00:00 - Introduction

01:35 - We have learned from past mistakes

04:40 - The history of the Orenda Calculator™ formula

05:51 - Dr. Langelier's original formula = pH - pHs

10:47 - Revisions to the LSI in 1942, 1964, 1965 and beyond

12:32 - Technology is not limited by reference charts

14:29 - The LSI charts today are based on the updates by John Wojtowicz

17:22 - Wojtowicz wrote about the pH Ceiling concept

19:19 - The most precise LSI calculator in the world

22:55 - Wrap up 

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