I have Lowry's book and responded to him with comments on it in 2007 since not everything in it is accurate. As for breakpoint chlorination, if you read the section on this I wrote in the first post, you will notice a link to this post which shows you where the 7.6 factor comes from and why this formula is misapplied and used incorrectly for Combined Chlorine (CC).thepoolpros.com said:as far as the breakpoint calcuation, it has become very unclear between different editions. The best description/explanation I have read is on Robert Lowry's Pool Chlorination Facts where he talks about multiplying the combined chlorine by 7.6 to determine the correct amount of FAC to add to reach breakpoint. Dr Lowry's books can be purchased on his website http://www.lowrycg.com/book.php
We can all make suggestions to the NSPF by emailing firstname.lastname@example.org . He is the CEO, and a very good one at that.
As for NSPF, I've had E-mail conversations with Tom Lachocki and sent him the file of my suggestions and I've also met him personally at last year's NEHA conference. He's a nice guy and very competent, but has not (to my knowledge) changed anything in the CPO course with regard to my recommendations such as including the factual chemical side effect tables (which is not controversial at all) or the hypochlorous acid tables when CYA is present, etc.