---
title: How is the D3M ID calibrated?
description: It's self-calibrating!
---

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1. [FAQs](https://help.kromek.com/faqs?hsLang=en)
2. [D3M ID](https://help.kromek.com/faqs/d3m-id?hsLang=en)

# How is the D3M ID calibrated?

## It's self-calibrating!

The D3M ID self-calibrates using naturally occurring K-40. As a result, the D3M ID does not have to be calibrated annually. The device can be used continuously in the field over many years and still retain its calibration.

If you require a regular factory calibration check, service plans with annual calibrations options are available.

Full calibration of the device takes at the Kromek UK facility.

If you need your device to be sent back to Kromek for a full calibration, [submit a service ticket on the Kromek Customer Portal.](https://help.kromek.com/customer-portal?hsLang=en)

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