[FILTER BED MATERIALS,] CERAMIC LIQUIDFILTERS, [AND LIQUID STERILIZING APPARATUS COMPOSED OF A STORAGE TANK LINED WITHCHLORINE RESISTING MATERIAL AND FITTED WITH A CLOTH STRAINER, STERILIZING AGENT FOR THE CONTENTS OF THE TANK, A COMBINEDDECHLORINATING AGENT AND A BED OF] STERILIZING MATERIAL COMPOSED OF SAND [OR ACTIVATED CARBON WHEREIN OR WHEREON SILVER HAS BEEN DEPOSITED AND LIQUID FLOW CONNECTIONS BETWEEN THE TANK AND UNIT AND ADRAW-OFF CONNECTION THE UNIT.]

'activ':46 'adraw':66 'adraw-off':65 'agent':26,35 'apparatus':9 'bed':2,38 'carbon':47 'ceram':4 'cloth':23 'combineddechlorin':34 'compos':10,42 'connect':58,68 'content':29 'deposit':54 'filter':1 'fit':20 'flow':57 'line':15 'liquid':7,56 'liquidfilt':5 'materi':3,18,41 'resist':17 'sand':44 'silver':51 'steril':8,25,40 'storag':13 'strainer':24 'tank':14,32,61 'unit':63,70 'wherein':48 'whereon':50 'withchlorin':16

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