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
Buffer Colour Coded Solution pH10.00 (Borate) Blue, NIST Standard Solution ready to use for pH measurement, Fisher Chemical™
CAS: 10043-35-3 Formula molecolare: BH3O3 Molecular Weight (g/mol): 61.83 InChI Key: KGBXLFKZBHKPEV-UHFFFAOYSA-N IUPAC Name: boric acid SMILES: OB(O)O
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Buffer Solution pH10.00 (Borate), NIST Standard Solution ready to use for pH measurement, Fisher Chemical™
Numero MDL: 217672
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Buffer Solution pH4.00 (Phthalate), NIST Standard Solution ready to use for pH measurement, Fisher Chemical™
Numero MDL: 217672
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Iodine Solution 0.05M (0.1N), NIST Standard Solution Ready To Use, for Volumetric Analysis, meets analytical specification of Ph.Eur., BP, Fisher Chemical™
CAS: 7553-56-2 Formula molecolare: I2 Molecular Weight (g/mol): 253.81 Numero MDL: MFCD00011355 MFCD00164163 InChI Key: PNDPGZBMCMUPRI-UHFFFAOYSA-N Sinonimo: iodine,diiodine,iodine crystals,iodine sublimed,tincture iodine,vistarin,eranol,iodio,iodine solution,iode PubChem CID: 807 ChEBI: CHEBI:17606 IUPAC Name: iodio molecolare SMILES: II
Hydrogen Peroxide 6% (w/v) (20 Volumes), Extra Pure SLR, Fisher Chemical™
CAS: 7722-84-1 Formula molecolare: H2O2 Molecular Weight (g/mol): 34.014 Numero MDL: 11333 InChI Key: MHAJPDPJQMAIIY-UHFFFAOYSA-N Sinonimo: oxydol,perhydrol,superoxol,interox,hydrogen dioxide,inhibine,peroxaan,albone,hioxyl,kastone PubChem CID: 784 ChEBI: CHEBI:16240 IUPAC Name: hydrogen peroxide SMILES: OO
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Buffer Tablets, pH 4 (Phthalate), for pH measurement, to make-up volume of 100ml, Fisher Chemical™
Buffer Tablets, pH 4 (Phthalate), for pH measurement, to make-up volume of 100ml, Fisher Chemical, White, Packaging: Glass Jar, Quantity: 50 tablets, MDL Number: 81857, Physical Form: Solid
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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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Buffer Tablets, pH 7 (Phosphate), for pH measurement, to make-up volume of 100ml, Fisher Chemical™
Buffer Tablets, pH 7 (Phosphate), for pH measurement, to make-up volume of 100ml, Fisher Chemical, White, Packaging: Glass Jar, Quantity: 50 tablets, MDL Number: 81857, Physical Form: Solid
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Tampone tecnico
Un tampone pH affidabile e versatile. Le soluzioni tampone pH Mettler Toledo™ di grado tecnico sono specificate a due cifre decimali e sono tracciabili agli standard NIST. La soluzione codificata a colori viene fornita in un pratico flacone in plastica da 250 ml completa di etichette esaustive.
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Sodium thiosulfate, 0.01N Standardized Solution, Thermo Scientific Chemicals
CAS: 7772-98-7 Formula molecolare: Na2O3S2 Molecular Weight (g/mol): 158.10 Numero MDL: MFCD00003499 InChI Key: AKHNMLFCWUSKQB-UHFFFAOYSA-L Sinonimo: sodium thiosulfate,sodium thiosulphate,disodium thiosulfate,sodium thiosulfate anhydrous,hypo,sodiumthiosulfate,chlorine cure,chlorine control,declor-it,thiosulfuric acid, disodium salt PubChem CID: 24477 IUPAC Name: disodium;dioxido-oxo-sulfanylidene-$l^{6}-sulfane SMILES: [Na+].[Na+].[O-]S([S-])(=O)=O
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Soluzioni di conducibilità
Recommended NIST traceable solutions for calibrating or verifying METTLER TOLEDO conductivity electrodes.
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