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HPLC HPLC Valves and Loops

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  • Stainless Steel Sample Loops

    Agilent Technologies

    Sample loops for Rheodyne 7725 Series and 7125 Series valves are not interchangeable due to the change in port angle Actual volumes can differ due to tolerance of metal tubing bore Accuracy of large metal loops is ±5%, intermediate loops ±10%, small loops ±30%

  • Rheodyne Series 7725i

    Agilent Technologies

    Stainless steel Most popular injection valve for analytical HPLC Loops range from 1 µl to 5 ml (20 µl loop installed) Built in position sensing switch provides the LC with reproducible start signal Selected as Agilent 1050 and 1100 manual injectors

  • Mininert® Valve, screw thread for use with 20/400 mm thread

    Sigma-Aldrich

    Application Mininert valves are leak-tight closures for vials and other containers. They are available in both crimp and screw thread versions. Only PTFE and glass are in contact with the contents of the container. They are the ideal closure for the following applications: calibration…

  • Peek Sample Loops

    Agilent Technologies

    Flexible PEEK loops have a clean, straight cut for low dead volume connections Inert to most organic solvents Wall thickness, temperature, exposure time and concentration of organic solvents affect the durability of PEEK tubing Concentrated nitric acid and sulfuric acid weaken PEEK…

  • Injection Valve Replacement Parts

    Agilent Technologies

    Rotor seals wear with use and need routine replacement Stators only need replacement if the ports are damaged PEEK rotor seals are incompatible with concentrated nitric and sulfuric acids

  • Rheodyne Series 3725i

    Agilent Technologies

    Large sample volumes, high flow rates and preparative columns 100 µl to 20 ml (10 ml loop installed) For biomolecules, the 3725i has PEEK materials

  • Rheodyne Series 9725i

    Agilent Technologies

    PEEK flow path is perfect for biomolecules?sample does not contact metal Similar features as 7725i, including the “make-before-break” design

  • Switching Valve Supplies

    Agilent Technologies

    A set of valve types specially designed for the Agilent 1100/1200 Series HPLC system allows you to extend your HPLC applications. More flexibility in solvent selection and column selection New automation capabilities in sample preparation Increased sample throughput through…

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