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Service · Repair · CalibrationTesto instrument support, Canada
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Find answers, the right Testo manual, and practical device walkthroughs.

Device manuals

Find the operating manual for your exact model and generation.

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Frequently needed

Which devices does QRM service?

QRM provides service, repair and calibration for Testo instruments. Include the exact model and the work you need in the service form. We assess the device and available service options before quoting.

For another brand, contact that manufacturer or its service provider.

How do I send my Testo device to QRM?

Complete the online service form, keep the submission reference and include it with the instrument. Provide the model, serial number, symptoms, requested service and included accessories.

Confirm the current shipping destination with QRM before dispatch. Protect the instrument and probes against movement and impact during transit.

How do I find an existing quote or service order?

Use the customer portal with the account supplied by QRM. Your quote or sales order number starts with Q, for example Q000027555. Keep this number in correspondence about your device.

A Testo picking-order number is a shipping reference and is not the QRM job or calibration-certificate number.

Back in production support

Redesigned testo 320 & testo 330

Explore the current combustion analyzer workflow, annual calibration rationale and the sensor checks QRM uses to get these instruments ready for the field.

Explore 320 & 330 support

Illustrated device guides

Next-Gen testo 300 condensate outlet with its tethered sealing plug open; the manual highlights the outlet.
Next-Gen testo 300

Empty the condensate trap

Water visible in the trap? Check the outlet and seal.

View 3-step guide
Transparent filter chamber on the testo 310 II flue gas probe, with the manual arrow showing an anticlockwise opening turn.
testo 310 II

Check the 310 II probe filter

Inspect and replace the specified particle filter.

View 3-step guide
testo 550s/557s Bluetooth menu showing Bluetooth ON and the Completed button selected.
testo 550s / testo 557s

Reconnect Bluetooth probes or the app

Check the manifold’s Bluetooth setting.

View 3-step guide

Still need help with your device?

Include the model, serial number, exact error and checks already completed.

Start a service request

Support content checked 11 September 2026. View sources and manual guidance.