Specifications

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800 227 9770
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MANUAL INJECTION VALVES
Agilent injection valves from Rheodyne are backed by 40 years of innovation
and experience. They feature …
The reproducibility of manual sample
injectors depends on operator skill, syringe
precision, and loading method. The partial-
filling method is typically reproducible to
1.0% relative standard deviation (RSD).
The complete-filling method is reproducible
to 0.1% RSD for 5 µl loops.
●
An injection port built right into the
handle.
This unique design allows the
tip of the needle to connect directly to
the sample loop. So you don’t have to
worry about sample loss during loading.
Series 7725i and 9725i Analytical Injection Valves
Stainless steel (SS) 7725i and PEEK 9725i
valves are the most popular injection
valves for analytical HPLC.
Features include:
●
A 20 µl loop (installed). Loops are also
available in stainless steel or PEEK from
5
µl to 5 ml (10 ml for PEEK).
●
Make-Before-Break (MBB)
technology
allows switching
without flow interruption.
●
Wide 30° port angles offer
easier access to fittings.
●
Built-in position sensing switch
provides the chromatograph with
a reproducible start signal.
●
Patented Make-Before-Break (MBB)
technology
that provides uninterrupted
flow when switching between LOAD
and INJECT positions. Additionally,
MBB greatly reduces transient pressure
shocks, which benefits flow-sensitive
detectors, and extends column life.
●
Dual-mode (or front-loading) injection,
which enables either the partial-filling or
the complete-filling of the sample loop.