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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

 

Karl Fischer Buffers and Reagents (34)
General Chemistry Solutions (7)
Life Science Buffers (1)
Electrochemistry Buffers (1)

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1 – 15 of 25 results
2

HYDRANAL™-Buffer Base, Honeywell Fluka™

Liquid buffer medium for Karl Fischer titration in alkaline samples (based on salicylic acid)

CAS 121-44-8
MDL Number MFCD00147178
Health Hazard 2 P210-P280-P304 + P340 + P312-P305 + P351 + P338 + P310-P370 + P378-P403 + P235
Flash Point 11°C (51.8°F)
UN Number UN1993BE
Chemical Name or Material HYDRANAL™-Buffer Base
3

HYDRANAL™ - Coulomat E, Reagent for coulometric KF titration (ethanol-based), for cells with and without diaphragm, Honeywell Fluka™

Anolyte for coulometric Karl Fischer titration (ethanol-based), for cells with and without diaphragm

CAS 67-56-1
Health Hazard 2 P201-P210-P280-P308 + P313-P370 + P378-P403 + P235
6

Karl Fischer Reagent Solution A, for pyridine-based volumetric KF titration (pyridine, sulfur dioxide, methanol), Honeywell™ Fluka™

for pyridine-based volumetric Karl Fischer titration (pyridine, sulfur dioxide, methanol)

Health Hazard 2 P210-P260-P280-P301 + P310 + P330-P303 + P361 + P353-P304 + P340 + P310-P305 + P351 + P338-P308 + P311-P403 + P233
10

HYDRANAL™-Solvent E, Honeywell Fluka™

Medium for volumetric two-component Karl Fischer titration (ethanol-based)

CAS 7446-09-5
MDL Number MFCD01867183
Health Hazard 2 P201-P210-P280-P308 + P313-P370 + P378-P403 + P235
Flash Point 12°C (53.6°F)
UN Number UN1170
Chemical Name or Material HYDRANAL™-Solvent E
Density 0.90g/mL
11

HYDRANAL™ - NEXTGEN Coulomat C-FA, Honeywell Fluka™

Catholyte for coulometric Karl Fischer titration of ketones and Li-ion battery electrolytes, Acetonitrile-based, free of alcohols (free of CMR substances).

CAS 75-05-8
Color Orange
Solubility Information Soluble in water
Physical Form Liquid
Packaging Ampoule
CAS Min % ≥2.00
pH 5.5
Flash Point 12°C to 13°C
UN Number UN2924
Chemical Name or Material HYDRANAL™ - NEXTGEN Coulomat C-FA
Recommended Storage Room Temperature
Shelf Life 720 days
Density 0.906 g/cm3
12

HYDRANAL™ - NEXTGEN Coulomat AG-FI, Honeywell Fluka™

Anolyte for coulometric Karl Fischer titrations, for cells with and without diaphragm

Boiling Point 64°C to 65°C (Methanol)
CAS 67-56-1
Color Yellow
Solubility Information Completely Miscible in Water
Physical Form Liquid
Packaging Glass Bottle
CAS Min % ≥60%
Flash Point 14°C
UN Number UN1230
Chemical Name or Material HYDRANAL™ - NEXTGEN Coulomat AG-FI
Recommended Storage Room Temperature
Density 0.893 g/cm3 (at 20°C)
Melting Point -98°C (Methanol)
13

HYDRANAL™-CompoSolver E, Honeywell Fluka™

Medium for volumetric one-component Karl Fischer titration (ethanol-based)

CAS 64-17-5
Health Hazard 2 P201-P210-P280-P308 + P313-P370 + P378-P403 + P235
Flash Point 12°C (53.6°F)
UN Number UN1170
Chemical Name or Material HYDRANAL™-CompoSolver E
Density 0.80g/mL
14

HYDRANAL™ - NEXTGEN Solvent FI, Honeywell Fluka™

Medium for volumetric, two-component Karl Fischer titrations

CAS 147-85-3
Solubility Information Completely Miscible in Water
Physical Form Liquid
Packaging Glass Bottle
CAS Min % ≥0.10%
pH 5 to 6
Flash Point 11°C
UN Number UN1230
Chemical Name or Material HYDRANAL™ - NEXTGEN Solvent FI
Recommended Storage Room Temperature
Density 0.9 g/cm3 (at 20°C)
CAS Max % ≤5%