These are disc-type replacement dirt particle filters for Testo's modular flue gas probes with a standard probe handle, used on instruments such as the Testo 300 Pro, Testo 340 and Testo 350. They fit into the sampling probe and catch dirt or dust entering the sampling port, protecting the sensitive components of the gas sampling system from contamination.
The filters are disc-shaped, 29.7mm in diameter and 2.9mm thick, and supplied in white. This is a different format from the cylindrical filters used on compact flue sampling probes (such as part 0554 0040) — before ordering, confirm which type of probe is fitted, since the two formats aren't interchangeable.
Key Features & Benefits
Pack of 10: Covers scheduled replacement intervals and on-site spares.
Disc-Style Filter, 29.7mm Diameter: A different format from compact probe filters; confirm probe compatibility before ordering.
Protects Sensitive Probe Components: Filters dirt and dust to maintain measurement accuracy and probe lifespan.
For Modular Flue Gas Probes: Fits the standard probe handle used with instruments such as the Testo 300 Pro, 340 and 350.
Ideal For
Routine maintenance of Testo gas sampling probes requiring 29.7mm disc-style filters.
Keeping a stock of replacement filters to avoid measurement downtime.
Why Buy This Product?
Replacing the dirt filter regularly is a small, low-cost step that protects sensitive probe components from dust and particulate that would otherwise reach the sensors. Since the disc format is specific to modular flue gas probes with a standard handle — different from the cylindrical filters used on compact probes — confirming probe type before ordering avoids buying the wrong format.
Order the Testo Spare Dirt Particle Filters (Pack of 10) online today.
Specification
Testo Spare Dirt Particle Filters - Pack of 10 Specification
Brand
Testo
Part Number
0554 3385
Product Type
Spare Dirt Particle Filters
Pack Quantity
10 Filters
Filter Style
Disc
Diameter
29.7mm
Height
2.9mm
Colour
White
Weight per Pack
12g
Compatible Instruments
Testo 300 Pro, 340, 350 (Modular Flue Gas Probe, Standard Probe Handle)
Features
Testo Spare Dirt Particle Filters - Pack of 10 Features
Pack of 10: Covers scheduled replacement intervals and on-site spares.
Disc-Style Filter, 29.7mm Diameter: A different format from compact probe filters; confirm probe compatibility before ordering.
Protects Sensitive Probe Components: Filters dirt and dust to maintain measurement accuracy and probe lifespan.
For Modular Flue Gas Probes: Fits the standard probe handle used with instruments such as the Testo 300 Pro, 340 and 350.
