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It is the right stuff.

It is Sodium Tetraborate Decahnydrate and that is what you want.

Hey spade, take a look at Bill Ryan's post, it has quite a lot of information.

https://projectavalon.net/forum4/showthread.php?63939-The-Borax-Conspiracy&p=1308737&viewfull=1#post1308737

Or sms...