Sodium Hydroxide (also called caustic soda) is very valuable, important and very efficient pH correction agent that increases pH with the most waters. In the interest of operational safety at waterworks, Osorno discourages the often-seen use of 50% sodium hydroxide because of the danger that it poses to operators.
Osorno keeps the concentration of sodium hydroxide at 20% because it is not only user friendly concentration of sodium hydroxide, but also, it allows easy pH adjustments for waters with low buffer capacity (or alkalinity). Osornos' Sodium Hydroxide 20% is ANSI 60 certified.
Please contact Osorno if advise is required for sodium hydroxide application.