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 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 Nitrate Nitrogen Standard, 1000 ppm N (4427 ppm NO3-), Ricca Chemical
CAS: 7757-79-1 Molecular Formula: KNO3 Molecular Weight (g/mol): 101.10 MDL Number: MFCD00011409 InChI Key: FGIUAXJPYTZDNR-UHFFFAOYSA-N PubChem CID: 24434 ChEBI: CHEBI:63043 IUPAC Name: potassium nitrate SMILES: [K+].[O-][N+]([O-])=O
Ricca Chemical Company Fluoride Standard, 1000 ppm F-, Ricca Chemical
CAS: 7681-49-4 Molecular Formula: FNa Molecular Weight (g/mol): 41.99 MDL Number: MFCD00003524 InChI Key: PUZPDOWCWNUUKD-UHFFFAOYSA-M PubChem CID: 5235 ChEBI: CHEBI:28741 IUPAC Name: sodium fluoride SMILES: [F-].[Na+]
Ricca Chemical Company Sodium Carbonate, 0.100 N (N/10), Ricca Chemical
CAS: 497-19-8 Molecular Formula: CNa2O3 Molecular Weight (g/mol): 105.99 MDL Number: MFCD00003494 InChI Key: CDBYLPFSWZWCQE-UHFFFAOYSA-L Synonym: sodium carbonate,disodium carbonate,soda ash,carbonic acid disodium salt,calcined soda,sodium carbonate, anhydrous,carbonic acid, disodium salt,washing soda,sodiumcarbonate,solvay soda PubChem CID: 10340 ChEBI: CHEBI:29377 IUPAC Name: disodium carbonate SMILES: [Na+].[Na+].[O-]C([O-])=O
Ricca Chemical Company Potassium Antimonyl Tartrate, 0.2743% (w/v) (1.3715 g/500 mL), Ricca Chemical
CAS: 11071-15-1 Molecular Formula: C8H4K2O12Sb2 Molecular Weight (g/mol): 613.83 InChI Key: GUJUCWZGYWASLH-SOMOIXMJSA-J
Ricca Chemical Company Ferric Chloride, 0.025% (w/v), Ricca Chemical
CAS: 10025-77-1 Molecular Formula: Cl3FeH12O6 Molecular Weight (g/mol): 270.29 MDL Number: MFCD00149712 InChI Key: NQXWGWZJXJUMQB-UHFFFAOYSA-K Synonym: Ferric chloride hexahydrate,Iron Trichloride,Perchlorure de Fer PubChem CID: 24380 ChEBI: CHEBI:30808 IUPAC Name: iron(3+) hexahydrate trichloride SMILES: O.O.O.O.O.O.[Cl-].[Cl-].[Cl-].[Fe+3]
Ricca Chemical Company Potassium Hydroxide, 0.100 N (N/10) in Isopropyl Alcohol, Ricca Chemical
CAS: 1310-58-3 Molecular Formula: HKO Molecular Weight (g/mol): 56.11 MDL Number: MFCD00003553 InChI Key: KWYUFKZDYYNOTN-UHFFFAOYSA-M Synonym: potassium hydroxide,caustic potash,potash lye,potassium hydrate,hydroxyde de potassium,potassa,potasse caustique,potassium hydroxide k oh,potassium hydroxide solution,caswell no. 693 PubChem CID: 14797 ChEBI: CHEBI:32035 IUPAC Name: potassium hydroxide SMILES: [OH-].[K+]
Iodine (Iodine-Iodide), 0.0100 N (N/100), 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 Sodium Chloride, 5% (w/v), Ricca Chemical
CAS: 7647-14-5 Molecular Formula: ClNa Molecular Weight (g/mol): 58.44 MDL Number: MFCD00003477 InChI Key: FAPWRFPIFSIZLT-UHFFFAOYSA-M Synonym: sodium chloride,salt,table salt,halite,saline,rock salt,common salt,sodium chloride nacl,dendritis,purex PubChem CID: 5234 ChEBI: CHEBI:26710 IUPAC Name: sodium chloride SMILES: [Na+].[Cl-]
Ricca Chemical Company Barium Chloride TS/RS, 12% (w/v), Ricca Chemical
CAS: 10326-27-9 Molecular Formula: BaCl2H4O2 Molecular Weight (g/mol): 244.26 MDL Number: MFCD00149154 InChI Key: PWHCIQQGOQTFAE-UHFFFAOYSA-L Synonym: barium chloride dihydrate,bacl2.2h2o,barium 2+ dihydrate dichloride,barium 2+ dichloride dihydrate,acmc-20alrc,dsstox_cid_131,barium chloride, acs,dsstox_rid_75389,dsstox_gsid_20131,ksc174q7d PubChem CID: 5284346 ChEBI: CHEBI:86153 IUPAC Name: barium(2+) dihydrate dichloride SMILES: O.O.[Cl-].[Cl-].[Ba++]
Ricca Chemical Company Chlorine Water, Saturated, Approximately 0.3% (w/v), Ricca Chemical
CAS: 7782-50-5 Molecular Formula: Cl2 Molecular Weight (g/mol): 70.9 InChI Key: KZBUYRJDOAKODT-UHFFFAOYSA-N Synonym: chlorine,bertholite,chloor,cloro,chlorine gas,chlorine mol.,chlore french,cloro italian,chloor dutch,chlor german PubChem CID: 24526 ChEBI: CHEBI:29310 IUPAC Name: molecular chlorine SMILES: ClCl
Ricca Chemical Company Silver Nitrate, 0.100 N (N/10), Ricca Chemical
CAS: 7761-88-8 Molecular Formula: AgNO3 Molecular Weight (g/mol): 169.87 MDL Number: MFCD00003414 InChI Key: SQGYOTSLMSWVJD-UHFFFAOYSA-N Synonym: silver nitrate,silvernitrate,lunar caustic,silbernitrat,argenti nitras,nitrate d'argent,nitric acid silver i salt,silver mononitrate,silver i nitrate,argerol PubChem CID: 24470 ChEBI: CHEBI:32130 IUPAC Name: silver(1+) nitrate SMILES: [Ag+].[O-][N+]([O-])=O
Ricca Chemical Company Sodium Chloride, 0.9% (w/v), Isotonic Saline, Ricca Chemical
CAS: 7647-14-5 Molecular Formula: ClNa Molecular Weight (g/mol): 58.44 MDL Number: MFCD00003477 InChI Key: FAPWRFPIFSIZLT-UHFFFAOYSA-M Synonym: sodium chloride,salt,table salt,halite,saline,rock salt,common salt,sodium chloride nacl,dendritis,purex PubChem CID: 5234 ChEBI: CHEBI:26710 IUPAC Name: sodium chloride SMILES: [Na+].[Cl-]