€250excl. VAT
In stock
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Portable noise dosimeter measuring sound dose 80-140dB, compliant with DIN 45 644 and ISO 1999 standards.
The compact, robust pocket-sized noise dosimeter 4428 operates independently and is designed to measure and calculate sound dose exposure typically measured by larger devices. It is worn personally by workers without impeding their activities and records the daily sound dose exposure.
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 23 October 2026
€250 sits above most noise measuring here. The middle half of the 5 with a price runs from €214 to €226.
