S 6250, S 6300 auto samplers The S 6250 and S 6300 auto samplers are very flexible and powerful HPLC and GPC/SEC auto samplers with excellent reproducibility and linearity properties. Variable vial racks and adaptors for microtiter plates as well as a multitude of firmware options make this systems highly adaptable and suitable for any analytical application. Auto sampler S 6250 (60 samples) is in a small housing and the auto sampler S 6300 (120 samples) is in a slightly larger housing (see technical specifications). Robust design Durable X/Y/Z-sampling The S 6250 and S 6300 auto samplers features a mechanically durable X / Y / Z - sampling-mechanic designed for long life operation. The self-lubricating bearings keep the routine maintenance at a minimum and avoid troubles caused by dusty environments. High precision stepper motors drive the X/Y axis for accurate positioning. Micro stepping mode enables a high resolution for the syringe dosing and vial positioning. Dual-Needle Design The dual-needle design of the S 6250 and S 6300 auto samplers avoids system blockages due to septum particles injected into the system. The ventilation needle pierces the septum before the injection needle moves into the sample vial (see figure on the right). As the more fragile injection needle does not need to pierce the vial septum, stronger vial caps or plastic vials can be used without problems. Figure: Dual -Needle injection Accessibility The injection valve with sample loop and injection port can be accessed directly from the instrument front without removing any protective covers. The dosing syringe can be accessed from the side of the instrument through a hinged glass panel. The exchange of the syringe can be done without the requirement of any tools. Schambeck SFD GmbH Drieschweg 13A D-53604 Bad Honnef/Germany Phone: +49 2224 9239 - 0 Fax: +49 2224 9239 - 20 E-Mail: [email protected] Internet: www.schambeck-sfd.com Figure: mechanic design

S 6250, S 6300 auto samplers Precision & modularity Performance The S 6250 and S 6300 auto samplers offers multiple injection modes depending on application and sample needs. Besides fixed loop overfilling and variable volume injection the instrument offers a Zero-Waste injection mode for injecting very small sample amounts by moving the sample into the middle of the sample loop. Linearity and injection precision can be optimized for any volume by different sample loops and syringe sizes. Modular options The modular nature of the S 6250 and S 6300 auto samplers offers the possibility to “just...