The experiment started off with concentrated bleach containing 8.25% sodium hypochlorite. He needed sodium chlorate so a hot plate was used to boil the bleach until crystals started to form.

Sodium hypochlorite is what most know as bleach ... To stop black spots from returning, apply this solution annually. This will kill any spores before they have the chance to germinate and will ...

Medically reviewed by Keri Peterson, MD Mixing bleach and ammonia can kill you. Bleach solutions and ammonia combine to form ...

Is your roof looking dirty or covered in moss? Those black streaks might be algae, and green clumps often mean a moss issue.