Honeywell Hydranal

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Volumetric Karl Fischer Titration

Advantages of Hydranal one-component reagents:

New formulation of Hydranal-Composite reagents improves stability and eliminates the formation of crystals
Hydranal-Methanol Rapid contains accelerators to speed up titration
Hydranal-Medium K suitable for methanol-reacting compounds, e.g. ketones and aldehydes
Unlimited water capacity
Convenient and easy to use
The greatest flexibility in working media selections
Long shelf life (3 years)

Improved Composition

Hydranal-Composite contains all the reactants, including iodine, sulfur dioxide, and the bases imidazole and 2-methylimidazole, dissolved in diethylene glycol monoethyl ether (DEGEE). Adding 2-methylimidazole in addition to imidazole improves stability and eliminates the formation of crystals which can interfere with the titrator’s performance.

Hydranal-Composite Hydranal-Methanol Rapid Hydranal-Medium K View All Products

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Volumetric Karl Fischer Titration

Advantages of Hydranal two-component reagents:

High titration speed
Ideal accuracy for small amounts of water
High buffer capacity
Exact and stable titre
E-type reagents based on ethanol for safer titrations
Long shelf life (3 years for titrants, 5 years for solvents)

Composition

In two-component reagents, the Karl Fischer reactants are separated into two solutions: the titrant and the solvent. Hydranal-Titrant contains iodine dissolved in an alcohol with a precisely defined concentration. Hydranal-Solvent is an alcoholic solution of sulfur dioxide and imidazole.

The alcohol is either methanol for standard reagents or ethanol for E-type reagents.

Hydranal E-Type reagents View All Products

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Coulometric Karl Fischer Titration

Coulometric reagents based on different solvent compositions serve to support the broad variety of samples analyzed. Some working techniques are supported by special reagents:

Karl Fischer ovens by Coulomat AG-Oven
Cells without diaphragm by Coulomat AD

Advantages of Hydranal coulometric reagents:

Easy to use
High accuracy for trace amounts of water
Stable conditions of the titration vessel
Broad product range
Long shelf life (up to 5 years)

Hydranal-Coulomat A-type or E-type reagents are used as anolytes. The anolytes contain iodide and a sulfur dioxide/imidazole buffer in suitable solvents.

Hydranal-Coulomat CG reagents are used as catholytes.

Coulomat AG-Oven Coulomat AD Coulomat A-Type Reagents Coulomat E-Type Reagents Coulomat CG View All Products

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Water Standards

The Hydranal family offers verified water standards with exactly confirmed water content for:

Titre determination
Monitoring precision and accuracy
Validation and inspection of Karl Fischer titrators according to ISO, GMP, GLP, and FDA guidelines

Advantages of Hydranal water standards:

Broad product range for volumetric and coulometric Karl Fischer applications
Manufactured according to current ISO requirements
Verified against NIST SRM 2890
Long shelf life (up to 5 years)
Convenient packaging
Supplied with detailed instructions for use
Certificate of Analysis with exact water content
Hydranal introduced the very first commercially available CRM (Certified Reference Material) Water Standards thanks to double accreditation (ISO/IEC 17025 and ISO Guide 34).

Unique water standards include:

CRM Water Standards
0.1 PC Water Standard with improved stability

0.1 PC Water Standard View All Products

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Other Karl Fischer Titration Products

Hydranal offers a wide range of additional KF titration products:

Solubilizers (formamide dry, chloroform, xylene) to aid working conditions and enable a direct titration of the sample
Buffers to neutralize acidic or basic samples to reach an ideal pH value or suppress side reactions
Moisture test kits to determine the amount of water in various samples while being in the field or away from a KF titrator

Formamide Dry Chloroform Xylene Buffers Moisture Test Kits