Purifying solvents with a filter prior to use in chromatography is an essential step that cannot be...
Autosampler problems are insidious. Unlike an obvious pump failure, a worn rotor seal or damaged needle gradually degrades your data quality. By the time you notice carryover issues or injection precision dropping off, the problem has been building for weeks.
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Rotor seals: the most replaced autosampler part
The rotor seal in your injection valve handles every single injection cycle. On a busy system running 50+ injections per day, that's thousands of high-pressure seal/unseal cycles per month. Certus rotor seals for Agilent 1100, 1200, 1260, and 1290 autosamplers deliver the same sealing performance and lifetime as OEM parts.
Needle assemblies and seats
A scored or bent needle causes carryover between injections. A worn needle seat leaks. Together, they cause most autosampler-related chromatographic problems. Our needle carrier assemblies for Agilent 1260 and 1290 Infinity G1367 series high-performance autosamplers are precision-manufactured drop-in replacements.
Piston seals for metering devices
Your autosampler's metering device has its own piston seal, separate from your pump. The Certus 40µL piston seal fits Agilent G7129B, G4226A, and G7167B autosamplers and should be part of every preventative maintenance cycle.
Sample loops
Stainless steel sample loops fatigue over time, particularly under UHPLC pressures. We stock loops in standard volumes for Agilent G1367D and other high-performance autosamplers.
Complete PM kits: everything in one box
Instead of ordering parts individually, our autosampler PM kits for Agilent 1100 and 1200 series (G1313, G1313A, G1327A, G1329A) bundle all the wear items together. One kit, one order, one scheduled maintenance window. It's how smart labs manage instrument uptime.
Preventative over reactive
The real cost of autosampler failure isn't the parts. It's the failed runs, repeated injections, and wasted samples. A £50 rotor seal replacement every 6 months prevents £500 in wasted instrument time. Certus makes that maths even more compelling.
