The sponsoring societies, volunteers, and staff of Standard Methods for the Examination of Water and Wastewater dedicate Standard Methods Online and the Twenty-First Edition to the revered memory of Arnold E. "Archie" Greenberg. Read the Dedication
The Standard Methods Joint Editorial Board (JEB) has issued a memo in response to inquiries concerning revisions to Method 5210B 5-Day BOD Test. It clarifies the language regarding the recommended diliution series and covers both the 20th and 21st Editions.