TitroLine 7500KF

The TitroLine® 7500 KF is a compact, easy-to-use volumetric titrator for water determination according to Karl Fischer (KF) with a typical operating range of 0.1 % – 100 % water.

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The TitroLine® 7500 KF is a compact, easy-to-use volumetric titrator for water determination according to Karl Fischer (KF) with a typical operating range of 0.1 % – 100 % water.

The water determination according to Karl Fisher (KF) is the most selective and precise method for water determination. There is the volumetric and coulometric method. The coulometric method generates the iodine directly in the titration vessel which allows the determination of very low water concentrations. The advantage is also that you do not have to determine the concentration of the titrant. With the volumetric method the iodine is added accurately through a piston burette.

The volumetric method is the more general method suitable for almost all kind of samples. Suitable for chemical, petrochemical, plastic and pharmaceutical as well as the food industry. The samples could be either liquid, solid or gaseous. Besides the selection of the right KF reagents, e.g. a higher temperature and/or the use of a disperser allows to determine the water content in many samples.

The TL 7500 with 5, 10 or 20 ml burette has an exceptional high visibility full color graphic display which allows viewing even at extreme angles. The titration curve, but also other information such as ml, drift in µg/mL and µA-value are clearly displayed on the display.

The three USB, two RS 232 and Ethernet interfaces makes the TL 7500 KF highly communicative. Various USB devices such as printers, barcode readers, keyboards can be connected. Analytical balances, PC and other SI Analytics devices such as the autosampler TW 7200 can be connected via the RS-232 interfaces. The Ethernet interface allows data to be stored on a directly connected USB stick in PDF and CSV format as well as on shared network directories.

The parameters can be customized in each of the up to 50 methods. Through the user/password management, each user can be assigned individual rights. If you need even more methods or want to manage the data on a PC, you can use the TitriSoft PC software to control the TL 7500 KF. The TitriSoft 3.5P (TZ 3572) comply fully with 21 CFR, Part 11.

Key Features

  • Volumetric KF titration
  • Ready to use standard methods for standardization of the titrant and sample titration for 1- and 2-Component KF titrants.
  • Statistical functions including average value and relative standard deviation
  • Configurable output: Short, Standard with curve, GLP
  • Formula editor for individual calculations
  • Output of results in ppm,%, mg, μg, mg / l. Unit individually adjustable
  • Also suitable for the determination of bromine number and other dead stop titrations such as SO2 in wine and other food products.
  • Can be used also for dosing tasks such as sample preparation based on the sample weight.
  • The addition of the solvent and the extraction of the titrated sample are carried out by titration stand at the push of a button (Included with all sets)
Model Titroline 7500KF
Interfaces 3 × USB (2 x USB-A and 1 × USB-B), 2 × RS-232-C and 1 x LAN
Intelligent interchangeable modules Yes, 5, 10, 20 and 50 ml
Burette resolution (steps) 20000
Dosing accuracy according ISO 8655, part 3 Accuracy : 0.15 %
Precision: 0.05 – 0.07 %
(Depending on the used interchangeable unit)
User methods Yes
Number of user methods 50
Automatic titration Yes
Dead stop titration Yes
Water analysis according to KF Volumetric method Yes
Display 3.5 in -1/4 VGA TFT display with 320×240 pixels
Dimensions (W x H x D) 153x 450 x 296 mm(height with interchangeable unit)
Material Valve: PTFE/ETFE;
Cylinder: 3.3 DURAN®borosilicate glass
Hoses: (FEP, blue)
Weight 2.3kg
Ambient conditions Ambient temperature: + 10 … + 40 °C
Power 100-240 V; 50/60 Hz, power input: 30 VA