Karl Fischer Water Content Determination
in Food, Beverages and Cosmetics
Introducing the newest addition to Hanna’s family of Titration Systems: the HI 904 Coulometric Karl Fischer Titrator.
The HI 904 excels at determining water content in extremely small concentrations (1 ppm to 5%) and requires no titrant,
instead using a generator electrode.
A pulsed DC current is applied to the generator electrode and results in oxidation of free iodide to iodine (the titrant) at the
platinum anode. Alcohol, sulfur dioxide and base (pyridine or imidazole) present in the reagents react to form a salt that is
oxidized by the generated iodine.
This reaction consumes water present in the cell in a 1:1 ratio (iodine:water). Once all of the water is consumed, the excess
iodine is detected using a bilvoltammetric detector electrode and signals the end of the titration. The result is calculated from
the amount of current applied to complete the reaction and the length of time that the generator electrode is active (A•s, or
Coulombs).
The HI 903 Karl Fischer Volumetric Titrator is an
extension of HANNA’s highly successful potentiometric
Titrator platform.
The HI 903 combines an ultra-high precision titrant
delivery system with optically regulated magnetic stirring
and sophisticated endpoint determination, dynamic
dosing and background drift correction algorithms.
The HI 903 comes equipped with a solvent handling
system to reduce cell conditioning time and can be
connected directly to your laboratory balance via serial
interface.
The HI 903’s powerful software and intuitive menus are
easily navigated on the large color LCD display making it
simple to view results, choose from included methods or
develop a custom method for almost any application or
sample type.
The result is an extremely adaptable Titrator capable of
titrating with superior accuracy and precision even for
samples with low moisture content.
Fats, oils and dairy products
Samples : edible oil, butter, margarine, milk powders, yoghurt, ice cream, cheese
Grains, Starchy Foods
Samples : Flour, biscuits, cereals, noodles,
Spice & Dehydrated Products
Samples: Pepper, curry, salt, mixed spice, mustard, instant coffee
Beverages and concentrates
Samples : cognac, beer, wine, liquor, orange juice, tomato juice, black currant syrup, instant ice tea
Sugar and Sugar Products:
Samples: Saccharose, cane sugar, honey, jelly, jam, chocolate
Cosmetics
Samples : shampoo, aftershave, day cream, sun lotion, lipstick, massage oil, toothpaste
Various Foodstuffs:
Samples: hazelnuts, cocoa powder, tea, coffee beans, tobacco, instant pudding powder,
Chocolate flavour
PRODUCT RANGE
With Great Products, Come Great Results™