From€669.3excl. VAT
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Portable turbidity meter with infrared ISO 7027 method, ±1% accuracy, TFT display, ideal for water quality and environmental monitoring.
The Apera Instruments TN400 Portable Turbidity Meter is a precision ISO 7027 compliant nephelometric turbidity meter featuring an infrared light source and a 90° nephelometric measurement geometry. Designed for both in-field and laboratory applications, it measures turbidity levels ranging from 0 to 1000 NTU with an accuracy of ±1% or 0.02 NTU, whichever is greater, suitable for environmental monitoring, water treatment, beverage production, and bioprocessing quality control.
Key technical features include a large colored TFT display providing clear graphical and textual operation guidance, facilitating easy calibration and real-time data interpretation. The meter uses EPA-certified, non-toxic high-molecular polymer turbidity standard solutions (0.02, 20.0, 100, 800 NTU) for reliable, NIST-traceable calibration, essential for molecular diagnostics and synthetic biology research requiring precise water quality assessments.
The TN400 supports microbiology, clinical diagnostics, and biotechnology workflows by enabling accurate turbidity measurements necessary in water-based processes, including biomanufacturing and molecular cloning workflows. The robust design ensures usability in both laboratory and field environments, making it widely adopted in environmental biotechnology and live-cell imaging sample preparation where water purity is critical.
This portable turbidity meter is critical in molecular biology and biotechnology research fields requiring precise, reliable turbidity analysis for water samples, supporting sustainable bioprocessing and environmental monitoring workflows.
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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 1 November 2026
€669 sits in the middle range particle counters here. The middle half of the 38 with a price runs from €355 to €5,981.
