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 (19,404)

Spectroscopy Standards (6,124)

General Chemistry Solutions (5,096)

Matrix Blanks and Standardization Solutions (4,148)

Life Science Buffers (3,685)

Electrochemistry Buffers (2,288)

Environmental Testing Standards (1,866)

Electrochemistry Standards (1,168)

Karl Fischer Buffers and Reagents (560)

Viscosity Standards (234)

Isotope Standards (186)

Quality Control and Proficiency Samples (181)

Kjeldahl Buffers and Reagents (100)

Gel Filtration Standards (60)

Matrix Modifiers (31)

Osmolality Standards (10)

Polarimetric Standards (3)

Smoke Point Reference (3)

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Grade

AAS (56)
AAS Standard (11)
ACS (60)
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

≥10% (1)
≥14% (BF3) (1)
≥30% (RT) (1)
≥30% (titration) (1)
≥35% (RT) (1)
≥39% (1)
≥40% (3)

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pH

≥12 to ≤14 (6)
>11 (1)
>11.5 (3)
>12 (43)
>13 (104)
>8 (1)
<1 (124)

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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 (147)

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Technique

AA (474)
AA, ICP (2)
Acidimetry (3)
Calibrating the absorbance of spectrophotometers (1)
Calibration (7)
Calibration and Matrix Spikes (1)
Calibration and Verification (16)

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Solution Type

Antigen Retrieval Reagent (1)
Aqueous (2)
Buffer (405)
Buffer, Storage (2)
Calibration (8)
Cleaning (1)
Colored pH Buffer (35)

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106 – 120 of 39,547 results

106

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Buffer Concentrate, pH 10.00 (Certified), Fisher Chemical

Pricing & Availability

107

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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

108

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Hydrogen Peroxide, Fisher Chemical™

CAS: 7722-84-1 Molecular Formula: H2O2 Molecular Weight (g/mol): 34.014 MDL Number: MFCD00011333 InChI Key: MHAJPDPJQMAIIY-UHFFFAOYSA-N Synonym: oxydol,perhydrol,superoxol,interox,hydrogen dioxide,inhibine,peroxaan,albone,hioxyl,kastone PubChem CID: 784 ChEBI: CHEBI:16240 IUPAC Name: hydrogen peroxide SMILES: OO

Pricing & Availability
Specifications

PubChem CID	784
CAS	7722-84-1
Molecular Weight (g/mol)	34.014
ChEBI	CHEBI:16240
MDL Number	MFCD00011333
SMILES	OO
Synonym	oxydol,perhydrol,superoxol,interox,hydrogen dioxide,inhibine,peroxaan,albone,hioxyl,kastone
IUPAC Name	hydrogen peroxide
InChI Key	MHAJPDPJQMAIIY-UHFFFAOYSA-N
Molecular Formula	H2O2

109

Hydrogen Peroxide, 30% (Certified ACS), Thermo Scientific™

CAS: 7732-18-5,7722-84-1 Molecular Formula: H2O2 Molecular Weight (g/mol): 34.014 MDL Number: MFCD00011333 InChI Key: MHAJPDPJQMAIIY-UHFFFAOYSA-N Synonym: oxydol,perhydrol,superoxol,interox,hydrogen dioxide,inhibine,peroxaan,albone,hioxyl,kastone PubChem CID: 784 ChEBI: CHEBI:16240 IUPAC Name: hydrogen peroxide SMILES: OO

Pricing & Availability
Specifications

PubChem CID	784
CAS	7732-18-5,7722-84-1
Molecular Weight (g/mol)	34.014
ChEBI	CHEBI:16240
MDL Number	MFCD00011333
SMILES	OO
Synonym	oxydol,perhydrol,superoxol,interox,hydrogen dioxide,inhibine,peroxaan,albone,hioxyl,kastone
IUPAC Name	hydrogen peroxide
InChI Key	MHAJPDPJQMAIIY-UHFFFAOYSA-N
Molecular Formula	H2O2

110

Tris Hydrochloride, 1M Solution (pH 8.0/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

111

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

112

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

113

Karl Fischer Aqualine™ Titrant 5, for Karl Fischer Titration By Volumetry, Fisher Chemical

For two-component system. Water equivalent: 5.0mg H₂O/mL

Pricing & Availability

114

Karl Fischer Aqualine™ Sodium Tartrate-2H2O, for Karl Fischer Titration, Fisher Chemical

Molecular Formula: C4H8Na2O8 Molecular Weight (g/mol): 230.08 MDL Number: MFCD00150035 InChI Key: FGJLAJMGHXGFDE-UDMGOBQRNA-L PubChem CID: 131855972 IUPAC Name: (2R,3R)-2,3-dihydroxybutanedioic acid;sodium;dihydrate SMILES: O.O.[Na+].[Na+].O[C@H]([C@@H](O)C([O-])=O)C([O-])=O

Pricing & Availability
Specifications

PubChem CID	131855972
Molecular Weight (g/mol)	230.08
MDL Number	MFCD00150035
SMILES	O.O.[Na+].[Na+].O[C@H]([C@@H](O)C([O-])=O)C([O-])=O
IUPAC Name	(2R,3R)-2,3-dihydroxybutanedioic acid;sodium;dihydrate
InChI Key	FGJLAJMGHXGFDE-UDMGOBQRNA-L
Molecular Formula	C4H8Na2O8

115

Karl Fischer Aqualine™ Matrix K, for Karl Fischer Titration By Volumetry, Fisher Chemical™

Pricing & Availability
Specifications

MDL Number	81734
Color	Colorless
Packaging	Amber glass bottle
Physical Form	Liquid

116

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Sodium Thiosulfate Pentahydrate Solution (0.1N (N/10)/Certified), Fisher Chemical™

CAS: 10102-17-7 Molecular Formula: H10Na2O8S2 Molecular Weight (g/mol): 248.172 MDL Number: MFCD00003499 InChI Key: PODWXQQNRWNDGD-UHFFFAOYSA-L Synonym: sodium thiosulfate pentahydrate,ametox,sodium thiosulfate, pentahydrate,antichlor,tinver,disodium thiosulfate pentahydrate,unii-hx1032v43m,ccris 3952,thiosulfuric acid, disodium salt, pentahydrate,sodium hyposulfite pentahydrate PubChem CID: 61475 ChEBI: CHEBI:32150 IUPAC Name: disodium;dioxido-oxo-sulfanylidene-$l^{6}-sulfane;pentahydrate SMILES: O.O.O.O.O.[O-]S(=O)(=S)[O-].[Na+].[Na+]

Pricing & Availability
Specifications

PubChem CID	61475
CAS	10102-17-7
Molecular Weight (g/mol)	248.172
ChEBI	CHEBI:32150
MDL Number	MFCD00003499
SMILES	O.O.O.O.O.[O-]S(=O)(=S)[O-].[Na+].[Na+]
Synonym	sodium thiosulfate pentahydrate,ametox,sodium thiosulfate, pentahydrate,antichlor,tinver,disodium thiosulfate pentahydrate,unii-hx1032v43m,ccris 3952,thiosulfuric acid, disodium salt, pentahydrate,sodium hyposulfite pentahydrate
IUPAC Name	disodium;dioxido-oxo-sulfanylidene-$l^{6}-sulfane;pentahydrate
InChI Key	PODWXQQNRWNDGD-UHFFFAOYSA-L
Molecular Formula	H10Na2O8S2

117

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Thiocyanate Standard Solution (0.1N (N/10)/Certified), Fisher Chemical

CAS: 333-20-0 Molecular Formula: CKNS Molecular Weight (g/mol): 97.176 MDL Number: MFCD00011413 InChI Key: ZNNZYHKDIALBAK-UHFFFAOYSA-M Synonym: Potassium Thiocyanate Solutions PubChem CID: 516872 ChEBI: CHEBI:30951 IUPAC Name: potassium;thiocyanate SMILES: C(#N)[S-].[K+]

Pricing & Availability
Specifications

PubChem CID	516872
CAS	333-20-0
Molecular Weight (g/mol)	97.176
ChEBI	CHEBI:30951
MDL Number	MFCD00011413
SMILES	C(#N)[S-].[K+]
Synonym	Potassium Thiocyanate Solutions
IUPAC Name	potassium;thiocyanate
InChI Key	ZNNZYHKDIALBAK-UHFFFAOYSA-M
Molecular Formula	CKNS

118

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Buffer Concentrate, pH 7.00 (Certified), Fisher Chemical™

Pricing & Availability
Specifications

CAS	7664-38-2
Molecular Weight (g/mol)	380.17
MDL Number	MFCD00146206
Traceability to NIST	Traceable to NIST.
Packaging	Poly Bottle
Physical Form	Liquid
Chemical Name or Material	Buffer Concentrate, pH 7.00
Grade	Certified
Identification	Pass Test
InChI Key	UEUXEKPTXMALOB-UHFFFAOYSA-J
Molecular Formula	C10H12N2Na4O8
ChemAlert Storage Symbol	Gray

119

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

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120

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Buffer Solution, pH 8.00 (Certified), Fisher Chemical™

Potassium Phosphate Monobasic/Sodium Hydroxide

Pricing & Availability
Specifications

CAS	7732-18-5
Health Hazard 3	Emergency Overview Irritating to eyes and skin. 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. Obtain medical attention. 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:2 Flammability:0 Instability:0
MDL Number	MFCD00147253
Health Hazard 2	WARNING!
Traceability to NIST	Traceable to NIST.
Physical Form	Liquid
pH	8.0
Chemical Name or Material	Buffer Solution, pH 8.00
Grade	Certified
Identification	Pass Test
ChemAlert Storage Symbol	Gray

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Buffers and Standards

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

Hydrogen Peroxide, Fisher Chemical™ GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

Hydrogen Peroxide, 30% (Certified ACS), Thermo Scientific™ GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

Tris Hydrochloride, 1M Solution (pH 8.0/Mol. Biol.), Fisher BioReagents™ 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

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

Buffer Solution, pH 8.00 (Certified), Fisher Chemical™ GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

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

Hydrogen Peroxide, Fisher Chemical™

Hydrogen Peroxide, 30% (Certified ACS), Thermo Scientific™

Tris Hydrochloride, 1M Solution (pH 8.0/Mol. Biol.), Fisher BioReagents™

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

Sodium Thiosulfate Pentahydrate Solution (0.1N (N/10)/Certified), Fisher Chemical™

Buffer Solution, pH 8.00 (Certified), Fisher Chemical™