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















Risultati della ricerca filtrata

Thermo Scientific™ Flaconi di tampone pH Orion™
Esecuzione di calibrazioni del pH accurate e riproducibili con flaconi di tampone pH Thermo Scientific™ Orion™ codificati a colori.

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Tracciabilità a NIST | Sì |
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Da utilizzare con (apparecchiatura) | pH Meter and Electrode |
Forma fisica | Liquid |
Materiale o nome chimico | pH Buffer, bottles |
Buffer Solution pH4.00 (Phthalate), NIST Standard Solution ready to use for pH measurement, Fisher Chemical™
Numero MDL: 217672

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Numero MDL | 217672 |
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pH Buffers, Twin Neck, Fisherbrand™
Perform accurate pH calibrations with color-coded, twin neck Fisherbrand™ pH Buffer Bottles.

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Da utilizzare con (applicazione) | pH calibration |
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Buffer Solution pH7.00 (Phosphate), NIST Standard Solution ready to use for pH measurement, Fisher Chemical™
Numero MDL: 217672

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Numero MDL | 217672 |
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Buffer Colour Coded Solution pH7.00 (Phosphate) Yellow, NIST Standard Solution ready to use for pH measurement, Fisher Chemical™
CAS: 7778-77-0 Formula molecolare: H2KO4P Molecular Weight (g/mol): 136.08 InChI Key: GNSKLFRGEWLPPA-UHFFFAOYSA-M IUPAC Name: potassium dihydrogen phosphate SMILES: [K+].OP(O)([O-])=O

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Formula molecolare | H2KO4P |
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CAS | 7778-77-0 |
Molecular Weight (g/mol) | 136.08 |
SMILES | [K+].OP(O)([O-])=O |
IUPAC Name | potassium dihydrogen phosphate |
InChI Key | GNSKLFRGEWLPPA-UHFFFAOYSA-M |
Thermo Scientific Alfa Aesar Oxalic acid, 10% w/v aq. soln.
CAS: 144-62-7 Formula molecolare: C2H2O4 Molecular Weight (g/mol): 90.034 Numero MDL: MFCD00002573 InChI Key: MUBZPKHOEPUJKR-UHFFFAOYSA-N PubChem CID: 971 ChEBI: CHEBI:16995 IUPAC Name: oxalic acid SMILES: C(=O)(C(=O)O)O

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Numero MDL | MFCD00002573 |
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PubChem CID | 971 |
Formula molecolare | C2H2O4 |
CAS | 144-62-7 |
Molecular Weight (g/mol) | 90.034 |
ChEBI | CHEBI:16995 |
SMILES | C(=O)(C(=O)O)O |
IUPAC Name | oxalic acid |
InChI Key | MUBZPKHOEPUJKR-UHFFFAOYSA-N |
Thermo Scientific Alfa Aesar Manganese, AAS standard solution, Specpure™ Mn 1000μg/mL
CAS: 7439-96-5 Formula molecolare: Mn Molecular Weight (g/mol): 54.94 Numero MDL: MFCD00011111 InChI Key: PWHULOQIROXLJO-UHFFFAOYSA-N PubChem CID: 23930 ChEBI: CHEBI:35154 IUPAC Name: manganese SMILES: [Mn]
Numero MDL | MFCD00011111 |
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PubChem CID | 23930 |
Formula molecolare | Mn |
CAS | 7439-96-5 |
Molecular Weight (g/mol) | 54.94 |
ChEBI | CHEBI:35154 |
SMILES | [Mn] |
IUPAC Name | manganese |
InChI Key | PWHULOQIROXLJO-UHFFFAOYSA-N |
Thermo Scientific Alfa Aesar Sodium thiosulfate, 1.0N Standardized Solution
CAS: 7772-98-7 Formula molecolare: Na2O3S2 Molecular Weight (g/mol): 158.10 Numero MDL: MFCD00003499 InChI Key: AKHNMLFCWUSKQB-UHFFFAOYSA-L PubChem CID: 24477 IUPAC Name: disodium sulfanidesulfonate SMILES: [Na+].[Na+].[O-]S([S-])(=O)=O
Numero MDL | MFCD00003499 |
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PubChem CID | 24477 |
Formula molecolare | Na2O3S2 |
CAS | 7772-98-7 |
Molecular Weight (g/mol) | 158.10 |
SMILES | [Na+].[Na+].[O-]S([S-])(=O)=O |
IUPAC Name | disodium sulfanidesulfonate |
InChI Key | AKHNMLFCWUSKQB-UHFFFAOYSA-L |
Thermo Scientific Acros Lead standard solution, for AAS, 1 mg/ml Pb in 2-5% HNO3
CAS: 10099-74-8 | N2O6Pb | 331.20 g/mol
Peso formulazione | 331.21 |
---|---|
Numero MDL | MFCD00011153 |
Pericolo per la salute 1 | Danger |
Nota nome | 1 mg/ml Pb in 2% HNO3 |
Colore | Brown to Red or Green |
Pericolo per la salute 2 | GHS H Statement: Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation. May be corrosive to metals. |
Pericolo per la salute 3 | GHS P Statement: Keep only in original container. Wear protective gloves/protective clothing/eye protection/face protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Avoid breathing dust/fume/gas/mist/vapors/spray. Wash face, hands and any exposed skin thoroughly after handling. IF ON SKIN: Wash with plenty of soap and water. WARNING: The information provided on this web site was developed in compliance with European Union (EU) regulations and is correct to the best of our knowledge, information and belief at the date of its publication. The information given is designed only as a guide for safe handling and use. It is not to be considered as either a warranty or quality specification. |
Forma fisica | Powder/Crystals |
Molecular Weight (g/mol) | 331.20 |
ChEBI | CHEBI:37187 |
SMILES | [Pb++].[O-][N+]([O-])=O.[O-][N+]([O-])=O |
Densità | 1.0200g/mL |
InChI Key | RLJMLMKIBZAXJO-UHFFFAOYSA-N |
Punti di ebollizione | 101.0°C |
Gravità specifica | 1.02 |
Imballaggio | Plastic bottle |
PubChem CID | 24924 |
Formula molecolare | N2O6Pb |
CAS | 7732-18-5 |
Indice di Merck | 15, 5469 |
Punto di fusione | -3.0°C |
Materiale o nome chimico | Lead standard solution |
Grado | AAS |
IUPAC Name | λ²-lead(2+) dinitrate |
Concentrazione | 997 to 1003 μg/mL of Pb(2+) in 2 to 5% HNO3 (20°C) |
Fisher Bioreagents Tris Base (White Crystals or Crystalline Powder/Molecular Biology), Fisher BioReagents™
CAS: 77-86-1 Formula molecolare: C4H11NO3 Molecular Weight (g/mol): 121.136 InChI Key: LENZDBCJOHFCAS-UHFFFAOYSA-N Sinonimo: Trimethylol Aminomethane,Tris(hydroxymethyl)aminomethane,2-Amino-2-(hydroxymethyl)-1,3-propanediol,THAM,Tris base,Trometamol PubChem CID: 6503 ChEBI: CHEBI:9754 IUPAC Name: 2-amino-2-(hydroxymethyl)propane-1,3-diol SMILES: C(C(CO)(CO)N)O
Sinonimo | Trimethylol Aminomethane,Tris(hydroxymethyl)aminomethane,2-Amino-2-(hydroxymethyl)-1,3-propanediol,THAM,Tris base,Trometamol |
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PubChem CID | 6503 |
Formula molecolare | C4H11NO3 |
CAS | 77-86-1 |
Molecular Weight (g/mol) | 121.136 |
ChEBI | CHEBI:9754 |
SMILES | C(C(CO)(CO)N)O |
IUPAC Name | 2-amino-2-(hydroxymethyl)propane-1,3-diol |
InChI Key | LENZDBCJOHFCAS-UHFFFAOYSA-N |
HYDRANAL™ - NEXTGEN Coulomat AG-FI, Honeywell Fluka™
Anolyte for coulometric Karl Fischer titrations, for cells with and without diaphragm
Numero UN | UN1230 |
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Imballaggio | Glass Bottle |
CAS min. % | ≥60% |
Colore | Yellow |
Forma fisica | Liquid |
Informazioni di solubilità | Completely Miscible in Water |
CAS | 67-56-1 |
Punto di fusione | -98°C (Methanol) |
Conservazione consigliata | Temperatura ambiente |
Materiale o nome chimico | HYDRANAL™ - NEXTGEN Coulomat AG-FI |
Densità | 0.893 g/cm3 (at 20°C) |
Punti di ebollizione | 64°C to 65°C (Methanol) |
Punto d'infiammabilità | 14°C |
Thermo Scientific Acros Bromine, 1M solution in acetic acid, AcroSeal™
CAS: 7726-95-6 | Br | 79.91 g/mol
Peso formulazione | 159.82 |
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Sinonimo | bromine,dibromine,brom,bromine solution,brome,bromo,broom,bromine water,bromo italian,bromo spanish |
Numero MDL | MFCD00010896 |
Formula lineare | Br2 |
Pericolo per la salute 1 | GHS Signal Word: Danger |
Nota nome | 1M solution in acetic acid |
Pericolo per la salute 2 | GHS P Statement Fatal if inhaled. Causes severe skin burns and eye damage. Very toxic to aquatic life. Flammable liquid and vapor. |
Colore | Red |
Pericolo per la salute 3 | GHS P Statement Wear protective gloves/protective clothing/eye protection/face protection. IF SWALLOWED: rinse mouth. Do NOT induce vomiting. Keep away from heat/sparks/open flames/hot surfaces. - No smoking. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a POISON CENTER or doctor/physician. Avoid release to the environment. |
Forma fisica | Liquid |
Molecular Weight (g/mol) | 79.91 |
ChEBI | CHEBI:29224 |
SMILES | [Br-] |
Densità | 3.111 |
InChI Key | CPELXLSAUQHCOX-UHFFFAOYSA-M |
Punto d'infiammabilità | 40°C |
PubChem CID | 24408 |
Formula molecolare | Br |
Informazioni di solubilità | Solubility in water: soluble. |
CAS | 64-19-7 |
Indice di Merck | 15, 1401 |
Materiale o nome chimico | Bromine |
IUPAC Name | bromide |
Concentrazione | 0.90 to 1.10M |
Thermo Scientific Acros Benzalkonium chloride, alkyl distribution C8-C16, 50 wt% aqueous solution
CAS: 8001-54-5 Formula molecolare: C9H13ClN Molecular Weight (g/mol): 170.66 Numero MDL: MFCD00145757 Sinonimo: Alkyl-benzyl-dimethylammonium chloride
Sinonimo | Alkyl-benzyl-dimethylammonium chloride |
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Numero MDL | MFCD00145757 |
Formula molecolare | C9H13ClN |
CAS | 8001-54-5 |
Molecular Weight (g/mol) | 170.66 |
Thermo Scientific Acros Nickel standard solution, for AAS, 1 mg/ml Ni in 2-5% HNO3
CAS: 7440-02-0 | Ni | 58.69 g/mol
Peso formulazione | 58.69 |
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Numero MDL | MFCD00011137 MFCD06798735 |
Pericolo per la salute 1 | Danger |
Nota nome | 1 mg/ml Ni in 2% HNO3 |
Colore | Green |
Pericolo per la salute 2 | GHS H Statement May cause cancer by inhalation. May damage the unborn child. Causes severe skin burns and eye damage. May produce an allergic reaction. Harmful to aquatic life with long lasting effects. May be corrosive to metals. |
Pericolo per la salute 3 | GHS P Statement Wear protective gloves/protective clothing/eye protection/face protection. IF SWALLOWED: rinse mouth. Do NOT induce vomiting. IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water/shower. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a POISON CENTER or doctor/physician. Keep only in original container. |
Forma fisica | Crystals, Crystalline Powder and/or Chunks |
Molecular Weight (g/mol) | 58.69 |
ChEBI | CHEBI:28112 |
SMILES | [Ni] |
Densità | 1.0320g/mL |
InChI Key | PXHVJJICTQNCMI-UHFFFAOYSA-N |
Gravità specifica | 1.032 |
CAS min. % | 96.9 |
Imballaggio | Plastic bottle |
PubChem CID | 935 |
Formula molecolare | Ni |
CAS | 7732-18-5 |
Materiale o nome chimico | Nickel standard solution |
Grado | AAS |
IUPAC Name | nickel |
Solubilità | Soluble in water |
CAS max % | 97.1 |
Concentrazione | 990 to 1010 μg/mL Ni in 2 to 5% HNO3 (20°C) |
Thermo Scientific Alfa Aesar Potassium chloride, 0.010M, Conductivity Standard
CAS: 7447-40-7 Formula molecolare: ClK Molecular Weight (g/mol): 74.55 Numero MDL: MFCD00011360 InChI Key: WCUXLLCKKVVCTQ-UHFFFAOYSA-M PubChem CID: 4873 ChEBI: CHEBI:32588 SMILES: [Cl-].[K+]
Numero MDL | MFCD00011360 |
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PubChem CID | 4873 |
Formula molecolare | ClK |
CAS | 7447-40-7 |
Molecular Weight (g/mol) | 74.55 |
ChEBI | CHEBI:32588 |
SMILES | [Cl-].[K+] |
InChI Key | WCUXLLCKKVVCTQ-UHFFFAOYSA-M |