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 (24,310)

Spectroscopy Standards (5,752)

General Chemistry Solutions (5,095)

Matrix Blanks and Standardization Solutions (4,313)

Life Science Buffers (4,205)

Electrochemistry Buffers (2,364)

Environmental Testing Standards (1,894)

Electrochemistry Standards (1,249)

Karl Fischer Buffers and Reagents (467)

Isotope Standards (380)

Viscosity Standards (258)

Quality Control and Proficiency Samples (184)

Kjeldahl Buffers and Reagents (90)

Gel Filtration Standards (59)

Matrix Modifiers (29)

Osmolality Standards (12)

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

≥ 4400 Units/mg (Nystatin) ≥ 5000 Units/mg (Nystatin) (1) (8)
≥ 85.0 % (1)
≥14% (BF3) (1)
≥30% (RT) (1)
≥30% (titration) (1)
≥35% (RT) (1)
≥40% (3)

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pH

≥12 to ≤14 (6)
>11.5 (1)
>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 (373)
Buffer, Storage (2)
Calibration (8)
Cleaning (1)
Colored pH Buffer (35)

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Search Within Results

151 – 165 of 45,030 results

151

Iodine Solution, Wijs, Fisher Chemical™

CAS: 7553-56-2 Molecular Formula: I2 Molecular Weight (g/mol): 253.81 MDL Number: MFCD00011355 MFCD00164163 InChI Key: PNDPGZBMCMUPRI-UHFFFAOYSA-N Synonym: iodine,diiodine,iodine crystals,iodine sublimed,tincture iodine,vistarin,eranol,iodio,iodine solution,iode PubChem CID: 807 ChEBI: CHEBI:17606 IUPAC Name: diiodine SMILES: II

Pricing & Availability
Specifications

PubChem CID	807
CAS	7553-56-2
Molecular Weight (g/mol)	253.81
ChEBI	CHEBI:17606
MDL Number	MFCD00011355 MFCD00164163
SMILES	II
Synonym	iodine,diiodine,iodine crystals,iodine sublimed,tincture iodine,vistarin,eranol,iodio,iodine solution,iode
IUPAC Name	diiodine
InChI Key	PNDPGZBMCMUPRI-UHFFFAOYSA-N
Molecular Formula	I2

152

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TE Buffer, Tris-EDTA, 100X Solution, pH 8.0, Molecular Biology, Fisher BioReagents™

Pricing & Availability
Specifications

Name Note	100X Solution
CAS	7732-18-5
Protease	Protease free
Health Hazard 3	Emergency Overview Irritating to eyes and skin. Wear personal protective equipment. Ensure adequate ventilation. Avoid contact with skin, eyes and clothing. Avoid ingestion and inhalation. 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. Get medical attention immediately if symptoms occur. Do not induce vomiting. NFPA Health:2 Flammability:0 Instability:0
Health Hazard 2	WARNING!
Color	Undesignated
Physical Form	Liquid
Chemical Name or Material	Tris-EDTA
Grade	Molecular Biology
DNase	DNase free
Recommended Storage	RT
Filtered Through	Filtered through a 0.2-micron filter.
ChemAlert Storage Symbol	Gray

153

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HEPES Sodium Salt (White Powder), Fisher BioReagents

CAS: 75277-39-3 Molecular Formula: C8H17N2NaO4S Molecular Weight (g/mol): 260.28 MDL Number: MFCD00036463 InChI Key: RDZTWEVXRGYCFV-UHFFFAOYSA-M PubChem CID: 2724248 ChEBI: CHEBI:46758 IUPAC Name: sodium 2-[4-(2-hydroxyethyl)piperazin-1-yl]ethane-1-sulfonate SMILES: [Na+].OCCN1CCN(CCS([O-])(=O)=O)CC1

Pricing & Availability
Specifications

PubChem CID	2724248
CAS	75277-39-3
Molecular Weight (g/mol)	260.28
ChEBI	CHEBI:46758
MDL Number	MFCD00036463
SMILES	[Na+].OCCN1CCN(CCS([O-])(=O)=O)CC1
IUPAC Name	sodium 2-[4-(2-hydroxyethyl)piperazin-1-yl]ethane-1-sulfonate
InChI Key	RDZTWEVXRGYCFV-UHFFFAOYSA-M
Molecular Formula	C8H17N2NaO4S

154

Phenol/Chloroform/Isoamyl Alcohol (25:24:1 Mixture, pH 6.7/8.0, Liq.), Fisher BioReagents™

CAS: 108-95-2 Molecular Formula: C6H6O Molecular Weight (g/mol): 94.11 MDL Number: MFCD00002143 InChI Key: ISWSIDIOOBJBQZ-UHFFFAOYSA-N Synonym: carbolic acid,hydroxybenzene,phenic acid,phenylic acid,oxybenzene,benzenol,phenyl hydrate,monophenol,phenyl hydroxide,phenylic alcohol PubChem CID: 996 ChEBI: CHEBI:15882 IUPAC Name: phenol SMILES: OC1=CC=CC=C1

Pricing & Availability
Specifications

PubChem CID	996
CAS	108-95-2
Molecular Weight (g/mol)	94.11
ChEBI	CHEBI:15882
MDL Number	MFCD00002143
SMILES	OC1=CC=CC=C1
Synonym	carbolic acid,hydroxybenzene,phenic acid,phenylic acid,oxybenzene,benzenol,phenyl hydrate,monophenol,phenyl hydroxide,phenylic alcohol
IUPAC Name	phenol
InChI Key	ISWSIDIOOBJBQZ-UHFFFAOYSA-N
Molecular Formula	C6H6O

155

Traceable™ One-Shot™ pH Buffer Standards pH Certified Reference Material (CRM), Fisherbrand™

Performs accurate, reproducible pH calibrations with color-coded bottles. Traceable™ Color-Coded buffers are Certified Reference Material pH Buffers. Compatible with all makes of pH instruments and electrodes.

Pricing & Availability
Specifications

For Use With (Equipment)	pH Meter and Electrode
Traceability to NIST	Certified and Traceable™
Physical Form	Liquid
Quantity	6 x 100 mL
For Use With (Application)	Calibration
Solution Type	Buffer

156

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Buffer Solution, pH 4.00 (Certified), Fisher Chemical™

Pricing & Availability
Specifications

CAS	67-56-1
Health Hazard 3	Emergency Overview Contains a known or suspected carcinogen. 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. 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. Do not induce vomiting. Obtain medical attention. NFPA Health:1 Flammability:0 Instability:0
MDL Number	MFCD00146206
Health Hazard 2	CAUTION!
Color	Undesignated
Traceability to NIST	Traceable to NIST.
Physical Form	Liquid
pH	4.0
Chemical Name or Material	Buffer Solution, pH 4.00
Grade	Certified
Identification	Pass Test
ChemAlert Storage Symbol	Gray
Density	1.0054g/cm³

157

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

158

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Buffer Solution, pH 3.00 (Certified), Fisher Chemical™

Pricing & Availability
Specifications

Boiling Point	100°C
Color	Undesignated
Traceability to NIST	Traceable to NIST.
Physical Form	Liquid
Chemical Name or Material	Buffer Solution, pH 3.00
Grade	Certified
Identification	Pass Test
ChemAlert Storage Symbol	Gray
Density	0.7g/cm³
CAS	7732-18-5
Health Hazard 3	Emergency Overview May cause eye, skin, and respiratory tract irritation. 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. 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. Do not induce vomiting. Obtain medical attention. NFPA Health:1 Flammability:0 Instability:0
MDL Number	MFCD00146206
Health Hazard 2	CAUTION!
pH	3.00
Melting Point	0°C

159

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Buffer Solution, pH 7.40 (Certified), Fisher Chemical™

Potassium Phosphate Monobasic/Sodium Hydroxide

Pricing & Availability
Specifications

Boiling Point	100°C
CAS	7732-18-5
MDL Number	MFCD00134130
Traceability to NIST	Traceable to NIST.
Packaging	Poly Bottle
Physical Form	Liquid
pH	7.4
Chemical Name or Material	Buffer Solution, pH 7.40
Grade	Certified
Identification	Pass Test
ChemAlert Storage Symbol	Gray
Density	1.0g/cm³
Melting Point	0°C

160

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Silver Nitrate Solution (0.1N (N/10)/Certified), Fisher Chemical™

CAS: 7761-88-8 Molecular Formula: AgNO3 Molecular Weight (g/mol): 169.87 MDL Number: MFCD00003414 InChI Key: SQGYOTSLMSWVJD-UHFFFAOYSA-N Synonym: silver nitrate,silvernitrate,lunar caustic,silbernitrat,argenti nitras,nitrate d'argent,nitric acid silver i salt,silver mononitrate,silver i nitrate,argerol PubChem CID: 24470 ChEBI: CHEBI:32130 IUPAC Name: silver(1+) nitrate SMILES: [Ag+].[O-][N+]([O-])=O

Pricing & Availability
Specifications

PubChem CID	24470
CAS	7761-88-8
Molecular Weight (g/mol)	169.87
ChEBI	CHEBI:32130
MDL Number	MFCD00003414
SMILES	[Ag+].[O-][N+]([O-])=O
Synonym	silver nitrate,silvernitrate,lunar caustic,silbernitrat,argenti nitras,nitrate d'argent,nitric acid silver i salt,silver mononitrate,silver i nitrate,argerol
IUPAC Name	silver(1+) nitrate
InChI Key	SQGYOTSLMSWVJD-UHFFFAOYSA-N
Molecular Formula	AgNO3

161

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Buffer Solution, pH 4.63 (Certified), Fisher Chemical

Pricing & Availability

162

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Bis-Tris, Fisher BioReagents

CAS: 6976-37-0 Molecular Formula: C8H19NO5 Molecular Weight (g/mol): 209.242 InChI Key: OWMVSZAMULFTJU-UHFFFAOYSA-N Synonym: 2,2-Bis(hydroxymethyl)-2,2?,2?-nitrilotriethanol,2, 2-Bis(hydroxymethyl)-2, 2?,Bis(2-hydroxyethyl)amino-tris(hydroxymethyl)methane PubChem CID: 81462 ChEBI: CHEBI:41250 IUPAC Name: 2-[bis(2-hydroxyethyl)amino]-2-(hydroxymethyl)propane-1,3-diol SMILES: C(CO)N(CCO)C(CO)(CO)CO

Pricing & Availability
Specifications

PubChem CID	81462
CAS	6976-37-0
Molecular Weight (g/mol)	209.242
ChEBI	CHEBI:41250
SMILES	C(CO)N(CCO)C(CO)(CO)CO
Synonym	2,2-Bis(hydroxymethyl)-2,2?,2?-nitrilotriethanol,2, 2-Bis(hydroxymethyl)-2, 2?,Bis(2-hydroxyethyl)amino-tris(hydroxymethyl)methane
IUPAC Name	2-[bis(2-hydroxyethyl)amino]-2-(hydroxymethyl)propane-1,3-diol
InChI Key	OWMVSZAMULFTJU-UHFFFAOYSA-N
Molecular Formula	C8H19NO5

163

accumet™ pH 4.01 (Red) Buffer, Fisherbrand™

Pricing & Availability
Specifications

Description	pH 4.01 (Red) Buffer
Traceability to NIST	Yes
pH	4.01
Solution Type	Buffer

164

accumet™ pH 1.68 Buffer, Fisherbrand™

Pricing & Availability

165

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Buffer Solution, pH 9.00 (Certified), Fisher Chemical™

Boric Acid/Potassium Chloride/Sodium Hydroxide

Pricing & Availability
Specifications

Boiling Point	100°C
CAS	7732-18-5
Health Hazard 3	Emergency Overview May cause eye, skin, and respiratory tract irritation. Use personal protective equipment. Ensure adequate ventilation. 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!
Traceability to NIST	Traceable to NIST.
Physical Form	Liquid
pH	9.00
Chemical Name or Material	Buffer Solution, pH 9.00
Grade	Certified
Identification	Pass Test
ChemAlert Storage Symbol	Gray
Melting Point	0°C

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Buffers and Standards

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Phenol/Chloroform/Isoamyl Alcohol (25:24:1 Mixture, pH 6.7/8.0, Liq.), Fisher BioReagents™ GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

Buffer Solution, pH 4.00 (Certified), Fisher Chemical™ GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

Buffer Solution, pH 3.00 (Certified), Fisher Chemical™ GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

Buffer Solution, pH 7.40 (Certified), Fisher Chemical™ GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

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

Bis-Tris, Fisher BioReagents GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

Buffer Solution, pH 9.00 (Certified), Fisher Chemical™ GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

Phenol/Chloroform/Isoamyl Alcohol (25:24:1 Mixture, pH 6.7/8.0, Liq.), Fisher BioReagents™

Buffer Solution, pH 4.00 (Certified), Fisher Chemical™

Buffer Solution, pH 3.00 (Certified), Fisher Chemical™

Buffer Solution, pH 7.40 (Certified), Fisher Chemical™

Silver Nitrate Solution (0.1N (N/10)/Certified), Fisher Chemical™

Bis-Tris, Fisher BioReagents

Buffer Solution, pH 9.00 (Certified), Fisher Chemical™