Moisture paper that turns red when exposed to water?

[Suspicious-Teach8788]

Its stuff they put in devices sometimes and if they're red you know they were exposed to water/moisture.

I don't know what it's called. It's not litmus paper i think because that stuff tests for acidity. This just tests for moisture/water.

 

[car3]

just use regular paper, it turns wet when exposed to water

 

[JulesMaximus]

Originally posted by: car3
just use regular paper, it turns wet when exposed to water

:laugh: Yeah, most stuff turns wet when exposed to water.

 

[mercanucaribe]

Maxi pads turn red when exposed to "moisture" according to the ads.

 

[Lonyo]

Anhydrous cobalt chloride paper?

 

[Viper GTS]

Google humidity indicator cards.

Viper GTS

 

[jadinolf]

Originally posted by: JulesMaximus

Originally posted by: car3
just use regular paper, it turns wet when exposed to water

:laugh: Yeah, most stuff turns wet when exposed to water.

:laugh::thumbsup:

 

[Sphexi]

Cobalt-chloride is the most common ones, you can find them in most hardware stores in the US. Over in Europe I'm pretty sure they outlawed them for causing cancer or something stupid like that, but they make cobalt-free ones now.