LC Accessories

L C A C C E S S O R I E S
Valves
ASI QuickSplit Adjustable Flow Splitters
• Adjustable flow splitter enables direct real time
control over split ratio optimization
• Create split ratios from 1:1 to 1000:1
• Ultra low 0.5µL delay volume on capillary side
• Easy to use interchangeable fluid resistors create a
wide range of split ratios
6328
Post-Column Adjustable Splitters
The flow path of the ASI post-column Adjustable Flow
Splitter contains two fluid resistors that form a parallel
flow path. The low flow rate stream passes through a
fixed resistor cartridge, while the high flow rate stream
passes through an adjustable fluid resistor (metering
valve). The ratio of these two resistors creates the split
flow ratio. Due to the rugged design, the split ratio
repeatability is +/- 1% of setting, and unlike alternative
splitter valves or tees, will not be affected by actions
that effect input flow such as turning the pump off and
on, or pressure spikes.
Because the Adjustable Flow Splitter incorporates a
metering valve, split ratios can be changed frequently
with flow changes that are stable and reproducible.
This provides direct real time control over split ratio
optimization. Split ratios are not affected by changes
in solvent viscosity or pressure. These splitters have an
input flow range from 0.1 to 5mL/min. Semi-prep and
prep models with split ratios up to 20,000:1 available
upon request.
ASI POST-COLUMN ADJUSTABLE FLOW SPLITTERS
DESCRIPTION PART NO. PRICE
ASI Post-Column Adjustable Flow Splitters
Adjustable from 50:1 to 1000:1 60201
Adjustable from 15:1 to 250:1 60203
Adjustable from 5:1 to 100:1 60204
Adjustable from 1:1 to 20:1 60206
Replacement Resistor Cartridges
For 50:1 to 1000:1 601101
For 15:1 to 250:1 601103
For 5:1 to 100:1 601104
For 1:1 to 20:1 601106
Pre-Column Adjustable Splitters
Pre-Column splitting is used for micro, capillary
and nano HPLC applications where the flow from the
pump is split from the analytical flow rates (0.25 to
1mL/min) down to microliter or nanoliter flows. Pre-
Column Splitters have all the same features as Post-
Column Splitters except that they are configured to
compensate for the added resistance that a column
downstream produces on the low flow channel. This
added resistance must be factored in to make sure the
fluid resistors selected for the splitter provide the correct
split ratio. Therefore please specify the column flow rate
and back pressure. If this is not provided, the splitter will
be configured to assume a 0.5mL/min inlet flow and a
pressure drop of 1500psig.
ASI PRE-COLUMN ADJUSTABLE FLOW SPLITTERS
DESCRIPTION PART NO. PRICE
ASI Pre-Column Adjustable Flow Splitters
Adjustable from 50:1 to 1000:1 660201
Adjustable from 15:1 to 250:1 660203
Adjustable from 5:1 to 100:1 660204
Adjustable from 1:1 to 20:1 660206
Replacement Resistor Cartridges
For 50:1 to 1000:1 6601101
For 15:1 to 250:1 6601103
For 5:1 to 100:1 6601104
For 1:1 to 20:1 6601106
© Copyright 2004 Alltech Associates, Inc.
Contact your Alltech office or distributor for current or local prices.
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