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
Ricca Chemical Company Potassium Chloride, Saturated, Approximately 4 M, Ricca Chemical
CAS: 7447-40-7 Molecular Formula: ClK Molecular Weight (g/mol): 74.55 MDL Number: MFCD00011360 InChI Key: WCUXLLCKKVVCTQ-UHFFFAOYSA-M Synonym: potassium chloride,enseal,muriate of potash,klotrix,sylvite,slow-k,potassium chloride kcl,klor-con,chlorvescent,kalitabs PubChem CID: 4873 ChEBI: CHEBI:32588 IUPAC Name: potassium chloride SMILES: [Cl-].[K+]
Ricca Chemical Company Potassium Chloride Reference Solution D, 146.93 μS/cm at 25°C, 0.001 M, Ricca Chemical
CAS: 7447-40-7 Molecular Formula: ClK Molecular Weight (g/mol): 74.55 MDL Number: MFCD00011360 InChI Key: WCUXLLCKKVVCTQ-UHFFFAOYSA-M PubChem CID: 4873 ChEBI: CHEBI:32588 IUPAC Name: potassium chloride SMILES: [Cl-].[K+]
Ricca Chemical Company Iodine (Iodine-Iodide), 0.100 N (N/10), Ricca Chemical
CAS: 7553-56-2 Molecular Formula: I2 Molecular Weight (g/mol): 253.81 MDL Number: MFCD00011355 MFCD00164163 InChI Key: PNDPGZBMCMUPRI-UHFFFAOYSA-N Synonym: iodine,diiodine,iodine crystals,iodine sublimed,tincture iodine,vistarin,eranol,iodio,iodine solution,iode PubChem CID: 807 ChEBI: CHEBI:17606 IUPAC Name: diiodine SMILES: II
Ricca Chemical Company 1,10-Phenanthroline, 0.1% (w/v), Ricca Chemical
CAS: 5144-89-8 Molecular Formula: C12H10N2O Molecular Weight (g/mol): 198.23 MDL Number: MFCD00149973 InChI Key: PPQJCISYYXZCAE-UHFFFAOYSA-N PubChem CID: 21226 IUPAC Name: 1,10-phenanthroline hydrate SMILES: O.C1=CN=C2C(C=CC3=CC=CN=C23)=C1
Ricca Chemical Company Sodium Hydroxide, 5.00 N, Ricca Chemical
CAS: 1310-73-2 Molecular Formula: HNaO Molecular Weight (g/mol): 39.997 InChI Key: HEMHJVSKTPXQMS-UHFFFAOYSA-M Synonym: sodium hydroxide,caustic soda,sodium hydrate,white caustic,soda lye,aetznatron,ascarite,sodium hydroxide na oh,sodium hydroxide solution,soda, caustic PubChem CID: 14798 ChEBI: CHEBI:32145 IUPAC Name: sodium;hydroxide SMILES: [OH-].[Na+]
Ricca Chemical Company Cyanide Standard, 1000 ppm CN-, Ricca Chemical
CAS: 151-50-8 Molecular Formula: CKN Molecular Weight (g/mol): 65.116 InChI Key: NNFCIKHAZHQZJG-UHFFFAOYSA-N PubChem CID: 9032 IUPAC Name: potassium;cyanide SMILES: [C-]#N.[K+]
Ricca Chemical Company Chloride Standard, 1000 ppm Cl- (0.0282 N), Ricca Chemical
CAS: 7647-14-5 Molecular Formula: ClNa Molecular Weight (g/mol): 58.44 MDL Number: MFCD00003477 InChI Key: FAPWRFPIFSIZLT-UHFFFAOYSA-M PubChem CID: 5234 ChEBI: CHEBI:26710 IUPAC Name: sodium chloride SMILES: [Na+].[Cl-]
Ricca Chemical Company Iron AA Standard, 1000 ppm Fe in 3% HCl, Ricca Chemical
CAS: 7439-89-6 Molecular Formula: Fe Molecular Weight (g/mol): 55.85 MDL Number: MFCD00010999 InChI Key: XEEYBQQBJWHFJM-UHFFFAOYSA-N PubChem CID: 23925 ChEBI: CHEBI:82664 IUPAC Name: iron SMILES: [Fe]
Ricca Chemical Company EDTA Titrant, 0.100 M (M/10), Ricca Chemical
CAS: 6381-92-6 Molecular Formula: C10H18N2Na2O10 Molecular Weight (g/mol): 372.24 MDL Number: MFCD00150037,MFCD00003541 InChI Key: OVBJJZOQPCKUOR-UHFFFAOYSA-L Synonym: edta disodium salt,cal-ex decalcifier,buffer solution, ph 10.00,sodium di ethylenediamine tetraacetate dihydrate,ethylenediamine tetraacetic acid, disodium salt dihydrate,ethylenediamine tetraacetic acid, disodium salt, standard solution,sodium di ethylenediamine tetraacetate standard solution,ethylenedinitrilo tetraacetic acid disodium, dihydrate, reagent, acs PubChem CID: 44120005 IUPAC Name: disodium 2-({2-[(carboxylatomethyl)(carboxymethyl)amino]ethyl}(carboxymethyl)amino)acetate dihydrate SMILES: O.O.[Na+].[Na+].OC(=O)CN(CCN(CC(O)=O)CC([O-])=O)CC([O-])=O
Ricca Chemical Company Potassium Permanganate, 0.100 N (N/10), 0.0200 M (M/50), Ricca Chemical
CAS: 7722-64-7 Molecular Formula: KMnO4 Molecular Weight (g/mol): 158.032 InChI Key: VZJVWSHVAAUDKD-UHFFFAOYSA-N Synonym: potassium permanganate,chameleon mineral,condy's crystals,argucide,cairox,permanganate of potash,insta-perm,walko tablets,algae-k,solo san soo PubChem CID: 516875 IUPAC Name: potassium;permanganate SMILES: [O-][Mn](=O)(=O)=O.[K+]
Ricca Chemical Company Potassium Chloride Conductivity Standard, 84 μS/cm at 25°C, Ricca Chemical
CAS: 7447-40-7 Molecular Formula: ClK Molecular Weight (g/mol): 74.55 MDL Number: MFCD00011360 InChI Key: WCUXLLCKKVVCTQ-UHFFFAOYSA-M PubChem CID: 4873 ChEBI: CHEBI:32588 IUPAC Name: potassium chloride SMILES: [Cl-].[K+]
Ricca Chemical Company Nitrite Nitrogen Standard, 1000 ppm N (3285 ppm NO2-), Ricca Chemical
CAS: 7758-09-0 Molecular Formula: KNO2 Molecular Weight (g/mol): 85.10 MDL Number: MFCD00011408 InChI Key: BXNHTSHTPBPRFX-UHFFFAOYSA-M PubChem CID: 516910 IUPAC Name: potassium nitrite SMILES: [K+].[O-]N=O
Ricca Chemical Company Phosphate Phosphorus Standard, 100 ppm P (306.6 ppm PO43-), Ricca Chemical
CAS: 7778-77-0 Molecular Formula: H2KO4P Molecular Weight (g/mol): 136.08 MDL Number: MFCD00011401 MFCD00147253 InChI Key: GNSKLFRGEWLPPA-UHFFFAOYSA-M PubChem CID: 516951 ChEBI: CHEBI:63036 IUPAC Name: potassium dihydrogen phosphate SMILES: [K+].OP(O)([O-])=O
Ricca Chemical Company Sulfosalicylic Acid, 3% (w/v), Ricca Chemical
CAS: 97-05-2 Molecular Formula: C7H6O6S Molecular Weight (g/mol): 218.179 InChI Key: YCPXWRQRBFJBPZ-UHFFFAOYSA-N Synonym: 5-sulfosalicylic acid,sulfosalicylic acid,5-sulphosalicylic acid,salicylsulfonic acid,benzoic acid, 2-hydroxy-5-sulfo,salicylic acid, sulfo,benzoic acid, 2-hydroxysulfo,sulphosalicylic acid,salicylic acid, 5-sulfo,2-hydroxybenzoic-5-sulfonic acid PubChem CID: 7322 ChEBI: CHEBI:68555 IUPAC Name: 2-hydroxy-5-sulfobenzoic acid SMILES: C1=CC(=C(C=C1S(=O)(=O)O)C(=O)O)O