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Coulometric Karl Fischer Titrator
 

VolumetricKarl Fischer Titrator GEC-KFV

GEC-KFV Aquamax Karl Fischer Volumetric can be used for samples with high water content, from ppm levels up to 100% water. An iodine containing solution serves as titrating agent. The water content of the sample is calculated using the titration volume of the titrating agent. One component reagents conveniently contain all reactants (iodine, sulfur dioxide and a base) dissolved in a suitable alcohol in one solution. Two component reagents contain all necessary reactants in two different solutions to enhance the rapidity of the Karl Fischer reaction and the stability of the titrating agent.
The platinum measuring indicator electrode determines whether or not iodine needs to be added to react with any water present. The water is detected voltametrically and as long as the electrode detects water, it will electronically instruct the burette to keep adding reagent. When all the water has reacted the burette stops dispensing and the end point is reached.
The titrator records the volume of KF reagent dispensed. Based on the concentration of iodine in the KF reagent, the unit calculates how much water was present in the sample.
The Aquamax KF Volumetric offers several user programmes for titration and standardisation. Incorporating two 5ml syringes, one can be used for the KF reagent and the other for automatic dosing of a standard for the titre. The second syringe can also be used for a different factor reagent or possibly special reagents for ketone / amine samples. There are two built-in peristaltic pumps, one for dispensing the solvent into the titration vessel and the other for emptying the vessel.
With many features including automatic rest cycle (stand-by mode) if not used for 15 minutes, automatic air bubble elimination, intelligent control of drift value, connection to pc, printer, balances, etc. these titrators are also covered by a 5 year parts & labour warranty.

Very easy to use

Intuitive keypad and function guide display. The messages on the titrator display guide the user making the instrument suitable for routine analysis.

2 x 5ml high precision syringes controlled by a stepper motor which dispense the syringe volume in 40000 steps. One syringe can be used for the KF reagent and the other for automatic dosing of standard for the titre. Second syringe can also be used for other factor reagents or special reagents such as those for ketone samples.

Electro switching valves are fitted to each syringe to control flow direction of solvent and reagents.

2 built-in peristaltic pumps to dispense solvent and empty titration vessel.



 

 
 

Technical specifications

Non-volatile memory:

Up to 10 titration programs,
Clock/calendar,
Header texts: 2 lines x 40 characters.
Name of up to 4 operators
Program comments: 8 lines x 40 characters
Up to 55 results stored in Data Logger

Languages:

English, Spanish, French, Italian

Display:

Graphic backlit LCD, 128 x 64 dots

Keypad:

Membrane, 7 keys, guaranteed up to 6 million strokes per key,

Material:

PET with protective treatment

Measuring ranges:

From 0.1 mg up to 100% water

Syringe volume:

Standard syringe 5 ml

Resolution:

1/40000 of syringe volume

Dispensing accuracy:

(as relative error) ≤ 0.2 % for volumes higher than 10 % of the syringe

Dispensing reproducibility:

0.1 % for volumes higher than 10 % of the syringe

Liquid contact materials:

Syringe: borosilicate glass and PTFE
Electrovalve:PTFE and KEL-F. Tubes: PTFE

Inputs and outputs:

Polarised electrode, BNC connector.
For external keyboard, miniDIN connector.
RS232C bidirectional for PC or printer, telephone connector.
RS232C for balance, telephone connector

Stirrer control:

On/Off and speed, RCA connector

Power supply:

90-264 VAC, 47-63 Hz, 24 V DC

Electrical safety:

Meets EC, EN 61010

EMC:

Meets EC, EN 50081-2 and EN 50082-2

Permitted temperatures:

Operating: 15 40 C.
Storage: -10 50 C
≤ 80 %, relative humidity, non condensing

Enclosure

ABS and enamelled steel

Physical parameters:

Weight: 4 kg approx.

Dimensions:

130 x 160 x 300mm








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