
Acidimetry (3)
Calibrating the absorbance of spectrophotometers (1)
Calibration (7)
Calibration and Matrix Spikes (1)
Calibration and Verification (16)
Calibration and Verification of Kinematic and Dynamic Viscosity Test (15)

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Solution Type

Antigen Retrieval Reagent (1)
Aqueous (2)
Buffer (375)
Buffer, Storage (2)
Calibration (8)
Cleaning (1)
Colored pH Buffer (35)

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Search Within Results

151 – 165 of 43,369 results

151

Hydrogen Peroxide, 50% (Certified), Fisher Chemical

CAS: 7722-84-1 Molecular Formula: H2O2 Molecular Weight (g/mol): 34.014 MDL Number: MFCD00011333 InChI Key: MHAJPDPJQMAIIY-UHFFFAOYSA-N Synonym: oxydol,perhydrol,superoxol,interox,hydrogen dioxide,inhibine,peroxaan,albone,hioxyl,kastone PubChem CID: 784 ChEBI: CHEBI:16240 IUPAC Name: hydrogen peroxide SMILES: OO

Pricing & Availability
Specifications

PubChem CID	784
CAS	7722-84-1
Molecular Weight (g/mol)	34.014
ChEBI	CHEBI:16240
MDL Number	MFCD00011333
SMILES	OO
Synonym	oxydol,perhydrol,superoxol,interox,hydrogen dioxide,inhibine,peroxaan,albone,hioxyl,kastone
IUPAC Name	hydrogen peroxide
InChI Key	MHAJPDPJQMAIIY-UHFFFAOYSA-N
Molecular Formula	H2O2

152

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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

153

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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

Pricing & Availability
Specifications

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

154

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Fisher Scientific Sodium Thiosulfate Pentahydrate Solution (0.1N (N/10)/Certified), Fisher Chemical™

CAS: 10102-17-7 Molecular Formula: H10Na2O8S2 Molecular Weight (g/mol): 248.172 MDL Number: MFCD00003499 InChI Key: PODWXQQNRWNDGD-UHFFFAOYSA-L Synonym: sodium thiosulfate pentahydrate,ametox,sodium thiosulfate, pentahydrate,antichlor,tinver,disodium thiosulfate pentahydrate,unii-hx1032v43m,ccris 3952,thiosulfuric acid, disodium salt, pentahydrate,sodium hyposulfite pentahydrate PubChem CID: 61475 ChEBI: CHEBI:32150 IUPAC Name: disodium;dioxido-oxo-sulfanylidene-$l^{6}-sulfane;pentahydrate SMILES: O.O.O.O.O.[O-]S(=O)(=S)[O-].[Na+].[Na+]

Pricing & Availability
Specifications

PubChem CID	61475
CAS	10102-17-7
Molecular Weight (g/mol)	248.172
ChEBI	CHEBI:32150
MDL Number	MFCD00003499
SMILES	O.O.O.O.O.[O-]S(=O)(=S)[O-].[Na+].[Na+]
Synonym	sodium thiosulfate pentahydrate,ametox,sodium thiosulfate, pentahydrate,antichlor,tinver,disodium thiosulfate pentahydrate,unii-hx1032v43m,ccris 3952,thiosulfuric acid, disodium salt, pentahydrate,sodium hyposulfite pentahydrate
IUPAC Name	disodium;dioxido-oxo-sulfanylidene-$l^{6}-sulfane;pentahydrate
InChI Key	PODWXQQNRWNDGD-UHFFFAOYSA-L
Molecular Formula	H10Na2O8S2

155

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Titration Solvent, Fisher Chemical

Pricing & Availability

156

Ricca Chemical Company Potassium Chloride Conductivity Standard, 1000 μS/cm at 25°C, Ricca Chemical

CAS: 7447-40-7 Molecular Formula: ClK Molecular Weight (g/mol): 74.55 MDL Number: MFCD00011360 InChI Key: WCUXLLCKKVVCTQ-UHFFFAOYSA-M PubChem CID: 4873 ChEBI: CHEBI:32588 IUPAC Name: potassium chloride SMILES: [Cl-].[K+]

Pricing & Availability
Specifications

PubChem CID	4873
CAS	7447-40-7
Molecular Weight (g/mol)	74.55
ChEBI	CHEBI:32588
MDL Number	MFCD00011360
SMILES	[Cl-].[K+]
IUPAC Name	potassium chloride
InChI Key	WCUXLLCKKVVCTQ-UHFFFAOYSA-M
Molecular Formula	ClK

157

Corning™ Molecular Biology Reagents

Used in molecular biology, nucleic acid purification applications

Pricing & Availability
Specifications

Quantity	6 x 1 L

158

Ricca Chemical Company Iodine Monochloride Solution, Wijs, for Iodine Absorption Number of Fats and Oils, Ricca Chemical

CAS: 64-19-7 Molecular Formula: C2H4O2 Molecular Weight (g/mol): 60.05 MDL Number: MFCD00036152 InChI Key: QTBSBXVTEAMEQO-UHFFFAOYSA-N Synonym: ethanoic acid,ethylic acid,acetic acid, glacial,methanecarboxylic acid,vinegar acid,glacial,acetasol,acide acetique,essigsaeure PubChem CID: 176 ChEBI: CHEBI:15366 IUPAC Name: acetic acid SMILES: CC(O)=O

Pricing & Availability
Specifications

PubChem CID	176
CAS	64-19-7
Molecular Weight (g/mol)	60.05
ChEBI	CHEBI:15366
MDL Number	MFCD00036152
SMILES	CC(O)=O
Synonym	ethanoic acid,ethylic acid,acetic acid, glacial,methanecarboxylic acid,vinegar acid,glacial,acetasol,acide acetique,essigsaeure
IUPAC Name	acetic acid
InChI Key	QTBSBXVTEAMEQO-UHFFFAOYSA-N
Molecular Formula	C2H4O2

159

Gibco™ Sodium Hydroxide (NaOH) Solutions, 0.1–1.0 M

Gibco NaOH solutions offer more options for supply security and dual sourcing of the highest volume process liquid in bioprocessing manufacturing.

Pricing & Availability
Specifications

Boiling Point	100°C
Percent Purity	95 to 100%
CAS	1310-73-2
Color	Clear
Packaging	Bioprocess Container
pH	≥12 to ≤14
Chemical Name or Material	Sodium Hydroxide
Grade	Compendial
Synonym	Caustic soda, Acidity regulatory, Lye or Soda lye
Shelf Life	12 months
Melting Point	0°C

160

Phosphate Standard, (1mL = 1mg PO₄), Certified, 1000ppm ±10ppm, LabChem™

CAS: 7778-77-0 Molecular Formula: H2KO4P Molecular Weight (g/mol): 136.08 MDL Number: MFCD00011401 MFCD00147253 InChI Key: GNSKLFRGEWLPPA-UHFFFAOYSA-M PubChem CID: 516951 ChEBI: CHEBI:63036 IUPAC Name: potassium dihydrogen phosphate SMILES: [K+].OP(O)([O-])=O

Pricing & Availability
Specifications

PubChem CID	516951
CAS	7778-77-0
Molecular Weight (g/mol)	136.08
ChEBI	CHEBI:63036
MDL Number	MFCD00011401 MFCD00147253
SMILES	[K+].OP(O)([O-])=O
IUPAC Name	potassium dihydrogen phosphate
InChI Key	GNSKLFRGEWLPPA-UHFFFAOYSA-M
Molecular Formula	H2KO4P

161

Thermo Scientific Chemicals Sodium citrate, 0.5M buffer soln., pH 6.0

Pricing & Availability
Specifications

Health Hazard 3	GHS P Statement P280-P264-P305+P351+P338-P337+P313 Wear protective gloves/protective clothing/eye protection/face protection. Wash thoroughly after handling. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. If eye irritation persists: Get medical advice/attention.
MDL Number	MFCD00012462
Health Hazard 2	GHS H Statement H319 Causes serious eye irritation.
Color	Colorless
Solubility Information	Fully miscible in water.
Physical Form	Liquid
pH	6.0
Health Hazard 1	Warning
Chemical Name or Material	Sodium citrate buffer soln.
TSCA	Yes
Recommended Storage	Keep cold
Concentration	0.5 M
Odor	Odorless

162

Thermo Scientific Chemicals TAE (50X), TRIS + acetate + EDTA

TAE (50X), TRIS + acetate + EDTA is a buffer composed of Tris, acetate, and EDTA components and is used in electrophoresis of nucleic acids in agarose and polyacrylamide gels.

Pricing & Availability
Specifications

Description	Colorless
Physical Form	Liquid
Chemical Name or Material	Buffer
Recommended Storage	Ambient temperatures
Concentration	50X

163

Buffer, Reference Standard, pH 13.00 ± 0.01 at 25°C, Ricca Chemical

Pricing & Availability
Specifications

Name Note	pH 13.00± 0.01 at 25°C
CAS	7447-40-7
For Use With (Equipment)	pH Meter and Electrode
Color	Colorless
Physical Form	Liquid
pH	13
CAS Min %	0.36
Chemical Name or Material	Buffer, Reference Standard
Concentration	1X
For Use With (Application)	Calibration
Solution Type	pH Buffer
CAS Max %	0.37

164

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Gibco™ HEPES (1M)

Gibco HEPES (4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid) is a zwitterionic organic chemical buffering agent commonly used in cell culture media. It is membrane impermeable, relatively stable, and has limited interference in key processes.

Pricing & Availability
Specifications

Sterilization Method	Sterile-filtered
Physical Form	Liquid
Chemical Name or Material	Zwitterionic Organic Chemical Buffer
Grade	Biochemical
For Use With (Application)	Chromatin Biology
Sterility	Sterile
Solution Type	Buffer

165

Potassium Chloride Saturated, Electrode Filling Solution, Certified, ≥ 4.0M, LabChem™

CAS: 7447-40-7 Molecular Formula: ClK Molecular Weight (g/mol): 74.55 MDL Number: MFCD00011360 InChI Key: WCUXLLCKKVVCTQ-UHFFFAOYSA-M Synonym: potassium chloride,enseal,muriate of potash,klotrix,sylvite,slow-k,potassium chloride kcl,klor-con,chlorvescent,kalitabs PubChem CID: 4873 ChEBI: CHEBI:32588 IUPAC Name: potassium chloride SMILES: [Cl-].[K+]

Pricing & Availability
Specifications

PubChem CID	4873
CAS	7447-40-7
Molecular Weight (g/mol)	74.55
ChEBI	CHEBI:32588
MDL Number	MFCD00011360
SMILES	[Cl-].[K+]
Synonym	potassium chloride,enseal,muriate of potash,klotrix,sylvite,slow-k,potassium chloride kcl,klor-con,chlorvescent,kalitabs
IUPAC Name	potassium chloride
InChI Key	WCUXLLCKKVVCTQ-UHFFFAOYSA-M
Molecular Formula	ClK

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Buffers and Standards

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Hydrogen Peroxide, 50% (Certified), Fisher Chemical GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

TBS, Tris Buffered Saline, 10X Solution, pH 7.4, Molecular Biology, Fisher BioReagents™ GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

Fisher Scientific Sodium Thiosulfate Pentahydrate Solution (0.1N (N/10)/Certified), Fisher Chemical™ GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

Ricca Chemical Company Potassium Chloride Conductivity Standard, 1000 μS/cm at 25°C, Ricca Chemical GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

Buffer, Reference Standard, pH 13.00 ± 0.01 at 25°C, Ricca Chemical SureTRACESupports traceability with guaranteed access to certificates and proactive change notifications.Learn More

Gibco™ HEPES (1M) Greener ChoiceOffers one or more environmental benefits itemized in the U.S. FTC “Green Guides.”Learn More

Potassium Chloride Saturated, Electrode Filling Solution, Certified, ≥ 4.0M, LabChem™ GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

Hydrogen Peroxide, 50% (Certified), Fisher Chemical

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

Fisher Scientific Sodium Thiosulfate Pentahydrate Solution (0.1N (N/10)/Certified), Fisher Chemical™

Ricca Chemical Company Potassium Chloride Conductivity Standard, 1000 μS/cm at 25°C, Ricca Chemical

Buffer, Reference Standard, pH 13.00 ± 0.01 at 25°C, Ricca Chemical

Gibco™ HEPES (1M)

Potassium Chloride Saturated, Electrode Filling Solution, Certified, ≥ 4.0M, LabChem™