Caustic Soda Sodium Hydroxide Lye 98% Powder 5KG Tub Drain Unblocker/Cleaner
Sodium Hydroxide CAUSTIC SODA 99% – for soap making, buy from UK supplier – HD Chemicals LTD
SC Johnson
Instant Power 1650 Crystal Lye Drain Opener – 1 Lb, Quick Action Sodium Hydroxide for Sinks and Drainage Systems | Plumbing Solutions : Amazon.ca: Health & Personal Care
3 uses of Caustic Soda: Cleaning, Pipes Unblocking and Disinfecting - Blog - HD Chemicals LTD