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 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
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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 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 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 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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Tris(hydroxymethyl)aminomethane, 99.8%, ACS reagent, Thermo Scientific Chemicals
CAS: 77-86-1 Formula molecolare: C4H11NO3 Molecular Weight (g/mol): 121.136 Numero MDL: MFCD00004679 InChI Key: LENZDBCJOHFCAS-UHFFFAOYSA-N Sinonimo: 2-Amino-2-(hydroxymethyl)-1, 3-propanediol,TRIS,Tris buffer,Tromethamine,Tromethane PubChem CID: 6503 ChEBI: CHEBI:9754 IUPAC Name: 2-amino-2-(hydroxymethyl)propane-1,3-diol SMILES: C(C(CO)(CO)N)O
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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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Soluzioni di conducibilità
Recommended NIST traceable solutions for calibrating or verifying METTLER TOLEDO conductivity electrodes.
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