Metrohm® Coulometric Karl Fischer Titrators®

Metrohm Karl Fischer coulometers guarantee accurate and reproducible results, even for water contents in the lower microgram range.

They feature a compact design, flexibility and easy operation. The large LCD screen provides a clear view of the parameters, and it also displays the live curve in microgram water versus time. Metrohm coulometers come equipped with two RS-232C interfaces, which allow communication with a balance, external printer and/or PC; Model 756 features a built-in printer.

Water content Precision

10 µg to 1,000 µg ±3 µg

>1,000 µg 0.3% or better

Economical determination of trace amounts of water:

• Microcontroller ensures precision down to the lower microgram range
• Ready-to-go methods are preloaded in the instrument
• Expandable, modular system—add automation, software and/or KF oven
• Generator electrode available with or without a diaphragm
• GLP compliance—full documentation, keyboard lockout, user name registration and result limits

Typical examples of samples that should be analysed by Coulometric Karl Fischer applications:

Solvents

• Acetic acid
• Acetonitrile
• Benzene
• Chloroform
• Cresols
• Cyclohexane
• Dioxane
• Ethanol
• Furan
• Glycerol
• Hexane
• Isopropanol
• Liquid paraffin
• Nitrobenzene
• Octanol
• Petroleum ether
• Pyridine
• Resorcinol dimethyl ether
• Tetrahydrofuran
• Toluene
• Vinyl ether
• Xylene

Finished products

• Aftershave lotion
• Almond oil
• Aperitif
• Butter
• Coffee cream
• Cognac
• Cough syrup
• Lotion
• Margarine
• Mascara
• Mustard
• Sun cream
• Vinegar

Industrial products

• Benzoic acid
• Freons
• Gasoline
• Insulating oil
• Metal oxides
• Mineral oil
• Nitrogen
• Petroleum
• Plastic films
• Plastics granules
• Salicylic acid
• Salts
• Silicone oil
• Sulphuric acid
• Transformer oil

For further information please contact Metrohm UK LTD