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)

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Kjeldahl Buffers and Reagents (90)

Gel Filtration Standards (59)

Matrix Modifiers (29)

Osmolality Standards (13)

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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)
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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)
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Technique

AA (469)
Acidimetry (3)
Calibrating the absorbance of spectrophotometers (1)
Calibration (7)
Calibration and Matrix Spikes (1)
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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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706 – 720 of 43,318 results

706

Potassium bromate/Potassium bromide, 0.1N Standardized Solution

Molecular Formula: KBrO₃/KBr MDL Number: MFCD00011359

Pricing & Availability
Specifications

MDL Number	MFCD00011359
Molecular Formula	KBrO₃/KBr

707

LabChem, Inc. Buffer Solution pH 1.0 at 25°C, Certified, LabChem™

Pricing & Availability
Specifications

Linear Formula	KCl
Color	Colorless
Traceability to NIST	Traceable to NIST
Physical Form	Liquid
UN Number	UN1789
Chemical Name or Material	Buffer Solution pH 1.0 at 25°C
Grade	Certified
Identification	Passes Test
Density	1g/mL
CAS	7647-01-0
Decomposition Information	Chlorine; Thermal decomposition generates: Corrosive vapors
Health Hazard 2	GHS H Statement Causes severe skin burns and eye damage.
Solubility Information	Soluble in water
Packaging	Poly Bottle
pH	1.00 ±0.02
Health Hazard 1	Danger
Recommended Storage	Room Temperature
Formula Weight	74.55
Specific Gravity	1g/mL
CAS Max %	0.05

708

Diisobutylaluminium hydride, 1.0M solution in heptane, AcroSeal™

CAS: 1191-15-7 | C₈H₁₉Al

Pricing & Availability
Specifications

Linear Formula	[(CH₃)₂CHCH₂]₂AIH
Color	Undesignated
Physical Form	Solution
Chemical Name or Material	Diisobutylaluminium hydride
Merck Index	15, 3212
Concentration	19.5 to 20.5% (DIBAL-H, on Al basis)
Density	0.7000g/mL
Name Note	1.0M Solution in Heptane
Fieser	01,260; 02,140; 03,101; 04,158; 05,224; 06,198; 07,111; 08,173; 09,171; 10,149; 11,185; 12,191; 13,115; 14,138; 15,137; 16,27; 17,123
CAS	142-82-5
Health Hazard 3	GHS P Statement: IF SWALLOWED: rinse mouth. Do NOT induce vomiting. Wear eye protection/face protection. 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 or doctor/physician. Avoid breathing dust/fume/gas/mist/vapors/spray. IF SWALLOWED: Immediately call a POISON CENTRE or doctor/physician. Do NOT induce vomiting. Avoid release to the environment. Store in a dry place. Store in a closed 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	MFCD00008928
Health Hazard 2	GHS H Statement: Causes severe skin burns and eye damage. May be fatal if swallowed and enters airways. May cause drowsiness or dizziness. Very toxic to aquatic life with long lasting effects. In contact with water releases flammable gases which may ignite spontaneously.
Flash Point	−1°C
Solubility Information	Solubility in water: vigorous reaction. Other solubilities: miscible with saturated aliphatic and aromatic, hydrocarbons
Health Hazard 1	Danger
Synonym	DIBAL-H, 1.0M solution in heptane
Beilstein	04, IV, 4400
Molecular Formula	C₈H₁₉Al
Formula Weight	142.22
Specific Gravity	0.7
Melting Point	-70.0°C

709

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
Physical Form	Liquid
Certificate of Analysis	Yes
Grade	Certified
For Use With (Application)	Calibration
Solution Type	pH Buffer
Product Line	VeriSpec

710

Corning™ HEPES, Powder

An alternative to bicarbonate for buffering

Pricing & Availability
Specifications

Packaging	Plastic Bottle
Physical Form	Powder
Recommended Storage	15° to 30°C
Sterility	Sterile

711

Ricca Chemical Company Cobalt AA Standard, 1000 ppm Co in 3% HNO₃, Ricca Chemical

CAS: 7440-48-4 Molecular Formula: Co Molecular Weight (g/mol): 58.93 MDL Number: MFCD00010935 InChI Key: GUTLYIVDDKVIGB-UHFFFAOYSA-N PubChem CID: 104730 ChEBI: CHEBI:27638 IUPAC Name: cobalt SMILES: [Co]

Pricing & Availability
Specifications

PubChem CID	104730
CAS	7440-48-4
Molecular Weight (g/mol)	58.93
ChEBI	CHEBI:27638
MDL Number	MFCD00010935
SMILES	[Co]
IUPAC Name	cobalt
InChI Key	GUTLYIVDDKVIGB-UHFFFAOYSA-N
Molecular Formula	Co

712

Thermo Scientific Chemicals TRIS, 1.0M buffer soln., pH 9.0, 0.2 micron filtered

CAS: 77-86-1 Molecular Formula: C4H11NO3 Molecular Weight (g/mol): 121.136 MDL Number: MFCD00004679 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	MFCD00004679
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

713

Atrazine, 95+%

CAS: 1912-24-9 Molecular Formula: C8H14ClN5 Molecular Weight (g/mol): 215.69 MDL Number: MFCD00041810 InChI Key: MXWJVTOOROXGIU-UHFFFAOYSA-N IUPAC Name: 6-chloro-N2-ethyl-N4-(propan-2-yl)-1,3,5-triazine-2,4-diamine SMILES: CCNC1=NC(Cl)=NC(NC(C)C)=N1

Pricing & Availability
Specifications

CAS	1912-24-9
Molecular Weight (g/mol)	215.69
MDL Number	MFCD00041810
SMILES	CCNC1=NC(Cl)=NC(NC(C)C)=N1
IUPAC Name	6-chloro-N2-ethyl-N4-(propan-2-yl)-1,3,5-triazine-2,4-diamine
InChI Key	MXWJVTOOROXGIU-UHFFFAOYSA-N
Molecular Formula	C8H14ClN5

714

Thermo Scientific Chemicals Tricine, 0.5M buffer soln., pH 8.0

CAS: 4-1-5704 Molecular Formula: C6H13NO5 Molecular Weight (g/mol): 179.17 MDL Number: MFCD00004277 InChI Key: SEQKRHFRPICQDD-UHFFFAOYSA-N PubChem CID: 79784 ChEBI: CHEBI:39063 IUPAC Name: 2-[[1,3-dihydroxy-2-(hydroxymethyl)propan-2-yl]amino]acetic acid SMILES: C(C(=O)O)NC(CO)(CO)CO

Pricing & Availability
Specifications

PubChem CID	79784
CAS	4-1-5704
Molecular Weight (g/mol)	179.17
ChEBI	CHEBI:39063
MDL Number	MFCD00004277
SMILES	C(C(=O)O)NC(CO)(CO)CO
IUPAC Name	2-[[1,3-dihydroxy-2-(hydroxymethyl)propan-2-yl]amino]acetic acid
InChI Key	SEQKRHFRPICQDD-UHFFFAOYSA-N
Molecular Formula	C6H13NO5

715

pH 6 Buffer Standard, SPEX CertiPrep™

ISO/IEC Guide 34 Certified, NIST-Traceable Certified Reference Material

Pricing & Availability
Specifications

Chemical Name or Material	pH 6 Buffer Standard

716

3M KCl AgCl Electrolyte Solution, METTLER TOLEDO™

Maintenance and pH Electrolyte Solution

Pricing & Availability

717

Benzylmagnesium chloride, 1.5M solution in THF, Thermo Scientific Chemicals

CAS: 6921-34-2 Molecular Formula: C7H7ClMg Molecular Weight (g/mol): 150.89 MDL Number: MFCD00000469 InChI Key: NRAFPLGJPPJUNB-UHFFFAOYSA-M Synonym: benzylmagnesium chloride,magnesium, chloro phenylmethyl,phch2mgcl,benzyl chloro magnesium,benzyl magnesium chloride,chloro phenylmethyl magnesium,benzylmagnesiumchloride,bnmgcl,benzyl-magnesium chloride,chloro phenylmethyl-magnesium PubChem CID: 2733352 IUPAC Name: benzyl(chloro)magnesium SMILES: Cl[Mg]CC1=CC=CC=C1

Pricing & Availability
Specifications

PubChem CID	2733352
CAS	6921-34-2
Molecular Weight (g/mol)	150.89
MDL Number	MFCD00000469
SMILES	Cl[Mg]CC1=CC=CC=C1
Synonym	benzylmagnesium chloride,magnesium, chloro phenylmethyl,phch2mgcl,benzyl chloro magnesium,benzyl magnesium chloride,chloro phenylmethyl magnesium,benzylmagnesiumchloride,bnmgcl,benzyl-magnesium chloride,chloro phenylmethyl-magnesium
IUPAC Name	benzyl(chloro)magnesium
InChI Key	NRAFPLGJPPJUNB-UHFFFAOYSA-M
Molecular Formula	C7H7ClMg

718

TAE 50X BUFFER, MP Biomedicals™

MDL Number: MFCD00236357 Synonym: Tris-Borate-EDTA Buffer

Pricing & Availability
Specifications

MDL Number	MFCD00236357
Synonym	Tris-Borate-EDTA Buffer

719

Sodium bicarbonate, 1M buffer soln., pH 8.0, Thermo Scientific Chemicals

CAS: 144-55-8 Molecular Formula: CHNaO3 Molecular Weight (g/mol): 84.01 MDL Number: MFCD00003528 InChI Key: UIIMBOGNXHQVGW-UHFFFAOYSA-M PubChem CID: 516892 ChEBI: CHEBI:32139 SMILES: [Na+].OC([O-])=O

Pricing & Availability
Specifications

PubChem CID	516892
CAS	144-55-8
Molecular Weight (g/mol)	84.01
ChEBI	CHEBI:32139
MDL Number	MFCD00003528
SMILES	[Na+].OC([O-])=O
InChI Key	UIIMBOGNXHQVGW-UHFFFAOYSA-M
Molecular Formula	CHNaO3

720

Buffer solution pH 4.00 (+/-0.022 @ 25oC) Colored Red Specpure NIST Traceable

CAS: 1310-73-2

Pricing & Availability
Specifications

Concentration or Composition (by Analyte or Components)	Sodium hydroxide: 0.7%; Potassium dihydrogen phosphate: 0.7%; water: 98.6%
CAS	7732-18-5
MDL Number	MFCD00146206
Color	Red
Solubility Information	Miscible with water.
Physical Form	Liquid
Chemical Name or Material	Buffer solution
TSCA	Yes
Recommended Storage	Ambient temperatures
Vapor Pressure	23 hPa (17mm Hg) at 20°C

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Buffers and Standards

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LabChem, Inc. Buffer Solution pH 1.0 at 25°C, Certified, LabChem™ GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

Corning™ HEPES, Powder Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

pH 6 Buffer Standard, SPEX CertiPrep™ Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

LabChem, Inc. Buffer Solution pH 1.0 at 25°C, Certified, LabChem™

Corning™ HEPES, Powder

pH 6 Buffer Standard, SPEX CertiPrep™