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
HYDRANAL™ - Composite 5, Honeywell Fluka™
Titrating agent for volumetric, one-component Karl Fischer titrations (Methanol-free)
HYDRANAL™-Water Standard KF-Oven, 150-160°C, Honeywell Fluka™
Standard for Karl Fischer oven check (water content ∼5.0%, exact value on report of analysis)
HYDRANAL™-Sodium tartrate dihydrate, Honeywell Fluka™
Test substance for volumetric Karl Fischer titration (water content ∼15.66%, exact value on report of analysis)
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
Promotions are available
ACETATE BUFFER SOLUTION PH 4.65, SODIUM ACETATE / ACETIC ACID, Honeywell Fluka™
SODIUM ACETATE / ACETIC ACID
Buffer solution pH 7.0 (20°C), Green colored, potassium dihydrogen phosphate / disodium hydrogen phosphate, 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 IUPAC Name: azanium;hydroxide SMILES: N.O
Promotions are available
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
Promotions are available
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
Promotions are available
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
Promotions are available
HYDRANAL™ - Medium K, Honeywell Fluka™
Medium for volumetric one-component Karl Fischer titration in aldehydes and ketones (methanol free).
Buffer solution pH 4.0 (20°C), With fungicide, citric acid / sodium hydroxide / sodium chloride solution, traceable to SRM from NIST, 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
Promotions are available
HYDRANAL™-Standard 5.0, Honeywell Fluka™
Test solution for rough check of volumetric KF equipment.