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Figure 1
The Trident™ Direct guard column system
offers three levels of protection
• 12 •
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you may wonder if it is environmentally friendly.
It sure is! The corrugated cardboard box and
insert are completely recyclable, and we engi-
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styrofoam peanuts. Help us help the environment
by recycling Restek packaging.
Unlike other “one size fits all” guard systems, the
Trident™ Direct system gives you the power to select
the right level of protection for your analysis. The
system offers three levels of protection and guard
cartridges that are available in four dimensions with
a variety of bonded phases to match your analytical
column (Figure 1). The economical leak-free car-
tridge design provides an unprecedented combina-
tion of convenience, economy, and reliability.
The foundation of the Trident™ Direct system is a
reusable direct connecting holder that easily attach-
by Greg France, HPLC Product Marketing Manager
Trident™ Direct Guard
Column System
The Ultimate Combination of Convenience and
Column Protection
✔ Direct connection eliminates
connection tubing and extra
dead volume
✔ Three levels of protection to fit
your needs
*The standard PEEK® tip that comes with the Trident™ Direct systems is compatible with Parker,
Swagelok, Upchurch, Valco, and other CPI-style fittings. To use the Trident™ Direct systems with
Waters-style end fittings, the tip must be replaced with cat.# 25088.
(C) Trident™ Direct 2cm guard cartridge
holder with filter
Maximum protection against particulate
matter and irreversibly-adsorbed compounds
for moreinfo
request Fast Facts # 59314.
es to any HPLC column using CPI- or Waters®-style
end fittings.* The system is available in the follow-
ing configurations to match different protection
level needs: in-line filter (A), in-line filter with
holder for 1cm guard cartridge (B), and in-line fil-
ter with holder for 2cm guard cartridge (C). The
guard cartridges are available in both 2.1mm and
4.0mm IDs and are interchangeable with the appro-
priate length holder.
For protection against particulate matter only, use
the Trident™ Direct high-pressure filter. For protec-
tion against particulate matter and sample impuri-
ties, use the Trident Direct 1cm holder and 1cm
guard cartridges. This is the most popular configu-
ration and is well suited for most applications. For
protection against particulate matter and heavily
contaminated samples, use the Trident Direct 2cm
holder and 2cm guard cartridges.
✔ Trident™ Direct Guard Column System
Trident™ Direct cat.# ea.
High-pressure filter 25082
1cm guard cartridge holder with filter 25084
2cm guard cartridge holder with filter 25086
Connection tip for Waters®-style end fittings 25088
Replacement Frits for the Trident™ Filter cat.# 5-pk.
Cap frits 4mm, 2.0µm 25022
Cap frits 4mm, 0.5µm 25023
Cap frits 2mm, 2.0µm 25057
Guard Column (10 x 2.1mm) (10 x 4.0mm) (20 x 2.1mm) (20 x 4.0mm)
Cartridges 3-pk. 3-pk. 2-pk. 2-pk.
Allure™ Acidix 916250212 916250210 916250222 916250220
Allure™ Basix 916150212 916150210 916150222 916150220
Allure™ C18 916450212 916450210 916450222 916450220
Allure™ PFP Propyl 916950212 916950210 916950222 916950220
Allure™ Silica 916050212 916050210 916050222 916050220
Ultra Amino 910750212 910750210 910750222 910750220
Ultra Aqueous C18 917850212 917850210 917850222 917850220
Ultra C1 910150212 910150210 910150222 910150220
Ultra C4 910250212 910250210 910250222 910250220
Ultra C8 910350212 910350210 910350222 910350220
Ultra C18 917450212 917450210 917450222 917450220
Ultra Cyano 910650212 910650210 910650222 910650220
Ultra IBD 917550212 917550210 917550222 917550220
Ultra PFP 917650212 917650210 917650222 917650220
Ultra Phenyl 910550212 910550210 910550222 910550220
Ultra Silica 910050212 910050210 910050222 910050220
(B) Trident™ Direct 1cm guard cartridge
holder with filter
Moderate protection against particulate
matter and irreversibly-adsorbed compounds
(A) Trident™ Direct high-pressure filter
Protection against particulate matter
After you decide what level of protection and diam-
eter guard cartridge is right for your application,
you should choose the cartridge with a bonded
phase that is the same or similar to your analytical
column. The Allure™ and Ultra bonded phases are
base-deactivated and compatible with virtually all
silica-based analytical columns.