Specifications include, but are not limited to: a. The awarded Contractor shall deliver Membrane Grade Sodium Hydroxide in 50% solutions in conformance with ANSI/AWWA Standard B501-13, “Standard for Sodium Hydroxide (Liquid Caustic Soda)”, latest edition, from North America only. Toho will not accept Sodium Hydroxide sourced from foreign countries. It is the responsibility of the Contractor to inform Toho if NSF or UL Certification has been revoked or lapsed within 24 hours of the time the Contractor receives verbal or written notification. Loss of Certification may be sufficient grounds for immediate termination of the Contract. b. The sodium hydroxide shall be suitable for treating water supplies and shall not contain any harmful impurities, nor shall it contain any impurities that would impart a taste or odor to the drinking water. c. The sodium hydroxide shall not contain any soluble mineral or organic substance in quantities capable of harming the health of those consuming water, which has been treated with liquid sodium hydroxide. d. The sodium hydroxide shall contain no additives or detergents. e. The sodium hydroxide shall meet or exceed ANSI/AWWA Standard B501-13 or subsequent revision. In addition, shall be listed by NSF as being in full compliance with NSF Standard No. 60 for Drinking Water Treatment Chemicals – Health Effects.