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 (22,719)

Spectroscopy Standards (5,739)

General Chemistry Solutions (5,076)

Matrix Blanks and Standardization Solutions (4,263)

Life Science Buffers (3,953)

Electrochemistry Buffers (2,326)

Environmental Testing Standards (1,886)

Electrochemistry Standards (1,243)

Karl Fischer Buffers and Reagents (467)

Isotope Standards (338)

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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Available on GSA/VA Contract (381)
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Production Products (164)
Science Education (218)
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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 (469)
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 (374)
Buffer, Storage (2)
Calibration (8)
Cleaning (1)
Colored pH Buffer (35)

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Search Within Results

151 – 165 of 43,318 results

151

accumet™ pH 7.00 (Yellow) Buffer, Fisherbrand™

Pricing & Availability
Specifications

Description	pH 7.00 (Yellow) Buffer
Traceability to NIST	Yes
pH	7
Solution Type	Buffer

152

Promotions Available

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

Pricing & 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	Tris-HCl
IUPAC Name	2-amino-2-(hydroxymethyl)propane-1,3-diol
InChI Key	LENZDBCJOHFCAS-UHFFFAOYSA-N
Molecular Formula	C4H11NO3

153

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

154

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

155

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

156

tert-Butyl Alcohol 99.0+%, TCI America™

CAS: 75-65-0 Molecular Formula: C4H10O Molecular Weight (g/mol): 74.123 MDL Number: MFCD00004464 InChI Key: DKGAVHZHDRPRBM-UHFFFAOYSA-N Synonym: tert-butanol,tert-butyl alcohol,2-methyl-2-propanol,t-butanol,t-butyl hydroxide,1,1-dimethylethanol,trimethylcarbinol,trimethyl methanol,2-propanol, 2-methyl,t-butyl alcohol PubChem CID: 6386 ChEBI: CHEBI:45895 IUPAC Name: 2-methylpropan-2-ol SMILES: CC(C)(C)O

Pricing & Availability
Specifications

PubChem CID	6386
CAS	75-65-0
Molecular Weight (g/mol)	74.123
ChEBI	CHEBI:45895
MDL Number	MFCD00004464
SMILES	CC(C)(C)O
Synonym	tert-butanol,tert-butyl alcohol,2-methyl-2-propanol,t-butanol,t-butyl hydroxide,1,1-dimethylethanol,trimethylcarbinol,trimethyl methanol,2-propanol, 2-methyl,t-butyl alcohol
IUPAC Name	2-methylpropan-2-ol
InChI Key	DKGAVHZHDRPRBM-UHFFFAOYSA-N
Molecular Formula	C4H10O

157

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

158

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

159

Promotions Available

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

160

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

161

Thermo Scientific™ Pierce™ IgG Elution Buffer, pH 2.0

Ensure high-yield, nondenaturing antibody purification using IgG affinity purification supports with these gentle buffer solutions.

Pricing & Availability

162

Fluoride Standard, Certified, 1000ppm ±10ppm (1mL = 1mg F^-), LabChem™

CAS: 7681-49-4 Molecular Formula: FNa Molecular Weight (g/mol): 41.99 MDL Number: MFCD00003524 InChI Key: PUZPDOWCWNUUKD-UHFFFAOYSA-M PubChem CID: 5235 ChEBI: CHEBI:28741 IUPAC Name: sodium fluoride SMILES: [F-].[Na+]

Pricing & Availability
Specifications

PubChem CID	5235
CAS	7681-49-4
Molecular Weight (g/mol)	41.99
ChEBI	CHEBI:28741
MDL Number	MFCD00003524
SMILES	[F-].[Na+]
IUPAC Name	sodium fluoride
InChI Key	PUZPDOWCWNUUKD-UHFFFAOYSA-M
Molecular Formula	FNa

163

Ricca Chemical Company Sodium Citrate, 3.8% (w/v), Ricca Chemical

CAS: 6132-04-3 Molecular Formula: C6H9Na3O9 Molecular Weight (g/mol): 294.10 InChI Key: NLJMYIDDQXHKNR-UHFFFAOYSA-K Synonym: trisodium citrate dihydrate,sodium citrate dihydrate,sodium citrate tribasic dihydrate,natriumcitrat-dihydrat,sodium citrate hydrate,1,2,3-propanetricarboxylic acid, 2-hydroxy-, trisodium salt, dihydrate,citronensaeure-tri-na-salz-dihydrat,citric acid trisodium salt dihydrate,citric acid, trisodium salt dihydrate,trisodium 2-hydroxypropane-1,2,3-tricarboxylate dihydrate PubChem CID: 71474 ChEBI: CHEBI:32142 IUPAC Name: trisodium;2-hydroxypropane-1,2,3-tricarboxylate;dihydrate SMILES: C(C(=O)[O-])C(CC(=O)[O-])(C(=O)[O-])O.O.O.[Na+].[Na+].[Na+]

Pricing & Availability
Specifications

PubChem CID	71474
CAS	6132-04-3
Molecular Weight (g/mol)	294.10
ChEBI	CHEBI:32142
SMILES	C(C(=O)[O-])C(CC(=O)[O-])(C(=O)[O-])O.O.O.[Na+].[Na+].[Na+]
Synonym	trisodium citrate dihydrate,sodium citrate dihydrate,sodium citrate tribasic dihydrate,natriumcitrat-dihydrat,sodium citrate hydrate,1,2,3-propanetricarboxylic acid, 2-hydroxy-, trisodium salt, dihydrate,citronensaeure-tri-na-salz-dihydrat,citric acid trisodium salt dihydrate,citric acid, trisodium salt dihydrate,trisodium 2-hydroxypropane-1,2,3-tricarboxylate dihydrate
IUPAC Name	trisodium;2-hydroxypropane-1,2,3-tricarboxylate;dihydrate
InChI Key	NLJMYIDDQXHKNR-UHFFFAOYSA-K
Molecular Formula	C6H9Na3O9

164

Thermo Scientific™ Pierce™ Concentrated Buffer Stocks (10X and 20X)

Save time using Pierce Concentrated Buffer stock solutions (10X and 20X) with simple dilutions to expedite your experiment without sacrificing quality or consistency.

Pricing & Availability

165

Nitrate Nitrogen Standard, 1000 ppm N (4427 ppm NO₃^-), Ricca Chemical

CAS: 7757-79-1 Molecular Formula: KNO3 Molecular Weight (g/mol): 101.10 MDL Number: MFCD00011409 InChI Key: FGIUAXJPYTZDNR-UHFFFAOYSA-N PubChem CID: 24434 ChEBI: CHEBI:63043 IUPAC Name: potassium nitrate SMILES: [K+].[O-][N+]([O-])=O

Pricing & Availability
Specifications

PubChem CID	24434
CAS	7757-79-1
Molecular Weight (g/mol)	101.10
ChEBI	CHEBI:63043
MDL Number	MFCD00011409
SMILES	[K+].[O-][N+]([O-])=O
IUPAC Name	potassium nitrate
InChI Key	FGIUAXJPYTZDNR-UHFFFAOYSA-N
Molecular Formula	KNO3

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Buffers and Standards

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Tris Hydrochloride, 1M Solution (pH 7.5/Mol. Biol.), Fisher BioReagents™ 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

Fluoride Standard, Certified, 1000ppm ±10ppm (1mL = 1mg F-), LabChem™ GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

Thermo Scientific™ Pierce™ Concentrated Buffer Stocks (10X and 20X) GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

Tris Hydrochloride, 1M Solution (pH 7.5/Mol. Biol.), Fisher BioReagents™

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™

Fluoride Standard, Certified, 1000ppm ±10ppm (1mL = 1mg F^-), LabChem™

Thermo Scientific™ Pierce™ Concentrated Buffer Stocks (10X and 20X)