From€141.33excl. VAT
In stock
Can't find what you're looking for?
Purospher RP-18E C18 guard cartridges, 20 × 4 mm, 5 µm, supplied as a 13-piece pack.
The Merck Purospher RP-18E Security Guard Cartridge is a reversed-phase C18 HPLC guard cartridge designed to protect analytical chromatography columns from particulate contamination and strongly retained sample components.
These C18 guard cartridges are suitable for HPLC workflows in pharmaceutical analysis, biotechnology, molecular diagnostics, synthetic biology, and analytical research.
Lab equipment markets are fragmented. Buyers spend weeks calling distributors, comparing quotes, and verifying supplier reliability. Sellers struggle to reach global research labs.
We built Questpair to fix this. Every supplier on the platform is verified before listing. Every quote you receive comes from a real, vetted seller. AI prepares your case in minutes, then a real specialist takes over.
We're an independent team based in The Netherlands, working with research labs and procurement teams across Europe and worldwide.
With a service contract, ten to fifteen years is normal for most benchtop instruments. Detectors and pumps are the parts that wear first.
Often, yes. Verified suppliers frequently work with service partners converting the instrument. If applicable, we can list servicing options alongside the offer.
Ask a scientist through the request button. Parts are often available even when the instrument itself is discontinued.
Two to six weeks, depending on refurbishment scope and whether calibration is included.
We ship to 38 countries. Crating and customs handling are quoted with the instrument.
Tell us what you need and a scientist finds it for you, usually within the hour.
Last updated 5 November 2026
€141 sits in the middle range hplc accessories here. The middle half of the 349 with a price runs from €60 to €300.
1 other listing of this model is available.
