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
Filtered Search Results
Buffer, Reference Standard, pH 7.00 ± 0.01 at 25°C (Color Coded Yellow), Ricca Chemical
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CAS | 7732-18-5 |
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CAS Min % | 0.48 |
Chemical Name or Material | Buffer, Reference Standard |
CAS Max % | 0.5 |
Organic Carbon Standard, 1000 ppm C, Ricca Chemical
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CAS: 7664-38-2 Molecular Formula: C8H5KO4 Molecular Weight (g/mol): 204.222 InChI Key: IWZKICVEHNUQTL-UHFFFAOYSA-M PubChem CID: 23676735 IUPAC Name: potassium;2-carboxybenzoate SMILES: C1=CC=C(C(=C1)C(=O)O)C(=O)[O-].[K+]
PubChem CID | 23676735 |
---|---|
CAS | 7664-38-2 |
Molecular Weight (g/mol) | 204.222 |
SMILES | C1=CC=C(C(=C1)C(=O)O)C(=O)[O-].[K+] |
IUPAC Name | potassium;2-carboxybenzoate |
InChI Key | IWZKICVEHNUQTL-UHFFFAOYSA-M |
Molecular Formula | C8H5KO4 |
Buffer, Reference Standard, pH 10.00 ± 0.01 at 25°C (Color Coded Blue), Ricca Chemical
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Boiling Point | 100°C |
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Name Note | pH 10.00 ± 0.01 at 25 deg C (Color Coded Blue) |
CAS | 7732-18-5 |
Color | Blue |
Solubility Information | Miscible |
Physical Form | Liquid |
pH | 10 |
CAS Min % | 0.39 |
DOT Information | Not Regulated by DOT |
Chemical Name or Material | Buffer, Reference Standard |
CAS Max % | 0.41 |
Melting Point | 0°C |
Nitrite Nitrogen Standard, 1000 ppm N (3285 ppm NO2-), Ricca Chemical
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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
PubChem CID | 516910 |
---|---|
CAS | 7758-09-0 |
Molecular Weight (g/mol) | 85.10 |
MDL Number | MFCD00011408 |
SMILES | [K+].[O-]N=O |
IUPAC Name | potassium nitrite |
InChI Key | BXNHTSHTPBPRFX-UHFFFAOYSA-M |
Molecular Formula | KNO2 |
Buffer, Reference Standard, pH 12.00 ± 0.01 at 25°C, Ricca Chemical
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Boiling Point | 100°C |
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Color | Colorless |
Physical Form | Liquid |
CAS Min % | 0.08 |
Chemical Name or Material | Buffer, Reference Standard |
Grade | Reference Standard |
Sterility | Non-sterile |
Name Note | pH 12.00± 0.01 at 25°C |
CAS | 7732-18-5 |
Solubility Information | Miscible |
pH | 12 |
DOT Information | Not Regulated by DOT |
Shelf Life | 18 months |
CAS Max % | 0.08 |
Melting Point | 0°C |
Sodium Chloride Standard, 1.00% (w/w), Ricca Chemical
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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-]
PubChem CID | 5234 |
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CAS | 7647-14-5 |
Molecular Weight (g/mol) | 58.44 |
ChEBI | CHEBI:26710 |
MDL Number | MFCD00003477 |
SMILES | [Na+].[Cl-] |
Synonym | sodium chloride,salt,table salt,halite,saline,rock salt,common salt,sodium chloride nacl,dendritis,purex |
IUPAC Name | sodium chloride |
InChI Key | FAPWRFPIFSIZLT-UHFFFAOYSA-M |
Molecular Formula | ClNa |
Potassium Permanganate Standard, 891 mg/L (1000 ppm as Cl2), Ricca Chemical
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CAS: 7722-64-7 Molecular Formula: KMnO4 Molecular Weight (g/mol): 158.032 InChI Key: VZJVWSHVAAUDKD-UHFFFAOYSA-N PubChem CID: 516875 IUPAC Name: potassium;permanganate SMILES: [O-][Mn](=O)(=O)=O.[K+]
PubChem CID | 516875 |
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CAS | 7722-64-7 |
Molecular Weight (g/mol) | 158.032 |
SMILES | [O-][Mn](=O)(=O)=O.[K+] |
IUPAC Name | potassium;permanganate |
InChI Key | VZJVWSHVAAUDKD-UHFFFAOYSA-N |
Molecular Formula | KMnO4 |
Ammonia Nitrogen Standard, 1000 ppm N (1216 ppm NH3), Ricca Chemical
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CAS: 12125-02-9 Molecular Formula: ClH4N Molecular Weight (g/mol): 53.49 MDL Number: MFCD00011420 InChI Key: NLXLAEXVIDQMFP-UHFFFAOYSA-N PubChem CID: 25517 ChEBI: CHEBI:31206 IUPAC Name: amine hydrochloride SMILES: N.Cl
PubChem CID | 25517 |
---|---|
CAS | 12125-02-9 |
Molecular Weight (g/mol) | 53.49 |
ChEBI | CHEBI:31206 |
MDL Number | MFCD00011420 |
SMILES | N.Cl |
IUPAC Name | amine hydrochloride |
InChI Key | NLXLAEXVIDQMFP-UHFFFAOYSA-N |
Molecular Formula | ClH4N |
Buffer, Reference Standard, pH 1.00 ± 0.01 at 25°C, Ricca Chemical
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Name Note | pH 1.00± 0.01 at 25°C |
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CAS | 7732-18-5 |
Color | Colorless |
Physical Form | Liquid |
Chemical Name or Material | Buffer, Reference Standard |
Zero Oxygen Standard, for Calibration of Dissolved Oxygen Meters, Ricca Chemical
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CAS: 7791-13-1 Molecular Formula: Cl2CoH12O6 Molecular Weight (g/mol): 237.92 MDL Number: MFCD00149652 InChI Key: GFHNAMRJFCEERV-UHFFFAOYSA-L IUPAC Name: λ²-cobalt(2+) hexahydrate dichloride SMILES: O.O.O.O.O.O.[Cl-].[Cl-].[Co++]
CAS | 7791-13-1 |
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Molecular Weight (g/mol) | 237.92 |
MDL Number | MFCD00149652 |
SMILES | O.O.O.O.O.O.[Cl-].[Cl-].[Co++] |
IUPAC Name | λ²-cobalt(2+) hexahydrate dichloride |
InChI Key | GFHNAMRJFCEERV-UHFFFAOYSA-L |
Molecular Formula | Cl2CoH12O6 |
Color Standard, APHA/Hazen (Platinum-Cobalt), Color = 500, Ricca Chemical
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Name Note | Color= 500 |
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CAS | 7732-18-5 |
CAS Min % | 0.09 |
Packaging | Amber Glass Bottle |
Chemical Name or Material | Color Standard |
Grade | APHA/Hazen (Platinum-Cobalt) |
CAS Max % | 0.09 |
Glycerin (Glycerol), 50% (v/v), Ricca Chemical
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CAS: 56-81-5 Molecular Formula: C3H8O3 Molecular Weight (g/mol): 92.09 MDL Number: MFCD00004722 InChI Key: PEDCQBHIVMGVHV-UHFFFAOYSA-N Synonym: glycerol,glycerin,glycerine,1,2,3-propanetriol,glycyl alcohol,trihydroxypropane,glyceritol,propanetriol,1,2,3-trihydroxypropane,osmoglyn PubChem CID: 753 ChEBI: CHEBI:17754 IUPAC Name: propane-1,2,3-triol SMILES: OCC(O)CO
PubChem CID | 753 |
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CAS | 56-81-5 |
Molecular Weight (g/mol) | 92.09 |
ChEBI | CHEBI:17754 |
MDL Number | MFCD00004722 |
SMILES | OCC(O)CO |
Synonym | glycerol,glycerin,glycerine,1,2,3-propanetriol,glycyl alcohol,trihydroxypropane,glyceritol,propanetriol,1,2,3-trihydroxypropane,osmoglyn |
IUPAC Name | propane-1,2,3-triol |
InChI Key | PEDCQBHIVMGVHV-UHFFFAOYSA-N |
Molecular Formula | C3H8O3 |
Sodium Thiosulfate, 0.0100 N (N/100), Ricca Chemical
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CAS: 10102-17-7 Molecular Formula: H10Na2O8S2 Molecular Weight (g/mol): 248.17 InChI Key: PODWXQQNRWNDGD-UHFFFAOYSA-L Synonym: sodium thiosulfate pentahydrate,ametox,sodium thiosulfate, pentahydrate,antichlor,tinver,disodium thiosulfate pentahydrate,unii-hx1032v43m,ccris 3952,thiosulfuric acid, disodium salt, pentahydrate,sodium hyposulfite pentahydrate PubChem CID: 61475 ChEBI: CHEBI:32150 IUPAC Name: disodium pentahydrate sulfanidesulfonate SMILES: O.O.O.O.O.[Na+].[Na+].[O-]S([S-])(=O)=O
PubChem CID | 61475 |
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CAS | 10102-17-7 |
Molecular Weight (g/mol) | 248.17 |
ChEBI | CHEBI:32150 |
SMILES | O.O.O.O.O.[Na+].[Na+].[O-]S([S-])(=O)=O |
Synonym | sodium thiosulfate pentahydrate,ametox,sodium thiosulfate, pentahydrate,antichlor,tinver,disodium thiosulfate pentahydrate,unii-hx1032v43m,ccris 3952,thiosulfuric acid, disodium salt, pentahydrate,sodium hyposulfite pentahydrate |
IUPAC Name | disodium pentahydrate sulfanidesulfonate |
InChI Key | PODWXQQNRWNDGD-UHFFFAOYSA-L |
Molecular Formula | H10Na2O8S2 |
Sodium Thiosulfate, 0.100 N (N/10), Ricca Chemical
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CAS: 10102-17-7 Molecular Formula: H10Na2O8S2 InChI Key: PODWXQQNRWNDGD-UHFFFAOYSA-L Synonym: sodium thiosulfate pentahydrate,ametox,sodium thiosulfate, pentahydrate,antichlor,tinver,disodium thiosulfate pentahydrate,unii-hx1032v43m,ccris 3952,thiosulfuric acid, disodium salt, pentahydrate,sodium hyposulfite pentahydrate PubChem CID: 61475 ChEBI: CHEBI:32150
PubChem CID | 61475 |
---|---|
CAS | 10102-17-7 |
ChEBI | CHEBI:32150 |
Synonym | sodium thiosulfate pentahydrate,ametox,sodium thiosulfate, pentahydrate,antichlor,tinver,disodium thiosulfate pentahydrate,unii-hx1032v43m,ccris 3952,thiosulfuric acid, disodium salt, pentahydrate,sodium hyposulfite pentahydrate |
InChI Key | PODWXQQNRWNDGD-UHFFFAOYSA-L |
Molecular Formula | H10Na2O8S2 |
Water Hardness Buffer, Odorless, Ricca Chemical
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Name Note | Odorless |
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CAS | 7791-18-6 |
Color | Colorless to Yellow |
Packaging | Natural Poly Bottle |
Physical Form | Liquid |
CAS Min % | 0.18 |
Chemical Name or Material | Water Hardness Buffer |
CAS Max % | 0.19 |