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Precision 50mm King 7530 Series rotameter with 316L stainless steel parts, ±6% accuracy, 4 SCFM air capacity
The King Instrument 7530 Series Rotameter is a precision-machined variable area flowmeter engineered from durable cast acrylic for clear fluid visibility and reliable performance. Featuring 316L stainless steel internal components and chemically resistant EPR O-ring seals, this flowmeter ensures high accuracy and repeatability essential for critical fluid measurement in molecular diagnostics and bioprocessing applications.
This rotameter's robust design and consistent flow measurement capabilities make it suitable for biotechnology laboratories and industrial processes where accurate air or gas flow monitoring integrates with molecular biology and bioprocess control systems. The 7530 Series is a reliable choice for researchers and process engineers looking for a durable, high-precision flowmeter calibrated for critical biotechnological and clinical diagnostic applications.
Lab equipment markets are fragmented. Buyers spend weeks calling distributors, comparing quotes, and verifying supplier reliability. Sellers struggle to reach global research labs.
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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.
Yes. Every verified supplier states which service partners cover the instrument, and we list that 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 19 October 2026
The middle half of the 44 with a price runs from €295 to €2,206.
