Review on π¦ Dry & Dry Premium 20 Pack Reusable Humidity Indicator Cards (10-60%) β 6 Spot β Includes 20 Cards by Tony Beale
Works great, easy to read
I use these in vacuum sealed bags to store filament for 3D printers. I have Dry & Dry silica packs. The humidity is very easy to see and read. At very low humidity levels it can be difficult to see a pale pink color but this is normal as it indicates a very low level.
- Best in class
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