Originally Posted by royalflash
I tried an experiment and left some out over night in a tin lid- it had not hardened after 12 hours at all- I think I might as well throw this stuff away and get some from an auto parts shop
Some cements have complex setting criteria- anaerobic,thin-film,pressure etc. The only true way to test would be same way it's intended to be used- try putting some on a spare nut and bolt and see how it does.
Loctite will not harden in the presents of air, its an anaerobic compound. test it and make sure the test bolt is tightened snug(air must be totally squeezed out) or it may not work. Then give it a full 24 hours to harden.