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
ACETATE BUFFER SOLUTION PH 4.65, SODIUM ACETATE / ACETIC ACID, Honeywell Fluka™
SODIUM ACETATE / ACETIC ACID
Buffer solution pH 9.0 (20°C), Buffer solution pH 9.0 (20°C), Honeywell Fluka™
CAS: 1336-21-6 Molecular Formula: H5NO Molecular Weight (g/mol): 35.05 InChI Key: VHUUQVKOLVNVRT-UHFFFAOYSA-N PubChem CID: 14923 ChEBI: CHEBI:18219 SMILES: N.O
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Phosphate Buffer Solution, pH 7, Honeywell™ Fluka™
CAS: 7732-18-5
Buffer Solution pH 7.0 (20°C), Potassium Dihydrogen Phosphate / Disodium Hydrogen Phosphate, Traceable to SRM from NIST, with Fungicide, Honeywell Fluka™
CAS: 1336-21-6 Molecular Formula: H5NO Molecular Weight (g/mol): 35.05 InChI Key: VHUUQVKOLVNVRT-UHFFFAOYSA-N PubChem CID: 14923 ChEBI: CHEBI:18219 SMILES: N.O
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Buffer concentrate pH 9.00, Buffer concentrate pH 9.00, Honeywell Fluka™
for 500 ml buffer solution, sodium tetraborate / hydrochloric acid
Buffer concentrate pH 8.00, Buffer concentrate pH 8.00, Honeywell Fluka™
for 500 ml buffer solution, sodium tetraborate / hydrochloric acid
Buffer concentrate pH 9.00, Buffer concentrate pH 9.00, Honeywell Fluka™
for 500 ml buffer solution, sodium tetraborate / hydrochloric acid
Buffer solution pH 4.0 (20°C), Red colored, citric acid / sodium hydroxide / sodium chloride solution, with fungicide, Honeywell Fluka™
CAS: 1336-21-6 Molecular Formula: H5NO Molecular Weight (g/mol): 35.05 MDL Number: MFCD00066650 InChI Key: VHUUQVKOLVNVRT-UHFFFAOYSA-N PubChem CID: 14923 ChEBI: CHEBI:18219 SMILES: N.O
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Hydrogen peroxide solution, PERDROGEN™ 30% H2O2 H2O2 (w/w) puriss. p.a., Reag. ISO, Reag. Ph. Eur., Honeywell Fluka™
CAS: 7722-84-1 Molecular Formula: H2O2 Molecular Weight (g/mol): 34.014 MDL Number: MFCD00011333 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
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Buffer solution, 12.0, di-sodium hydrogen phosphate / sodium hydroxide solution, Honeywell Fluka™
CAS: 1336-21-6 Molecular Formula: H5NO Molecular Weight (g/mol): 35.05 MDL Number: MFCD00066650 InChI Key: VHUUQVKOLVNVRT-UHFFFAOYSA-N PubChem CID: 14923 ChEBI: CHEBI:18219 IUPAC Name: azanium;hydroxide SMILES: N.O
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Ammonia buffer solution, Ammonium chloride / ammonia, pH 10, for complexometry, Honeywell Fluka™
Ammonium chloride / ammonia, pH 10, for complexometry
Thermo Scientific Chemicals TRIS-buffered saline (TBS, 20X) pH 7.4
CAS: 77-86-1 Molecular Formula: C4H11NO3 Molecular Weight (g/mol): 121.136 MDL Number: MFCD00132476 InChI Key: LENZDBCJOHFCAS-UHFFFAOYSA-N PubChem CID: 6503 ChEBI: CHEBI:9754 IUPAC Name: 2-amino-2-(hydroxymethyl)propane-1,3-diol SMILES: C(C(CO)(CO)N)O
Buffer Solution Ph 2.0 (20 °C), Honeywell Fluka™
Citric acid / hydrochloric acid / sodium chloride, with fungicide, traceable to SRM from NIST and PTB
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