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Precision 75mm King 7530 rotameter with 316L stainless steel internals, ±6% accuracy, for gas flow measurement.
The King Instrument 7530 Series Rotameter is a precision variable area flowmeter designed for accurate gas flow measurement in laboratory and industrial settings. Featuring a durable 75mm (3") cast acrylic body, this flowmeter incorporates 316L stainless steel internal components and a glass ball float, ensuring high chemical resistance and mechanical durability suitable for biotechnology and molecular diagnostics applications involving bioprocessing and synthetic biology workflows.
Key specifications include:
The King 7530 Series Rotameter is widely adopted in biotechnology research and biomedical engineering, providing reliable and repeatable flow measurement essential for gene editing protocols and other precision gas control applications. Its stainless steel internals and robust design make it well-suited for demanding bioprocessing environments requiring contamination-resistant flow monitoring solutions.
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.
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 24 October 2026
The middle half of the 172 with a price runs from €348 to €1,013.
