Expired API test kit vs New

[dirtyd61]

I mixed some ammonia chloride in RO water and circulated it to test a API kit I found in my storage that expired in 2020 vs a new one. Here’s the ammonia results . Don’t be tempted to use expired kits.

Left is new kit, right is 2020 exp.

 

[Ron Reefman]

Good info to share! Thanks.