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Rheodyne® Model 8125 Low Dispersion Injector

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manual, dispersion injector


number of ports 6
positions 2


7000 psi max. pressure (490 bar)

General description

Inject as little as 0.1 μL of sample with high accuracy and zero waste. Small diameter flow channels in a low-dispersion version of the popular Model 7125 injector. Excellent for use with narrow bore columns (1-3 mm I.D.), but also well suited for larger diameter columns. Resolution is most improved with relatively unretained low peaks, the peaks most affected by extra-column effects.
Additional features include:

  • Built-in zero-holdup needle port
  • Built-in position switch to signal injection
  • Long rotor seal lifetime -- make up to 30,000 injections before replacing seal (Vespel)
  • User-adjustable to 7000 psi (490 kg/cm2)
  • Easy-to-service flat-face rotor design

Supplied with a 5 μL sample loop, fittings for all ports, 22-gauge luer hub needles, needle port cleaner, two vent tubes, wrenches, mounting screws and instructions. Order additional sample loops separately.

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Legal Information

Rheodyne is a registered trademark of IDEX Health & Science, LLC

Storage Class

11 - Combustible Solids




Not applicable


Not applicable

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