New Guidance on Harmful Algal BloomsThis toolkit contains resources for implementing freshwater algal toxin testing or updating existing protocols. Our Publications APHL publishes a range of standing publications, including a magazine, blog, e-newsletter, quarterly APHL update and a newsletter covering environmental laboratory issues. Featured Resources APHL Publications, by Topic Lab Matters APHL in Action Bridges From APHL's LabBlog It looks like your browser does not have JavaScript enabled. Please turn on JavaScript and try again.