Standard Operating Procedure - Ultrafiltration - Department of ...

Oxidizer IntoleranceIf you have a reverse osmosis or nano-filtration system, the membranes have no tolerancefor oxidizers. Introduction of any oxidizers, especially chlorine (sodium hypochlorite),will cause permanent damage.Niro will not assume any responsibility for damaged membranes of oxidizers come incontact with the membrane.Defoamer IntoleranceUse of anti-foaming agents is not recommended since they can cause irreversible loss offlux.* If use of anti-foaming is necessary, please consult a Niro representative.No chemical that has not been approved by Niro should be used for membrane cleaningor shall come in contact with the membranes.Niro will not assume any responsibility for damaged membranes if unapproved chemicalscome in contact with the membranes.A common component of anti-foaming agents in silicon, which is the primary cause ofthe flux loss. Silicon is also found in many lubricants, which also should not comein contact with the67