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
Fisher Science Education™ Sodium Chloride Solution 1M
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-]
Fisher Science Education™ Bromine Water
CAS: 7726-95-6 Molecular Formula: Br Molecular Weight (g/mol): 79.91 InChI Key: CPELXLSAUQHCOX-UHFFFAOYSA-M Synonym: bromine,dibromine,brom,bromine solution,brome,bromo,broom,bromine water,bromo italian,bromo spanish PubChem CID: 24408 ChEBI: CHEBI:29224 IUPAC Name: bromide SMILES: [Br-]
Fisher Science Education™ Hydrogen Peroxide Solution, 3%
CAS: 7722-84-1 Molecular Formula: H2O2 Molecular Weight (g/mol): 34.014 InChI Key: MHAJPDPJQMAIIY-UHFFFAOYSA-N Synonym: oxydol,perhydrol,superoxol,interox,hydrogen dioxide,inhibine,peroxaan,albone,hioxyl,kastone PubChem CID: 784 ChEBI: CHEBI:16240 IUPAC Name: hydrogen peroxide SMILES: OO
Fisher Science Education™ Silver Nitrate Solution, 0.5M
CAS: 7732-18-5 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
Fisher Science Education™ Sodium Nitrate Solution
CAS: 7631-99-4 Molecular Formula: NNaO3 Molecular Weight (g/mol): 84.99 MDL Number: MFCD00011119 InChI Key: VWDWKYIASSYTQR-UHFFFAOYSA-N Synonym: sodium nitrate,chile saltpeter,nitrate of soda,cubic niter,etabisulfite,nitratine,soda niter,sodium saltpeter,nitric acid, sodium salt,sodium i nitrate 1:1 PubChem CID: 24268 ChEBI: CHEBI:63005 IUPAC Name: sodium nitrate SMILES: [Na+].[O-][N+]([O-])=O
Fisher Science Education™ Tris(hydroxymethyl) Aminomethane
CAS: 77-86-1 Molecular Formula: C4H11NO3 Molecular Weight (g/mol): 121.136 InChI Key: LENZDBCJOHFCAS-UHFFFAOYSA-N Synonym: THAM,Tris PubChem CID: 6503 ChEBI: CHEBI:9754 IUPAC Name: 2-amino-2-(hydroxymethyl)propane-1,3-diol SMILES: C(C(CO)(CO)N)O