TW 7400 Autosampler

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Sample changer

  • Overview

    The number of samples to be processed is growing constantly while at the same time the demands on reliability are increasing in accordance with GLP and ISO 900X standards. The TW 7400 sample changer helps you meet these increased requirements and relieve qualified employees from routine work. 
    The X / Y sample changer TW 7400 is particularly suitable for a large sample demands. 

    The control of the sample changer is carried out via the software TitriSoft. 

    The TW 7400 contains the following features:

    • Sample racks with 42, 48 and 72 positions and four different titration heads in different dimensions and holes can be used
    • The titration heads and sample tracks are interchangeable
    • The usable sample vessels have a volume of 50 - 250 ml
    • For rinsing the electrodes and titration tips, a rinsing pump can be used
    • The calibration of a pH electrode can also be done on the sample changer
    • Stirring is only possible from above with a rod stirrer (propeller stirrer). The rod stirrer TZ 1847 is included in the scope of delivery of the TW7400- and TL 7000-TW 7400 modules

    Want to learn about YSI's full line of titration systems and features? Visit our titration homepage

    You can also download The Titration Handbook - the comprehensive guide to titration fundamentals and common applications.

  • Specifications
    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


    Height (H) 48 cm (including tower) + 18 – 20 cm for the control cables and tubes


    2 × RS-232-C, 1 x I/O, 1 x pump, 1 x stirrer, 1 x USB-B, 1 x LAN

    Material Housing made of coated metal, Sample rack: coated aluminum
    Power 100-240 VA +/- 10%, 4.4A
    Weight 21 Kg

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