Rheodyne (IDEX Health & Science)

Rheodyne 7725/7725i front loading HPLC Sample Injectors are convenient in use, and provide chromatographers with superb performance and exceptional product lifetime. Continuous flow during switching A front-end Pressure Screw- for easy seal adjustment Wide port angles - for improved access to fittings Capability of reproducible 2 μl sample injections

 

Cat. no.	Description
7725	Sample Injector, SS
7725i	Sample Injector, SS, pos. sensing switch*
9725	Sample Injector, Peek
9725i	Sample Injector, pos. sensing switch*

* ^{position sensing switch provides a chromatograph a start signal}

 

The injector includes a 20 μL sample loop and is supplied with a VESPEL® rotor seal that can be replaced with a Tefzel® rotor seal for operation at pH 0-14 (use VESPEL seals to pH 10). Factory set at 5000 psi (345 bar), adjustable to 7000 psi (483 bar). Model 7725i has an internal position-sensing switch.

 

Rheodyne® Model 7125 Sample Injector The Rheodyne Model 7125 syringe loading injector allows injection of the entire contents of the syringe into the sample loop – no need to flush the valve between injections except for trace analyses. It also injects samples from a partially filled loop saving time by eliminating the need to change the sample loop. The Model 7125 injector can be used at pressures up to 7000 psi (490 kg/cm2) and is supplied with a VESPEL® rotor seal for operation at pH 0-10 (use a Tefzel® seal at pH 0-14). A 20 μL sample loop is included; order additional loops separately. When selecting replacement seals, use VESPEL seals to pH 10; Tefzel seals to pH 14

 

Cat. No.	Description
7125	Sample Injector, including 20 μL sample loop