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• St � Y ` 104-22 <br /> inter nat iorLa1,,c <br /> Creative excellence for you! <br /> OPERATING BULLETIN <br /> EQUIPMENT <br /> Processing tanks, piping, pumps, and heat transfer surfaces <br /> constructed of mild or stainless steel with provide satisfactory <br /> service life. We recommend that all spray nozzles be made of 300- <br /> series stainless steel. <br /> INITIAL CHARGING PROCEDURE <br /> 1 . Fill the tanks to 2/, of the final volume with clean, <br /> cool water. <br /> 2 . Add the required amount of the product slowly; agitate <br /> to assist in thoroughly dissolving the material <br /> 3 . Add cool water to increase the volume to the operating <br /> level . The solution is then ready to be heated to <br /> operating temperature. <br /> SOLUTION CONTROL <br /> Material : 10 ml . pipette <br /> 125 ml . glass flask <br /> ' Automatic titrating burette assembly <br /> Indicator #1 (PTH) <br /> Titrating Solution #8( 1/1N Alkali ) <br /> Titrating Procedure: <br /> 1 . Pipette a 10 ml . sample of the bath into a 125 ml . glass <br /> flask. <br /> 2. Add 3-5 drops of Indicator #1 . <br /> 3 . Titrate with Titrating Solution #8 until the solution <br /> becomes just noticeably pink. <br /> Concentration: mis. of T.S. #8 required times the product factor, <br /> 0 .4 equals the concentration in ounce per gallon of <br /> product in solution. <br /> mis T.S. #8 oz/gal . lbs 100 gal . <br /> 2 .5 1 61/. <br /> 3 . 8 11/2 93/,, <br /> 5.0 2 121/2 <br /> 10 . 0 4 25 <br /> Alternate Test Procedure: #4PD-1 , using Test Kit #ZD-1 , <br /> with a product factor of 0 . 40. <br /> 2 <br />