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 (22,754)

Spectroscopy Standards (5,983)

General Chemistry Solutions (5,246)

Matrix Blanks and Standardization Solutions (4,367)

Life Science Buffers (3,916)

Electrochemistry Buffers (2,316)

Environmental Testing Standards (1,935)

Electrochemistry Standards (1,221)

Karl Fischer Buffers and Reagents (478)

Isotope Standards (300)

Viscosity Standards (257)

Quality Control and Proficiency Samples (205)

Kjeldahl Buffers and Reagents (108)

Gel Filtration Standards (60)

Matrix Modifiers (29)

Osmolality Standards (12)

Smoke Point Reference (9)

Polarimetric Standards (4)

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Grade

AAS (56)
AAS Standard (11)
ACS (59)
ACS Reagent (26)
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 Box (1)
1 Ea. (4)

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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 (1)
>11.5 (3)
>12 (44)
>13 (104)
>8 (1)
<0.5 (3)

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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 (26)
Capsule (11)
Chemvelope (1)
Clear Liquid (1)
Clear Liquid at 20°C (2)
Crystalline (17)
Crystalline Powder (143)

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Technique

AA (472)
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 (433)
Buffer, Storage (2)
Calibration (8)
Cleaning (1)
Colored pH Buffer (35)

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91 – 105 of 43,630 results

CAS	7446-20-0
Packaging	Natural Poly Bottle
CAS Min %	6.59
Chemical Name or Material	Carrez II Solution
Grade	Laboratory
ChemAlert Storage Symbol	Gray
Methods	For AOAC Method 984.15
CAS Max %	6.85

Thermo Scientific accumet™ pH 6.86 Buffer, Fisherbrand™

Pricing & Availability

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

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

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

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

Traceable™ ISO 17034 (formerly ISO Guide 34) Color-Coded CRM pH Buffers (Certified Reference Material), Fisherbrand™

Performs accurate, reproducible pH calibrations with color-coded bottles. Fisherbrand™ 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 Instruments and Electrodes
Physical Form	Liquid
Quantity	473 mL
For Use With (Application)	Calibration
Solution Type	Buffer

Ethidium Bromide (1% Solution/Molecular Biology), Fisher BioReagents

CAS: 1239-45-8 | C21H20BrN3 | 394.32 g/mol

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Promotions Available

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

100

Promotions Available

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

101

Phosphate Buffered Saline (PBS), 10X Powder, pH 7.4, Fisher BioReagents™

Phosphate Buffered Saline (PBS), 10X Powder provides a convenient way to make 1 L of 10X stock PBS solution.

Pricing & Availability

102

Promotions Available

Buffer Solution, pH 6.00 (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 6.00
Grade	Certified
Identification	Pass Test
ChemAlert Storage Symbol	Gray
CAS	1310-73-2
Health Hazard 3	Emergency Overview May cause eye, skin, and respiratory tract irritation. Handle in accordance with good industrial hygiene and safety practice. 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. . . NFPA Health:1 Flammability:0 Instability:0
MDL Number	MFCD00134130
Health Hazard 2	CAUTION!
pH	6.00
Melting Point	0°C

103

Fisher Scientific accumet™ Ammonia Standard, 1000ppm, Fisherbrand™

Pricing & Availability

104

Promotions Available

Tris Hydrochloride (Small White Flakes/Molecular Biology), Fisher BioReagents

CAS: 1185-53-1 Molecular Formula: C4H12ClNO3 Molecular Weight (g/mol): 157.594 InChI Key: QKNYBSVHEMOAJP-UHFFFAOYSA-N Synonym: Tris(hydroxymethyl)aminomethane Hydrochloride PubChem CID: 93573 IUPAC Name: 2-amino-2-(hydroxymethyl)propane-1,3-diol;hydrochloride SMILES: C(C(CO)(CO)N)O.Cl

Pricing & Availability
Specifications

PubChem CID	93573
CAS	1185-53-1
Molecular Weight (g/mol)	157.594
SMILES	C(C(CO)(CO)N)O.Cl
Synonym	Tris(hydroxymethyl)aminomethane Hydrochloride
IUPAC Name	2-amino-2-(hydroxymethyl)propane-1,3-diol;hydrochloride
InChI Key	QKNYBSVHEMOAJP-UHFFFAOYSA-N
Molecular Formula	C4H12ClNO3

105

Fisher Scientific TAN Standard (Certified), Fisher Chemical

CAS: 79-09-4 Molecular Formula: C3H6O2 Molecular Weight (g/mol): 74.079 MDL Number: MFCD00212734 InChI Key: XBDQKXXYIPTUBI-UHFFFAOYSA-N PubChem CID: 1032 ChEBI: CHEBI:30768 IUPAC Name: propanoic acid SMILES: CCC(=O)O

Pricing & Availability
Specifications

PubChem CID	1032
CAS	79-09-4
Molecular Weight (g/mol)	74.079
ChEBI	CHEBI:30768
MDL Number	MFCD00212734
SMILES	CCC(=O)O
IUPAC Name	propanoic acid
InChI Key	XBDQKXXYIPTUBI-UHFFFAOYSA-N
Molecular Formula	C3H6O2

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Buffers and Standards

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Carrez II Solution, Fisher Chemical™ Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Thermo Scientific accumet™ pH 6.86 Buffer, Fisherbrand™ Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

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

accumet™ pH 7.00 (Yellow) Buffer, Fisherbrand™ Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

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

Ethidium Bromide (1% Solution/Molecular Biology), Fisher BioReagents 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

Phosphate Buffered Saline (PBS), 10X Powder, pH 7.4, Fisher BioReagents™ GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

Buffer Solution, pH 6.00 (Certified), Fisher Chemical™ GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

Fisher Scientific accumet™ Ammonia Standard, 1000ppm, Fisherbrand™ Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Carrez II Solution, Fisher Chemical™

Thermo Scientific accumet™ pH 6.86 Buffer, Fisherbrand™

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

accumet™ pH 7.00 (Yellow) Buffer, Fisherbrand™

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

Ethidium Bromide (1% Solution/Molecular Biology), Fisher BioReagents

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

Phosphate Buffered Saline (PBS), 10X Powder, pH 7.4, Fisher BioReagents™

Buffer Solution, pH 6.00 (Certified), Fisher Chemical™

Fisher Scientific accumet™ Ammonia Standard, 1000ppm, Fisherbrand™