---
title: "How do I capture the image of the test strip?"
description: "After dipping the strip, use your smartphone or tablet camera to take a photo of the strip within 10 seconds. Align the strip with the bottle to match the colour/ppm value. Ensure the image is focused on the sample, then confirm the result."
url: https://help.fernox.app/en/articles/75-how-do-i-capture-the-image-of-the-test-strip
collection: "Testing Samples"
updated: 2026-10-05
language: en
alternates: [es, de, nl, fr-be, nl-be, fr, ro, pl, sk, sv, cs, tr]
---

# How do I capture the image of the test strip?

After dipping the strip, use your smartphone or tablet camera to take a photo of the strip within 10 seconds. Align the strip with the bottle to match the colour/ppm value. Ensure the image is focused on the sample, then confirm the result.