Not in stock, available to order through our sourcing team
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Broad-spectrum protease inhibitor cocktail in DMSO, protects proteins in mammalian cell lysates, stable at −20°C.
Sigma P8340 is a protease inhibitor cocktail designed to safeguard proteins during the preparation of mammalian cell and tissue extracts. This solution effectively inhibits a broad spectrum of proteases, ensuring the integrity of proteins for downstream applications.
First introduced prior to 2025, this protease inhibitor cocktail remains a trusted component in laboratories worldwide, reflecting Sigma's commitment to quality and innovation in the life sciences.
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 27 October 2026