TitroLine® 7500 KF - Automatic Titrator for Volumetric Water Determination

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 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 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.

Live Titration Curve of TitroLine® 7500 KF

The online display of the measurement curve, measurement drift and titration solvent consumption (TitroLine®7500 KF only) make accurate monitoring of the titration possible and one can determine any unwanted side reaction immediately.

Key Features TitroLine® 7500 KF

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)

Benefits of TitroLine® 7500 KF

Fast, easy and precise
With standard methods for different application (titer, blank value, one or two component reagents)
The addition of solvent and the extraction of the titrated sample are managed by the titration stand TM 235 KF (optional for TitroLine® 7500 KF trace)
Online display of curve and measurement drift during titration

Specifications TitroLine® 7500 KF

Specifications
Measuring input µA/KF:	μA-connector for double platinum electrodes, connection: 2 x 4 mm - sockets), polarisation voltage variably adjustable
Interfaces:	3 × USB (2 x USB-A and 1 × USB-B), 2 × RS-232-C and 1 x LAN
Interchangeable burettes	5, 10, 20 ml or 50 ml intelligent interchangeable burette units
Resolution (Steps):	20.000 steps
Dosing accuracy:	according to DIN ISO 8655, part 3: accuracy: < 0.15 % precision: < 0.05 - 0.07 % (in dependence of the used burette size)
Display	3.5 inches - 1/4 VGA TFT graphic color display with 320 x 240 pixels
Housing material	Polypropylene
Dimensions	15.3 x 45 x 29.6 cm (W x H x D), height with interchangeable head
Front keyboard	Polyester coated
Material interchangeable burettes	Valve: PTFE/ETFE; Cylinder: borosilikate glass 3.3 (DURAN®) hoses (FEP, blue)
Weight	2.3 kg for basic device, 3.5 kg für complete device with interchangeable head (with empty reagent bottle)
Ambient conditions	Ambient temperature: + 10 ... + 40 °C for operation and storage Humidity according to EN 61 010, Part 1: max. relative humidity 80 % for temperatures up to 31 °C, linear decrease down to 50 % relative humidity at a temperature of 40 °C
Power supply:	100-240 V; 50/60 Hz, power input: 30 VA
CE-sign:	EMC compatibility according to the Council Directive: 2004/108/EG; applied harmonized standards: EN 61326-1:2006 Low-voltage directive according to the Council Directive 2006/95/EG Testing basis EN 61 010, Part 1
Titration stand TM 235 KF
Pump	Free volume flow- air-: flow rate 2.25 l / min Delivery pressure max. 1.5 bar. Flow rate liquid medium ca. 0.8 l / min
Stirring speed	50 ... 1000 U/min
Hoses	PVC- hose (outer diameter 6 x 1 mm) PTFE- hose (outer diameter 4 x 0.5 mm)
Dimensions	80 x 130 x 250 mm, (W x H x D (height without stand rod)
Weight	1 Kg

Basic titrator TitroLine® 7500 KF unit includes:

Basic unit, connection cable for TM 235 and TM 235 KF, USB keyboard TZ 3835, stand rod TZ 1748 and power supply 100-240 V.

Ordering Information TitroLine® 7500 KF

Type No.	Order No.	Description
TL 7500 KF 05	285220810	Basic unit + 5ml burette head + stand/stirrer/pump + vessel + electrode + starter kit Basic titrator unit, 5 ml exchangeable burette head WA 05, TM 235 KF titration stand with integrated stirrer and pump, titration vessel TZ 1770, micro double platinum electrode KF 1100 and starter kit with desiccant, glass wool, syringes and needles.
TL 7500 KF 10	285220820	Basic unit + 10ml burette head + stand/stirrer/pump + vessel + electrode + starter kit Basic titrator unit, 10 ml exchangeable burette head WA 10, TM 235 KF titration stand with integrated stirrer and pump, titration vessel TZ 1770, micro double platinum electrode KF 1100 and starter kit with desiccant, glass wool, syringes and needles.
TL 7500 KF 20	285220830	Basic unit + 20ml burette head + stand/stirrer/pump + vessel + electrode + starter kit Basic titrator unit, 20 ml exchangeable burette head WA 20, TM 235 KF titration stand with integrated stirrer and pump, titration vessel TZ 1770, micro double platinum electrode KF 1100 and starter kit with desiccant, glass wool, syringes and needles.

Ordering information accessories for TitroLine® 7500 KF

Type No.	Order No.	Description
WA 05	285220300	5 ml exchangeable unit with integrated chip for reagent data, with brown glass bottle for titrant, GL 45 and S 40-bottle adapter, tubes, drip tube and titration tip
WA 10	285220310	10 ml exchangeable unit with integrated chip for reagent data, with brown glass bottle for titrant, GL 45 and S 40-bottle adapter, tubes, drip tube and titration tip
WA 20	285220320	20 ml exchangeable unit with integrated chip for reagent data, with brown glass bottle for titrant, GL 45 and S 40-bottle adapter, tubes, drip tube and titration tip
WA 50	285220350	50 ml exchangeable unit with integrated chip for reagent data, with brown glass bottle for titrant, GL 45 and S 40-bottle adapter, tubes, drip tube and titration tip
TM 235, 115-230 V	285220400	Magnetic stirrer for vessels up to 500 ml, agitator speed infinitely adjustable from 500 - 2000 rpm, for the connection to TitroLine® 6000/7000 and TITRONIC® 500
TM 235 KF, 115-230 V	285220900	Titriation stand with pump; Scope of delivery: Basic unit with 1 l DURAN ®-reagent bottle TZ 1791, 1 l DURAN®-waste bottle TZ 1792, moisture bottle, tubes and screw threads, power supply TZ 1855 (110 to 240 V)
TZ 1052	285214721	KF-drying stove, 230 V
TZ 1055	285215183	KF-drying stove, 115 V
TZ 1060	285218115	Accessories set for KF drying stove TZ 1052/TZ1055
TZ 1065	285201973	Flowmeter with valve and hose connectors for gas volumes (air, nitrogen) from 50 - 500 ml/min
KF 1100	285102030	Micro double platinum electrode for Karl Fischer titrations, with fixed cable, double platinum pin and tapper NS 7.5 for TZ 1770 and TZ 1772
TZ 1748	285216560	Stand rod stainless steel Ø 10 mm
TZ 1770	285216677	Karl Fischer titration vessel. DURAN® glass vessel TZ 1775 (approx. 30...150 ml), removable head made of polypropylene/PTFE, 1 drilling NS 19, NS 14,5, NS 7,5 and 3 drillings with screw threads, titration tip, moisture trap and weighing funnel
TZ 1789	285221120	Starter kit KF consisting of molecular sieve, needles with syringes and glass wool
TZ 3863	285220480	USB-thermo printer, 112 mm for TitroLine® 6000/7000/7500 KF/7500 KF trace/7750 and TITRONIC® 500
TZ 3864	285220710	Thermal paper for TZ 3863 with very high durability (5 rolls)
TZ 3865	285220440	DIN A4 standard printer, HP PCL-compatible, with USB-connection cable, 230 V