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SyriXus Series Pumps Installation and Operation Guide
Section 6 Modifier Addition
6.1 Overview
EAR99 Technology Subject to Restrictions Contained on the Cover Page
Pumping systems using a modifier (usually a solvent) may have dif-
ferent configurations, depending on the application, including:
• Two separate pumps, one delivering a primary reagent or
solvent and the other delivering a modifier through a mixing
device to one or more user-provided extractors.
• A dual-pump system in Constant Pressure Mode pumping super-
critical fluid, with a third pump delivering the modifier.
In both configurations, the purpose is to dispense a mixture with a
programmable v/v ratio. Modifier concentrations of up to 100% can be
programmed. Both fluids need to pass through one-way check valves
before they meet and are blended in a user supplied mixing device.
This mixing device can be as simple as a fluid tee, or more elaborate
containing machined features to enhance mixing. Often, this mixing
device is incorporated into the user's application system.
This section describes a possible technique to create a modifier
addition using user supplied tubing, fittings and hardware. Because of
the wide range of possible arrangements, these parts are not provided
by Teledyne ISCO.
RISK OF INJURY. THE PRESSURE PRODUCED
COULD BE UP TO 1400 BAR. PLEASE UTILIZE
APPROPRIATE TUBING CONNECTIONS AS NOTED.
ALL USER SUPPLIED COMPONENTS MUST BE
RATED FOR PRESSURES HIGHER THAN THE
SPECIFIED MAXIMUM PRESSURE OF THE PUMPS.
The configurations described in this section apply to SyriXus 260x,
500x and 1000x pumps that use Valco or SSI fittings. The SyriXus
65x pump can be configured and operated in a similar manner.
However, due to the higher operating pressure and the AE F250C
fittings, the 65x requires hardware that is not listed in this section.
Contact Teledyne ISCO customer service for details on configuring
a 65x pump for this type of operation.
DANGER
NOTE
6-1
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