tCheck assumes that there is some liquid in the tray during measurement and measures the darkness of the liquid. Liquids in the tray act as a lens and direct more light onto the sensors than air. This is a little like looking through an empty jar versus a jar filled with water. The filled jar magnifies the image slightly because of the way light bends through the water.
Reading next
Jan 3, 2025
Peichen Chang
Jan 3, 2025
Peichen Chang
Online Support 24/7
Friendly & Dedicated Team
100% Payment Secure
Your information is always secure with us.
Easy Return Policy
30-day satisfaction or your money back guarantee. See details
Leave a comment
This site is protected by hCaptcha and the hCaptcha Privacy Policy and Terms of Service apply.