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

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Molecular Weight (g/mol)

0.00 (1)
10.81 (14)
100.09 (33)
100.117 g/mol (1)
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0.1 mL (1)
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0.5 mL (15)
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Percent Purity

≥14% (BF3) (1)
≥30% (RT) (1)
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≥40% (3)
≥49% (2)
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pH

≥12 to ≤14 (6)
>11.5 (2)
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Solvent or Matrix

#2 Diesel Fuel (12)
10% HCl (19)
10% HCl/1% HNO₃ (1)
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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)
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Chemvelope (1)
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Technique

AA (469)
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Solution Type

Antigen Retrieval Reagent (1)
Aqueous (2)
Buffer (374)
Buffer, Storage (2)
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Colored pH Buffer (35)

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Search Within Results

1,021 – 1,035 of 43,321 results

1,021

LabChem, Inc. Doctors Solution, Sodium Plumbite, Certified, 3.2 to 3.5N, LabChem™

Pricing & Availability
Specifications

Viscosity	1.8cSt
Linear Formula	PbO
Color	Colorless
Physical Form	Liquid
Traceability to NIST	Traceable to NIST
Chemical Name or Material	Doctors Solution
Identification	Passes Test
Grade	Certified
Concentration	3.2 to 3.5N
Density	1.1g/mL
Name Note	Sodium Plumbite
CAS	1317-36-8
Health Hazard 3	GHS P Statement Obtain special instructions before use. Do not handle until all safety precautions have been read and understood. Do not breathe mist, spray. Wear protective gloves, eye protection, protective clothing, face protection. Wash exposed skin thoroughly after handling. If swallowed: Rinse mouth. Do not induce vomiting. Immediately call a poison center/doctor. If on skin (or hair): Remove immediately all contaminated clothing. Rinse skin with water/shower. Immediately call a poison center/doctor. Wash contaminated clothing before reuse. If inhaled: Remove person to fresh air and keep comfortable for breathing. Immediately call a poison center/doctor. If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a poison center/doctor. Store locked up. Dispose of contents/container to comply with local, state and federal regulations.
Decomposition Information	Fume; Lead oxide; Thermal decomposition generates: Corrosive vapors
Health Hazard 2	GHS H Statement Causes severe skin burns and eye damage. May damage fertility or the unborn child. May cause damage to organs (central nervous system, blood) through prolonged or repeated exposure. Harmful to aquatic life with long lasting effects.
pH	7.0
Packaging	Poly Bottle
Solubility Information	Soluble in water
Health Hazard 1	Danger
Synonym	water,dihydrogen oxide,distilled water,purified water,water vapor,sterile water,water, purified,water, deionized,water, mineral,dihydrogen monoxide
Recommended Storage	Room Temperature
Formula Weight	223.19
Assay Percent Notes	3.1 to 3.3N at pH 11.0
Specific Gravity	1.1g/mL
CAS Max %	2.3

1,022

Ricca Chemical Company Potassium Chloride Conductivity Standard, 300 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

1,023

Thermo Scientific Chemicals CAPS, 99%, for biochemistry

CAS: 1135-40-6 Molecular Formula: C9H19NO3S Molecular Weight (g/mol): 221.32 MDL Number: MFCD00003837 InChI Key: PJWWRFATQTVXHA-UHFFFAOYSA-N Synonym: 3-Cyclohexylamino-1-propanesulfonic acid PubChem CID: 70815 IUPAC Name: 3-(cyclohexylamino)propane-1-sulfonic acid SMILES: OS(=O)(=O)CCCNC1CCCCC1

Pricing & Availability
Specifications

PubChem CID	70815
CAS	1135-40-6
Molecular Weight (g/mol)	221.32
MDL Number	MFCD00003837
SMILES	OS(=O)(=O)CCCNC1CCCCC1
Synonym	3-Cyclohexylamino-1-propanesulfonic acid
IUPAC Name	3-(cyclohexylamino)propane-1-sulfonic acid
InChI Key	PJWWRFATQTVXHA-UHFFFAOYSA-N
Molecular Formula	C9H19NO3S

1,024

Manganese Standard, 1000mg/L in 2% HNO₃ (Assurance Grade), SPEX CertiPrep™

CAS: 7439-96-5 Molecular Formula: Mn Molecular Weight (g/mol): 54.94 MDL Number: MFCD00011111 InChI Key: PWHULOQIROXLJO-UHFFFAOYSA-N PubChem CID: 23930 ChEBI: CHEBI:35154 IUPAC Name: manganese SMILES: [Mn]

Pricing & Availability
Specifications

PubChem CID	23930
CAS	7439-96-5
Molecular Weight (g/mol)	54.94
ChEBI	CHEBI:35154
MDL Number	MFCD00011111
SMILES	[Mn]
IUPAC Name	manganese
InChI Key	PWHULOQIROXLJO-UHFFFAOYSA-N
Molecular Formula	Mn

1,025

TEA, 0.2M buffer soln., pH 8.0, Thermo Scientific Chemicals

CAS: 102-71-6 Molecular Formula: C6H15NO3 Molecular Weight (g/mol): 149.19 MDL Number: MFCD00002855 InChI Key: GSEJCLTVZPLZKY-UHFFFAOYSA-N Synonym: Triethanolamine buffer solution PubChem CID: 7618 ChEBI: CHEBI:28621 IUPAC Name: 2-[bis(2-hydroxyethyl)amino]ethan-1-ol SMILES: OCCN(CCO)CCO

Pricing & Availability
Specifications

PubChem CID	7618
CAS	102-71-6
Molecular Weight (g/mol)	149.19
ChEBI	CHEBI:28621
MDL Number	MFCD00002855
SMILES	OCCN(CCO)CCO
Synonym	Triethanolamine buffer solution
IUPAC Name	2-[bis(2-hydroxyethyl)amino]ethan-1-ol
InChI Key	GSEJCLTVZPLZKY-UHFFFAOYSA-N
Molecular Formula	C6H15NO3

1,026

Phosphate Buffer Solution, pH 7, ASTM for Chlorine, Ricca Chemical

For Chlorine Determination (ASTM Formulation)

Pricing & Availability
Specifications

Color	Colorless
Physical Form	Liquid
CAS Min %	0.34
Chemical Name or Material	Phosphate Buffer Solution
Grade	Laboratory
Concentration	1X
For Use With (Application)	Water Analysis
Sterility	Non-sterile
Name Note	pH 7
CAS	1310-73-2
pH	7
Shelf Life	24 months
Solution Type	Buffer
CAS Max %	0.36

1,027

Ricca Chemical Company EP Reference Solution BY₂, Brownish-Yellow Reference Standard, Ricca Chemical

Pricing & Availability

1,028

Thermo Scientific Chemicals MES-buffered saline (5X), pH 6.5

CAS: 145224-94-8 Molecular Formula: C6H15NO5S Molecular Weight (g/mol): 213.248 MDL Number: MFCD00283848 InChI Key: MIIIXQJBDGSIKL-UHFFFAOYSA-N PubChem CID: 16218417 IUPAC Name: 2-morpholin-4-ylethanesulfonic acid;hydrate SMILES: C1COCCN1CCS(=O)(=O)O.O

Pricing & Availability
Specifications

PubChem CID	16218417
CAS	145224-94-8
Molecular Weight (g/mol)	213.248
MDL Number	MFCD00283848
SMILES	C1COCCN1CCS(=O)(=O)O.O
IUPAC Name	2-morpholin-4-ylethanesulfonic acid;hydrate
InChI Key	MIIIXQJBDGSIKL-UHFFFAOYSA-N
Molecular Formula	C6H15NO5S

1,029

Thermo Scientific™ Phosphate-buffered saline (DPBS, 1X), Dulbecco's formula, low endotoxin

Pricing & Availability
Specifications

Packaging	Plastic bottle
Physical Form	Liquid
Recommended Storage	Ambient temperatures

1,030

Conductivity Standard, 100 μS/cm at 25°C (47.2 ppm TDS as NaCl), Ricca Chemical

Pricing & Availability
Specifications

Boiling Point	100°C
Solubility	Completely miscible
Color	Colorless
Physical Form	Liquid
CAS Min %	0.0046
Chemical Name or Material	Conductivity/TDS Standard
Type	Conductivity Standard
Name Note	100μS/cm (100μmho/cm) at 25°C
Concentration or Composition (by Analyte or Components)	47.2ppm as NaCl
CAS	7732-18-5
pH	6.7 to 7.3
DOT Information	Not Regulated by DOT
Shelf Life	24 months
Solution Type	Conductivity Standard
Melting Point	0°C
CAS Max %	0.0048

1,031

Potassium Chloride, 0.0100 M (M/100), 1412 μS/cm at 25°C, Ricca Chemical

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

1,032

Thermo Scientific Chemicals Borate, 0.5M buffer soln., pH 9.0

CAS: 1330-43-4 Molecular Formula: B4Na2O7 Molecular Weight (g/mol): 201.21 MDL Number: MFCD00081185 InChI Key: NXSVMNYRVBQCMO-UHFFFAOYSA-N IUPAC Name: disodium bicyclo[3.3.1]tetraboroxane-3,7-bis(ylium)-1,5-diuide-1,5-bis(olate) SMILES: [Na+].[Na+].[O-][B-]12O[B+]O[B-]([O-])(O[B+]O1)O2

Pricing & Availability
Specifications

CAS	1330-43-4
Molecular Weight (g/mol)	201.21
MDL Number	MFCD00081185
SMILES	[Na+].[Na+].[O-][B-]12O[B+]O[B-]([O-])(O[B+]O1)O2
IUPAC Name	disodium bicyclo[3.3.1]tetraboroxane-3,7-bis(ylium)-1,5-diuide-1,5-bis(olate)
InChI Key	NXSVMNYRVBQCMO-UHFFFAOYSA-N
Molecular Formula	B4Na2O7

1,033

Potassium chloride, 0.85M, Conductivity Standard

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

Pricing & Availability
Specifications

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

1,034

Manganese standard solution, for AAS, 1 mg/ml Mn in 2 to 5% HNO3

CAS: 7439-96-5 | Mn | 54.94 g/mol

Pricing & Availability
Specifications

Boiling Point	101.0°C
Molecular Weight (g/mol)	54.94
ChEBI	CHEBI:35154
Solubility	Soluble in water
Color	Colorless
Physical Form	Liquid
Chemical Name or Material	Manganese standard solution
Grade	AAS
SMILES	[Mn]
Concentration	997 to 1003 μg/mL of Mn (2+) in 2% HNO3 (20°C)
InChI Key	PWHULOQIROXLJO-UHFFFAOYSA-N
Density	1.0200g/mL
PubChem CID	23930
Name Note	1 mg/ml Mn in 2% HNO3
CAS	7732-18-5
Health Hazard 3	GHS P Statement: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Wear protective gloves/protective clothing/eye protection/face protection. IF ON SKIN: Wash with plenty of soap and water. Avoid breathing dust/fume/gas/mist/vapors/spray. Wash face, hands and any exposed skin thoroughly after handling. Keep only in original container. WARNING: The information provided on this web site was developed in compliance with European Union (EU) regulations and is correct to the best of our knowledge, information and belief at the date of its publication. The information given is designed only as a guide for safe handling and use. It is not to be considered as either a warranty or quality specification.
MDL Number	MFCD00011111
Health Hazard 2	GHS H Statement: Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation. May be corrosive to metals.
Health Hazard 1	GHS Signal Word: Warning
Packaging	Plastic bottle
IUPAC Name	manganese
Molecular Formula	Mn
Formula Weight	54.94
Melting Point	-3.0°C
Specific Gravity	1.02

1,035

Thermo Scientific Chemicals Sodium phosphate, 0.5M buffer soln., pH 7.6

Pricing & Availability
Specifications

MDL Number	MFCD00146206
Physical Form	Liquid
pH	7.6
Chemical Name or Material	Sodium phosphate buffer soln.
TSCA	Yes
Recommended Storage	Ambient temperatures
Concentration	0.5 M

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Buffers and Standards

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Manganese Standard, 1000mg/L in 2% HNO3 (Assurance Grade), SPEX CertiPrep™ Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Conductivity Standard, 100 μS/cm at 25°C (47.2 ppm TDS as NaCl), Ricca Chemical SureTRACESupports traceability with guaranteed access to certificates and proactive change notifications.Learn More

Manganese Standard, 1000mg/L in 2% HNO₃ (Assurance Grade), SPEX CertiPrep™

Conductivity Standard, 100 μS/cm at 25°C (47.2 ppm TDS as NaCl), Ricca Chemical