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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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Search Within Results
Keyword Search:
1 – 15 of 11,800 results
1

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

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

EDGE
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
2

Hydrogen Peroxide, 50% (Certified), 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

EDGE
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
3
Promotions Available

Sodium Thiosulfate Pentahydrate Solution (0.025N (N/40)/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+]

EDGE
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
4
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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

EDGE
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
5

Traceable™ One-Shot™ Conductivity Calibration Standards Certified Reference Material Producer (CRM), Fisherbrand™

Ideal for lab or field applications

EDGE
For Use With (Equipment) Conductivity Meter
Solubility Soluble in water
Color Clear
Packaging 6/Pk.
Chemical Name or Material Conductivity Standard
6

Buffer Solution, pH 4.00, Color-Coded Red (Certified), Fisher Chemical™

pH/temperature conversions given on label

EDGE
Boiling Point 100°C
Description pH/temperature conversions given on label.
Color Red
Traceability to NIST Traceable to NIST.
Physical Form Liquid
Chemical Name or Material Buffer Solution, pH 4.00, Color-Coded Red
Grade Certified
Identification Pass Test
ChemAlert Storage Symbol Gray
Density 1.0g/cm³
Absorbance Pass Test
Concentration or Composition (by Analyte or Components) Potassium Hydrogen Phthalate
CAS 16423-68-0
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!
Solubility Information Soluble in water
pH 4.0
Specific Gravity 1
Melting Point 0°C
7
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Buffer Solution, pH 7.00 (Certified), Fisher Chemical™

Potassium Phosphate Monobasic/Sodium Hydroxide

EDGE
Color Colorless
Traceability to NIST Traceable to NIST.
Physical Form Liquid
Chemical Name or Material Buffer Solution, pH 7.00
Grade Certified
Identification Pass Test
ChemAlert Storage Symbol Gray
Density 1.003g/cm³
Vapor Pressure 14mmHg at 20°C
CAS 7732-18-5
MDL Number MFCD00134130
pH 7.00
Synonym Chlorine Titrimeter Reagent
Melting Point 0°C
8
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Buffer Concentrate, pH 7.00 (Certified), Fisher Chemical™

EDGE
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
9

Buffer Solution, pH 10.00 (Certified), Fisher Chemical™

Potassium Carbonate/Potassium Tetraborate/Potassium Hydroxide/Disodium EDTA Dihydrate

EDGE
CAS 12228-88-5
Health Hazard 3 Emergency Overview
May cause eye, skin, and respiratory tract irritation. Handle in accordance with good industrial hygiene and safety practice. Wear personal protective equipment. 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!
Color Colorless
Traceability to NIST Traceable to NIST.
Physical Form Liquid
pH 10
Chemical Name or Material Buffer Solution, pH 10.00
Grade Certified
Identification Pass Test
ChemAlert Storage Symbol Gray
10

accumet™ pH 1.68 Buffer, Fisherbrand™

EDGE
11
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Buffer Solution, pH 6.00 (Certified), Fisher Chemical™

EDGE
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
12
Promotions Available

Buffer Solution, pH 10.00, Color-Coded Blue (Certified), Fisher Chemical™

EDGE
Boiling Point 100°C
Color Blue
Traceability to NIST Traceable to NIST.
Physical Form Liquid
Chemical Name or Material Buffer Solution, pH 10.00, Color-Coded Blue
Grade Certified
Identification Pass Test
ChemAlert Storage Symbol Gray
Absorbance Pass Test
CAS 1310-58-3
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!
pH 10.0
Specific Gravity 1.013 at 25°C
Melting Point 0°C
13
Promotions Available

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

Potassium Phosphate Monobasic/Sodium Hydroxide

EDGE
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
14
Promotions Available

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

Boric Acid/Potassium Chloride/Sodium Hydroxide

EDGE
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
15
Promotions Available

Buffer Solution, pH 5.00 (Certified), Fisher Chemical™

EDGE
Boiling Point 100°C
CAS 7732-18-5
MDL Number MFCD00146206
Traceability to NIST Traceable to NIST.
Packaging Poly Bottle
Physical Form Liquid
pH 5.0
Chemical Name or Material Buffer Solution, pH 5.00
Grade Certified
Identification Pass Test
ChemAlert Storage Symbol Gray
Melting Point 0°C