€1,799.23excl. VAT
In stock
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Critical flow controller with adjustable airflow, LCD display, pressure ports, and USB printer interface for DPI testing.
The ERWEKA TPK 2 Critical Flow Controller Valve Box is a testing unit for dry powder inhalers (DPIs). It regulates airflow from a vacuum pump to support pharmacopoeial testing of emitted dose and fine particle dose, which are influenced by the strength and duration of patient inhalation.
The TPK 2 is suitable for pharmaceutical quality control, inhalation product development, and laboratory testing workflows involving dry powder inhalers and critical flow control.
The unit is described as being in very good cosmetic condition and has been functionally tested.
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.
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
€1,799 sits above most air velocity and flow equipment here. The middle half of the 172 with a price runs from €348 to €1,013.
3 other listings of this model are available.
