Buffers and Standards

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


















Filtered Search Results

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

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

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 |
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 |
Content And Storage | Room temperature |
---|---|
Form | Liquid |
Buffer Solution, pH 7.00 (Certified), Fisher Chemical™

Potassium Phosphate Monobasic/Sodium Hydroxide

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 |
Buffer Solution, pH 4.00, Color-Coded Red (Certified), Fisher Chemical™
pH/temperature conversions given on label

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 |
Boiling Point | 100°C |
---|---|
Description | Potassium Phosphate Monobasic/Sodium Hydroxide. pH/temperature conversions given on label. |
Color | Yellow |
Traceability to NIST | Traceable to NIST. |
Physical Form | Liquid |
Chemical Name or Material | Buffer Solution, pH 7.00, Color-Coded Yellow |
Grade | Certified |
Identification | Pass Test |
ChemAlert Storage Symbol | Gray |
Density | 1.0g/cm³ |
Vapor Pressure | 760mmHg at 20°C |
Absorbance | Pass Test |
CAS | 1934-21-0 |
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! |
Solubility Information | Soluble in water |
pH | 7.00 |
Specific Gravity | 1 |
Melting Point | 0°C |
Buffer, Reference Standard, pH 10.00 ± 0.01 at 25°C (Color Coded Blue), Ricca Chemical
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Boiling Point | 100°C |
---|---|
Color | Blue |
Physical Form | Liquid |
CAS Min % | 0.39 |
Chemical Name or Material | Buffer, Reference Standard |
Concentration | 1X |
For Use With (Application) | Calibration |
Name Note | pH 10.00 ± 0.01 at 25 deg C (Color Coded Blue) |
CAS | 7732-18-5 |
For Use With (Equipment) | pH Meter and Electrode |
Solubility Information | Miscible |
pH | 10 |
DOT Information | Not Regulated by DOT |
Solution Type | Colored pH Buffer |
CAS Max % | 0.41 |
Melting Point | 0°C |
Thermo Scientific™ Orion™ pH Buffer Bottles
Perform accurate, reproducible pH calibrations with these color-coded buffer bottles.

For Use With (Equipment) | pH Meter and Electrode |
---|---|
Traceability to NIST | Yes |
Physical Form | Liquid |
Chemical Name or Material | pH Buffer, bottles |
Corning™ Cell Culture Phosphate Buffered Saline (1X)

With low endotoxin content. Without calcium and magnesium.
Dilution | 1 X |
---|---|
Content And Storage | 2° to 30°C |
Form | Liquid |
Formulation | Potassium Dihydrogen Phosphate 0.144g/L, Sodium Chloride 9g/L, Disodium Phosphate 0.795g/L |
pH | 7.3 to 7.5 |
Linear Formula | KH2PO4 |
---|---|
Color | Colorless |
Traceability to NIST | Traceable to NIST |
Physical Form | Liquid |
Chemical Name or Material | Buffer Solution pH 7.0 at 25°C |
Grade | Certified |
Identification | Passes Test |
CAS | 1310-73-2 |
Health Hazard 3 | GHS P Statement If in contact with skin or eyes, rinse thoroughly with water for 15-20 minutes. If swallowed, get medical attention. |
Decomposition Information | Phosphorus oxides; Sodium oxide |
Health Hazard 2 | GHS H Statement Solution is not hazardous. |
Solubility Information | Soluble in water |
pH | 7.00 ±0.01 |
Recommended Storage | Room Temperature |
Formula Weight | 136.09 |
CAS Max % | 0.08 |
Content And Storage | Room temperature |
---|---|
Form | Liquid |
Packaging Type | Poly Cube |
pH | 7.3 to 7.5 |
Melting Point | 0°C |
TBE Buffer, Tris-Borate-EDTA, 10X Solution, Electrophoresis, Fisher BioReagents™

CAS: 77-86-1,7732-18-5,60-00-4,10043-35-3 Synonym: TBE

CAS | 77-86-1,7732-18-5,60-00-4,10043-35-3 |
---|---|
Synonym | TBE |
Buffer, Reference Standard, pH 7.00 ± 0.01 at 25°C (Color Coded Yellow), Ricca Chemical
SureTRACE
Supports traceability with guaranteed access to certificates and proactive change notifications.
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Small and Specialty Supplier Partner
Small and/or specialty supplier based on Federal laws and SBA requirements.
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Small and/or specialty supplier based on Federal laws and SBA requirements.
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CAS | 7732-18-5 |
---|---|
For Use With (Equipment) | pH Meter and Electrode |
Physical Form | Liquid |
pH | 7 |
CAS Min % | 0.48 |
Chemical Name or Material | Buffer, Reference Standard |
Concentration | 1X |
For Use With (Application) | Calibration |
Solution Type | Colored pH Buffer |
CAS Max % | 0.5 |
Buffer, Reference Standard, pH 4.00 ± 0.01 at 25°C (Color Coded Red), Ricca Chemical
SureTRACE
Supports traceability with guaranteed access to certificates and proactive change notifications.
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Small and Specialty Supplier Partner
Small and/or specialty supplier based on Federal laws and SBA requirements.
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Supports traceability with guaranteed access to certificates and proactive change notifications.
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Small and/or specialty supplier based on Federal laws and SBA requirements.
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Name Note | pH 4.00 ± 0.01 at 25 deg C (Color Coded Red) |
---|---|
CAS | 7732-18-5 |
For Use With (Equipment) | pH Meter and Electrode |
Physical Form | Liquid |
pH | 4 |
CAS Min % | 0.99 |
Chemical Name or Material | Buffer, Reference Standard |
Concentration | 1X |
For Use With (Application) | Calibration |
Solution Type | Colored pH Buffer |
CAS Max % | 1.03 |