Yes other day I made mistake saying 5.8s what our machines do, it's 6.5 had go back look. https://investorshub.advfn.com/boards/read_msg.aspx?message_id=153722234&txt2find=5.8 I agree there will be a lot uncertainty per actual effectiveness of crystals especially with humidity n age factors,,, much testing coming. grrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr' e