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F1 class 5kg stainless steel calibration weight for precise balance calibration in labs and quality control.
The Sartorius YCW653 5KG / F1 Calibration Weight is a high-precision stainless steel weight designed to meet OIML F1 accuracy class standards. This weight is essential for maintaining and verifying the accuracy of analytical and precision balances in laboratory, industrial, and quality assurance environments. Key features include:
This calibration weight is widely adopted in synthetic biology research, biomanufacturing, and clinical diagnostics laboratories where accurate measurement standards are critical for experimental reproducibility and regulatory compliance. Its robust design and high accuracy make it invaluable for calibrating balances used in molecular cloning workflows and other sensitive analytical procedures.
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 3 November 2026
The middle half of the 628 with a price runs from €71 to €1,759.
