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
Résultats de la recherche filtrée
Buffer Solution, pH 6.00 (Certified), Fisher Chemical™
| Danger pour la santé 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 |
|---|---|
| Symbole de stockage ChemAlert | Gray |
| Danger pour la santé 2 | CAUTION! |
| Qualité | Certified |
| Identification | Pass Test |
| Point d’ébullition | 100°C |
| Forme physique | Liquid |
| Couleur | Undesignated |
| Numéro MDL | MFCD00134130 |
| Nom chimique ou matériau | Buffer Solution, pH 6.00 |
| CAS | 1310-73-2 |
| pH | 6.00 |
| Point de fusion | 0°C |
| Traçabilité au NIST | Traceable to NIST. |
Buffer Solution, pH 7.40 (Certified), Fisher Chemical™
Potassium Phosphate Monobasic/Sodium Hydroxide
| Numéro MDL | MFCD00134130 |
|---|---|
| Symbole de stockage ChemAlert | Gray |
| Nom chimique ou matériau | Buffer Solution, pH 7.40 |
| CAS | 7732-18-5 |
| Qualité | Certified |
| Conditionnement | Poly Bottle |
| pH | 7.4 |
| Point de fusion | 0°C |
| Identification | Pass Test |
| Point d’ébullition | 100°C |
| Traçabilité au NIST | Traceable to NIST. |
| Forme physique | Liquid |
| Densité | 1.0g/cm³ |
TAE Buffer, Tris-Acetate-EDTA, 50X Solution, Electrophoresis, Fisher BioReagents™
Tris-Acetate-EDTA, CAS Number-77-86-1, 60-00-4, 6850-28-8, TAE, 4L, Gray, Tris (24%), Acetic Acid (5.0%), and EDTA (<2%)., DNase free, Pass Test, Filtered through a 0.2-micron filter., Electrophoresis, 50X Solution, Poly CUBE, Liquid, Protease free, DNase-, RNase- and Protease-Free, RT
| Note relative au nom | 50X Solution |
|---|---|
| Synonyme | TAE |
| Symbole de stockage ChemAlert | Gray |
| Concentration or Composition (by Analyte or Components) | Tris (24%), Acetic Acid (5.0%), and EDTA (<2%). |
| Filtré à travers | Filtered through a 0.2-micron filter. |
| CAS | 6850-28-8 |
| Notes de qualité de la pureté | DNase-, RNase- and Protease-Free |
| Qualité | Electrophoresis |
| DNase | DNase free |
| Protéase | Protease free |
| Forme physique | Liquid |
| Température de stockage | RT |
HEPES (Fine White Crystals/Molecular Biology), Fisher BioReagents™
Commonly used buffering agent | CAS: 7365-45-9 | C8H18N2O4S | 238.30 g/mol
| Poids moléculaire (g/mol) | 238.30 |
|---|---|
| Danger pour la santé 3 | Emergency Overview Causes 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. 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. Obtain medical attention. Do not induce vomiting. Obtain medical attention. Obtain medical attention. . NFPA Health:2 Flammability:1 Instability:1 |
| Symbole de stockage ChemAlert | Gray |
| Danger pour la santé 2 | WARNING! |
| Qualité | Molecular Biology |
| ChEBI | CHEBI:42334 |
| SMILES | OCCN1CCN(CCS(O)(=O)=O)CC1 |
| Identification | Pass Test |
| DNase | DNase free |
| Merck Index | 15, 4689 |
| Protéase | Protease free |
| Température de stockage | RT |
| Formule moléculaire | C8H18N2O4S |
| Informations sur la solubilité | Soluble in water |
| Couleur | White |
| Numéro MDL | MFCD00006158 |
| Nom chimique ou matériau | HEPES |
| Absorbance | 0.01 max. (0.1M solution) at 280nm |
| CAS | 7365-45-9 |
| CID PubChem | 23831 |
| Notes de qualité de la pureté | DNase-, RNase- and Protease-Free |
| pH | 5.0 to 6.5 |
| Clé InChI | JKMHFZQWWAIEOD-UHFFFAOYSA-N |
| Plage de pourcentage du dosage | ≥99 % |
| Pourcentage de pureté | ≥99% |
Buffer Solution, pH 7.00 (Certified), Fisher Chemical™
Potassium Phosphate Monobasic/Sodium Hydroxide
| Symbole de stockage ChemAlert | Gray |
|---|---|
| Tension de vapeur | 14mmHg at 20°C |
| Qualité | Certified |
| Identification | Pass Test |
| Forme physique | Liquid |
| Couleur | Colorless |
| Synonyme | Chlorine Titrimeter Reagent |
| Numéro MDL | MFCD00134130 |
| Nom chimique ou matériau | Buffer Solution, pH 7.00 |
| CAS | 7732-18-5 |
| pH | 7.00 |
| Point de fusion | 0°C |
| Traçabilité au NIST | Traceable to NIST. |
| Densité | 1.003g/cm³ |
TBE Buffer, Tris-Borate-EDTA, 10X Solution, Electrophoresis, Fisher BioReagents™
CAS: 10043-35-3 Synonyme: TBE
| Synonyme | TBE |
|---|---|
| CAS | 10043-35-3 |
Buffer Solution, pH 4.00, Color-Coded Red (Certified), Fisher Chemical™
pH/temperature conversions given on label
| Danger pour la santé 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 |
|---|---|
| Symbole de stockage ChemAlert | Gray |
| Description | pH/temperature conversions given on label. |
| Danger pour la santé 2 | CAUTION! |
| Qualité | Certified |
| Identification | Pass Test |
| Point d’ébullition | 100°C |
| Gravité spécifique | 1 |
| Forme physique | Liquid |
| Informations sur la solubilité | Soluble in water |
| Couleur | Red |
| Numéro MDL | MFCD00146206 |
| Nom chimique ou matériau | Buffer Solution, pH 4.00, Color-Coded Red |
| Absorbance | Pass Test |
| Concentration or Composition (by Analyte or Components) | Potassium Hydrogen Phthalate |
| CAS | 16423-68-0 |
| pH | 4.0 |
| Point de fusion | 0°C |
| Traçabilité au NIST | Traceable to NIST. |
| Densité | 1.0g/cm³ |
| Danger pour la santé 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 |
|---|---|
| Symbole de stockage ChemAlert | Gray |
| Description | Potassium Phosphate Monobasic/Sodium Hydroxide. pH/temperature conversions given on label. |
| Tension de vapeur | 760mmHg at 20°C |
| Danger pour la santé 2 | CAUTION! |
| Qualité | Certified |
| Identification | Pass Test |
| Point d’ébullition | 100°C |
| Gravité spécifique | 1 |
| Forme physique | Liquid |
| Informations sur la solubilité | Soluble in water |
| Couleur | Yellow |
| Numéro MDL | MFCD00134130 |
| Nom chimique ou matériau | Buffer Solution, pH 7.00, Color-Coded Yellow |
| Absorbance | Pass Test |
| CAS | 1934-21-0 |
| pH | 7.00 |
| Point de fusion | 0°C |
| Traçabilité au NIST | Traceable to NIST. |
| Densité | 1.0g/cm³ |
Buffer Solution, pH 4.00 (Certified), Fisher Chemical™
| Couleur | Undesignated |
|---|---|
| Numéro MDL | MFCD00146206 |
| Danger pour la santé 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 |
| Symbole de stockage ChemAlert | Gray |
| Nom chimique ou matériau | Buffer Solution, pH 4.00 |
| CAS | 67-56-1 |
| Danger pour la santé 2 | CAUTION! |
| Qualité | Certified |
| pH | 4.0 |
| Identification | Pass Test |
| Traçabilité au NIST | Traceable to NIST. |
| Forme physique | Liquid |
| Densité | 1.0054g/cm³ |
Tris Base (White Crystals or Crystalline Powder/Molecular Biology), Fisher BioReagents™
CAS: 77-86-1 Formule moléculaire: C4H11NO3 Poids moléculaire (g/mol): 121.136 Clé InChI: LENZDBCJOHFCAS-UHFFFAOYSA-N Synonyme: Trimethylol Aminomethane,Tris(hydroxymethyl)aminomethane,2-Amino-2-(hydroxymethyl)-1,3-propanediol,THAM,Tris base,Trometamol CID PubChem: 6503 ChEBI: CHEBI:9754 Nom IUPAC: 2-amino-2-(hydroxymethyl)propane-1,3-diol SMILES: C(C(CO)(CO)N)O
| Poids moléculaire (g/mol) | 121.136 |
|---|---|
| Synonyme | Trimethylol Aminomethane,Tris(hydroxymethyl)aminomethane,2-Amino-2-(hydroxymethyl)-1,3-propanediol,THAM,Tris base,Trometamol |
| CAS | 77-86-1 |
| CID PubChem | 6503 |
| ChEBI | CHEBI:9754 |
| Nom IUPAC | 2-amino-2-(hydroxymethyl)propane-1,3-diol |
| Clé InChI | LENZDBCJOHFCAS-UHFFFAOYSA-N |
| SMILES | C(C(CO)(CO)N)O |
| Formule moléculaire | C4H11NO3 |
Sodium Thiosulfate Pentahydrate Solution (0.025N (N/40)/Certified), Fisher Chemical
CAS: 10102-17-7 Formule moléculaire: H10Na2O8S2 Poids moléculaire (g/mol): 248.172 Numéro MDL: MFCD00003499 Clé InChI: PODWXQQNRWNDGD-UHFFFAOYSA-L Synonyme: sodium thiosulfate pentahydrate,ametox,sodium thiosulfate, pentahydrate,antichlor,tinver,disodium thiosulfate pentahydrate,unii-hx1032v43m,ccris 3952,thiosulfuric acid, disodium salt, pentahydrate,sodium hyposulfite pentahydrate CID PubChem: 61475 ChEBI: CHEBI:32150 Nom IUPAC: disodium;dioxido-oxo-sulfanylidene-$l^{6}-sulfane;pentahydrate SMILES: O.O.O.O.O.[O-]S(=O)(=S)[O-].[Na+].[Na+]
| Poids moléculaire (g/mol) | 248.172 |
|---|---|
| Synonyme | sodium thiosulfate pentahydrate,ametox,sodium thiosulfate, pentahydrate,antichlor,tinver,disodium thiosulfate pentahydrate,unii-hx1032v43m,ccris 3952,thiosulfuric acid, disodium salt, pentahydrate,sodium hyposulfite pentahydrate |
| Numéro MDL | MFCD00003499 |
| CAS | 10102-17-7 |
| CID PubChem | 61475 |
| ChEBI | CHEBI:32150 |
| Nom IUPAC | disodium;dioxido-oxo-sulfanylidene-$l^{6}-sulfane;pentahydrate |
| Clé InChI | PODWXQQNRWNDGD-UHFFFAOYSA-L |
| SMILES | O.O.O.O.O.[O-]S(=O)(=S)[O-].[Na+].[Na+] |
| Formule moléculaire | H10Na2O8S2 |
Thermo Scientific™ Orion™ pH Buffer Bottles
Perform accurate, reproducible pH calibrations with these color-coded buffer bottles.
| Nom chimique ou matériau | pH Buffer, bottles |
|---|---|
| À utiliser avec (équipement) | pH Meter and Electrode |
| Traçabilité au NIST | Yes |
| Forme physique | Liquid |
Thermo Scientific™ Orion™ Conductivity Calibration Standards
High-accuracy conductivity calibration standards traceable to NIST™ standard reference materials, designed for reliable and reproducible measurements in lab and field. Available in a wide range of conductivity values to support consistent calibration, reliable measurements and regulatory.
| Couleur | Clear |
|---|---|
| Type | Conductivity Calibration Standard |
| Description | Conductivity Standard |
| Solubilité | Soluble |
| Type de solution | Standard Solution |
| Point d’ébullition | 100°C |
| Traçabilité au NIST | Yes |
| Note relative au nom | Fehling Solution A |
|---|---|
| Couleur | Blue |
| Nom chimique ou matériau | Fehling's Copper Solution |
| CAS | 7732-18-5 |
| Qualité | Laboratory |
| pH | ∼4 |
| Forme physique | Liquid |