Laserfiche WebLink
residual and for no less than tiven0 fora• (24) hours at <br />140 degree F. <br />2. The City reserves the right to run performance tests once <br />a month. <br />3. Any product i ch, in the City's opiniar, does not vreet <br />the specified performance requirements or fails to <br />comply ivith the specifications ivill be disqualified. <br />D. COVERAGE <br />These specifications cover pyrophosphate compounds used to stabilize or <br />sequester soluble iron and manganese in potable water. <br />E. PHYSICAL FORM <br />Product shall be a granular Form. Powdered material will not be accepted. <br />PHYSICAL STANDARDS <br />Phosphate blend shall comply with the following physical requirements: <br />1. Color: While <br />2. Solubility: Completely miscible in ivater <br />3. Percent Phosphate as PO4 Mininnon of 80% <br />4. Physical Form: Granular <br />G. CHEMICAL STANDARDS <br />i. Phosphate blend shall contain only NSP approved phosphorous ingredients. <br />ii. No amines or other chelating agents shall be used. <br />Blended phosphate product formulation shall be only sodium salts of <br />phosphate compounds. <br />iv. No potassium salts shall be used. <br />v. Impurities in pyrophosphate products shall not exceed the following <br />concentrations: <br />Arsenic as AS <br />0.001 mg/1 <br />Co eras CU <br />0.2 m <br />/1 <br />Heavy Metals total as Pb <br />0.001 m <br />/l <br />Iron FE <br />0.1 m <br />/I <br />Manganese as MN <br /><.05 mg/ <br />I <br />Organics as C <br />None <br />Silica as SIO2 <br />1.0 <br />Zinc as ZN <br />0.01 m <br />/I <br />