Karl Fischer Titration

Reagents & Chemicals

The term "Karl Fischer Titration" can be traced back to the beginnings of the quantitive determination of water in 1935. The "Karl Fischer method" was practiced for the first time by German chemist Karl Fischer and manifested itself in several pharmacopoeias since then.

Initially water was titrated with an anhydrous methanolic solution of iodine, sulfur dioxide and pyridine in this method. In 1982 Eugen Scholz changed this procedure by adding basic components such as imidazole or acidic components such as salicylic acid. This modified method is still an essential part of everyday laboratory work.

In the Analytics-Shop you will find numerous reagents for Karl Fischer titration, such as the product line Hydranal by manufacturer Honeywell. It includes, for example, various one- and two-component reagents for volumetric titration, reagents for coulometric titration with and without diaphragm, ethanol-based reagents and much more.

Should you ever not be able to find the correct item or have any questions concerning our products, do not hesitate to contact us - our expert team is always happy to help.

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Product Image of HYDRANAL Solver (Crude)oil reag., volum. one-and two-comp. KF Tit. in oils, Glass Bottle, 1 L
HYDRANAL Solver (Crude)oil reag., volum. one-and two-comp. KF Tit. in oils, Glass Bottle, 1 L
Item number: FL34697-1L
Brand: Fluka

In stock

€113.92
Product Image of HYDRANAL Water Standard Oil Oil-based standard, Karl Fischer titrat. (water content <50 ppm), 80ml
HYDRANAL Water Standard Oil Oil-based standard, Karl Fischer titrat. (water content <50 ppm), 80ml
Item number: FL34694-80ML
Brand: Fluka

In stock

€146.04
Product Image of HYDRANAL Molecular sieve 0.3 nm Drying agent for air and gases for KF titration, Glass Bottle, 250 g
HYDRANAL Molecular sieve 0.3 nm Drying agent for air and gases for KF titration, Glass Bottle, 250 g
Item number: FL34241-250G
Brand: Fluka
€73.29
Product Image of HYDRANAL - Benzoic acid, Buffer substance for Karl Fischer titration, Plastic Bottle, 500 g
HYDRANAL - Benzoic acid, Buffer substance for Karl Fischer titration, Plastic Bottle, 500 g
Item number: FL32035-500G
Brand: Fluka

In stock

€78.24
Product Image of Water standard 5 mg/ml (1 ml contains 5 mg H2O) apura, 250 ml
Water standard 5 mg/ml (1 ml contains 5 mg H2O) apura, 250 ml
Item number: MC1092590250
Brand: Merck
€62.18 €64.10
Product Image of CombiCoulomat fritless Karl Fischer reagent for coulometric water determination, 2,5 L, for cells with and without diaphragm apura
CombiCoulomat fritless Karl Fischer reagent for coulometric water determination, 2,5 L, for cells with and without diaphragm apura
Item number: MC1092572500
Brand: Merck
€559.69 €577.00
Product Image of CombiCoulomat fritless Karl Fischer reagent for coulometric water determination, 500 ml, for cells with and without diaphragm apura
CombiCoulomat fritless Karl Fischer reagent for coulometric water determination, 500 ml, for cells with and without diaphragm apura
Item number: MC1092570500
Brand: Merck
€127.07 €131.00
Product Image of CombiCoulomat frit Karl Fischer reagent for the coulometric water determination, 500 ml, for cells with diaphragm apura
CombiCoulomat frit Karl Fischer reagent for the coulometric water determination, 500 ml, for cells with diaphragm apura
Item number: MC1092550500
Brand: Merck
€100.88 €104.00
Product Image of Sodium tartrate dihydrate Water standard for volumetric Karl Fischer Titration, 100 g, (volumetric standard) apura
Sodium tartrate dihydrate Water standard for volumetric Karl Fischer Titration, 100 g, (volumetric standard) apura
Item number: MC1066640100
Brand: Merck
€65.18 €67.20
Product Image of Karl-Fischer reagent for pyridine-based volumetric one-component KF titration, Glass Bottle, 6 x 1L
Karl-Fischer reagent for pyridine-based volumetric one-component KF titration, Glass Bottle, 6 x 1L
Item number: FL36115-6X1L
Brand: Fluka

In stock

€882.69
Product Image of HYDRANAL Standard sodium tartrate dihydrate, KF Tit. (water ~15.66%), Glass Bottle, 6x25 g
HYDRANAL Standard sodium tartrate dihydrate, KF Tit. (water ~15.66%), Glass Bottle, 6x25 g
Item number: FL34696-6X25G
Brand: Fluka

In stock

€277.28
Product Image of HYDRANAL Standard sodium tartrate dihydrate, KF Tit. (water ~15.66%), Glass Bottle, 25 g
HYDRANAL Standard sodium tartrate dihydrate, KF Tit. (water ~15.66%), Glass Bottle, 25 g
Item number: FL34696-25G
Brand: Fluka

In stock

€46.23
Product Image of HYDRANAL Water Standard KF-Oven, 140-160°C standard, (water content ~5.0%), Glass Bottle, 10 g
HYDRANAL Water Standard KF-Oven, 140-160°C standard, (water content ~5.0%), Glass Bottle, 10 g
Item number: FL34693-10G
Brand: Fluka

In stock

€53.25
Product Image of HYDRANAL-Composite 5 one-component reagent, titer ~5 mg/ml, glass bottle with RFID chip, Smart Chemical for OMNIS, 6 x 1 L
HYDRANAL-Composite 5 one-component reagent, titer ~5 mg/ml, glass bottle with RFID chip, Smart Chemical for OMNIS, 6 x 1 L
Item number: FL34805-6X1L-OM
Brand: Fluka

In stock

€763.32
Product Image of HYDRANAL-Composite 5 one-component reagent, titer ~5 mg/ml, glass bottle with RFID chip, Smart Chemical for OMNIS, 1 L
HYDRANAL-Composite 5 one-component reagent, titer ~5 mg/ml, glass bottle with RFID chip, Smart Chemical for OMNIS, 1 L
Item number: FL34805-1L-OM
Brand: Fluka

In stock

€185.57 €231.96
Product Image of HYDRANAL-Titrant 5 two-component reagent, based on methanol, titer ~5 mg/ml, glass bottle with RFID chip, Smart Chemical for OMNIS, 6 x 1 L
HYDRANAL-Titrant 5 two-component reagent, based on methanol, titer ~5 mg/ml, glass bottle with RFID chip, Smart Chemical for OMNIS, 6 x 1 L
Item number: FL34801-6X1L-OM
Brand: Fluka

In stock

€634.81
Product Image of HYDRANAL-Titrant 5 two-component reagent, based on methanol, titer ~5 mg/ml, glass bottle with RFID chip, Smart Chemical for OMNIS, 1 L
HYDRANAL-Titrant 5 two-component reagent, based on methanol, titer ~5 mg/ml, glass bottle with RFID chip, Smart Chemical for OMNIS, 1 L
Item number: FL34801-1L-OM
Brand: Fluka

In stock

€121.32
Product Image of HYDRANAL - NEXTGEN Coulomat AG-FI, Glass Bottle, 6 x 500 ml
HYDRANAL - NEXTGEN Coulomat AG-FI, Glass Bottle, 6 x 500 ml
Item number: HY34433-6X500ML
Brand: Honeywell

In stock

€911.04
Product Image of HYDRANAL - NEXTGEN Coulomat AG-FI, Glass Bottle, 500 ml
HYDRANAL - NEXTGEN Coulomat AG-FI, Glass Bottle, 500 ml
Item number: HY34433-500ML
Brand: Honeywell

In stock

€174.56
Product Image of HYDRANAL - NEXTGEN Coulomat LiB, Glass Bottle, 6 x 500 ml
HYDRANAL - NEXTGEN Coulomat LiB, Glass Bottle, 6 x 500 ml
Item number: FL34471-6X500ML
Brand: Fluka

In stock

€2,627.43
Product Image of HYDRANAL - NEXTGEN Coulomat LiB, Glass Bottle, 500 ml
HYDRANAL - NEXTGEN Coulomat LiB, Glass Bottle, 500 ml
Item number: FL34471-500ML
Brand: Fluka

In stock

€504.24
Product Image of HYDRANAL - NEXTGEN Coulomat C-FA, Reference Material, Glass Bottle, 6 x 50 ml
HYDRANAL - NEXTGEN Coulomat C-FA, Reference Material, Glass Bottle, 6 x 50 ml
Item number: FL34470-6X50ML
Brand: Fluka

In stock

€2,556.29
Product Image of HYDRANAL - NEXTGEN Coulomat C-FA, Reference Material, Glass Bottle, 50 ml
HYDRANAL - NEXTGEN Coulomat C-FA, Reference Material, Glass Bottle, 50 ml
Item number: FL34470-50ML
Brand: Fluka

In stock

€484.29
Product Image of HYDRANAL - NEXTGEN Solvent FI, volumetric two-component KF titration (ethanol-based), no imidazole (no CMR substances), Glass Bottle, 6 x 1 L
HYDRANAL - NEXTGEN Solvent FI, volumetric two-component KF titration (ethanol-based), no imidazole (no CMR substances), Glass Bottle, 6 x 1 L
Item number: FL34432-6X1L
Brand: Fluka

In stock

€756.24
Product Image of HYDRANAL - NEXTGEN Solvent FI, volumetric two-component KF titration (ethanol-based), no imidazole (no CMR substances), Glass Bottle, 1 L
HYDRANAL - NEXTGEN Solvent FI, volumetric two-component KF titration (ethanol-based), no imidazole (no CMR substances), Glass Bottle, 1 L
Item number: FL34432-1L
Brand: Fluka

In stock

€144.96
Product Image of HYDRANAL - NEXTGEN Solvent E-FI, volumetric two-component KF titration (ethanol-based), no imidazole (no CMR substances), Glass Bottle, 6 x 1 L
HYDRANAL - NEXTGEN Solvent E-FI, volumetric two-component KF titration (ethanol-based), no imidazole (no CMR substances), Glass Bottle, 6 x 1 L
Item number: FL34431-6X1L
Brand: Fluka

In stock

€756.24
Product Image of HYDRANAL - NEXTGEN Solvent E-FI, volumetric two-component KF titration (ethanol-based), no imidazole (no CMR substances), Glass Bottle, 1 L
HYDRANAL - NEXTGEN Solvent E-FI, volumetric two-component KF titration (ethanol-based), no imidazole (no CMR substances), Glass Bottle, 1 L
Item number: FL34431-1L
Brand: Fluka

In stock

€144.96

Fundamentals - One & Two Component Reagents

As mentioned aforehand, the reagents based on the Karl Fischer method are to be divided into two different groups. On the one hand, there are so-called one-component reagents which are particularly suitable for the volumetric Karl Fischer titration of water. They include all components such as iodine, sulfur dioxide and imidazole (dissolved in alcohol). Great popularity among users experiences this type of reagents especially because of its easy handling since the components are already mixed to a singular solution. On the other hand there are two-component reagents which are build up slightly differently. Just like the one-component variant, they contain all the needed ingredients, however, divided into two separate solutions. This consists of a solution of sulfur dioxide, imidazole and methanol and a titrant - consisting of iodine and a water equivalent titrant. Both solutions are needed for the volumetric Karl Fischer titration and because of the separate solutions, the two-component version is slightly more complex.