The Rheodyne MRA100-000 from IDEX Health & Science is an active splitting device that delivers a small aliquot of an HPLC stream into a Mass Spec. The Flow Splitter offers 4-ports with a 6-position configuration. The Mass Rate Attenuator can be used in analytical scale to prep scale flow rate applications with little or no obervable post-column band broadening. The ability to select from a wide range of split rations will add convenience, productivity and timesavings to the LC/MS applications. The Rheodyne MRA can be operated with Input Line Control or via RS232 communication.

• 4-port 6-position
• 59 discrete LC/MS flow split ratios
• range from 100:1 to 100,000:1

The 59 discrete LC/MS flow split ratios range from 100:1 to 100,000:1. Split ratios will remain unaffected by mobile phase viscosity, tubing length and temperature changes. Please see the table below for available flow splitting ratios at given HPLC flow rates:

Flow Diagram

A schematic of the valve flow-switching pattern is shown below. The circles represent the ports in the stator and the grooves represent the connecting passages in the rotor seal. Please note that this is a graphical representation of the flow path and does not illustrate the actual flow through the stator and rotor seal.