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Manual Valves
Rheodyne manufactures a wide array of manual platforms for both laboratory users and instrument manufacturers. Manual platforms include high-pressure sample injectors, high-pressure switching platforms, and low-pressure platforms. In addition to functions and capabilities, most platforms are available with different liquid contact materials to accommodate sample pH ranges and the retention of biological activity. For complete catalog information
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Manual Sample Injectors
Rheodyne manual sample injectors are available for micro, analytical, and preparative scale analyses. Sample injectors are grouped depending on the sample volume to be loaded onto the column:

Micro 2µL to 500µL, Analytical 1.0µL to 5.0mL, Preparative 100µL to 10mL,

Types and Capabilities
DUAL MODE
Dual mode injectors (models ending in -25), also termed front loading injectors, can use both the partial- and complete-filling method for loading the sample loop. They are variable volume injectors and allow the loading of various sample volumes.

SINGLE MODE
Single mode injectors (models ending in -10) use only the complete-filling method for loading the sample. The sample loop size determines the volume to be injected onto the column.