WARNING TM    5-6630-215-12 e. A  summary  of  the  maximum  allowable  raw  water  constituents  for use  when  determining  the  preliminary  type  of  process  or  processes  in the  treatment  of  the  raw  water  source  is  contained  in  table  2-8. Table 2-8. Maximum Allowable Raw Water Constituents Test Paragraph 2-21a 2-21b 2-21h(4) 2-21c 2-21e 2-21e(1) 2-21g(6) 2-21d 2-21h 2-21f 2-21i Constituent Alkalinity Chlorides Chloride,   Demand Color Hardness,  Total Calcium Magnesium pH Sulfate Total Dissolved Solids Turbidity Coagulation No Limit 250  mg/l No Limit No Limit 250  mg/l 250  mg/l 125  mg/l No Limit 250  mg/l 500  mg/l No Limit Ion Exchange No Limit 3000  mg/l No Limit No Limit 2000  mg/l 2000  mg/l 125  mg/l No Limit 1500  mg/l 3000  mg/l *5 Units Distillation No  Limit No  Limit No  Limit No  Limit No  Limit No  Limit No  Limit No  Limit No Limit No  Limit No  Limit *If the turbidity exceeds 5 units, the raw water source must be pretreated using the coagulation process 2-21a(2). Dangerous  chemicals  are  provided  in  these  kits. Death,    health  hazards  or  injuries  such  as  severe burns, impaired   vision   and   internal   tissue destruction   may   be   experienced   if   personnel   fail to   observe   precautions. Do  not  allow  reagents,    buffer   solutions   or   acids to  come  in  contact  with  skin  or  eyes. Do not ingest   solutions,   tablets,   droplets   or   spillage from   lab-ware. Do  not  inhale  fumes  from  products  or  mixing reactions. Cyanide   is   extremely   poisonous. Potassium   cyanide   should   be   stored   away   from water  and  acids. Always   add   Cyanide   AFTER   ADDING Potassium   Hydroxide   and   NEVER   BEFORE. Many   products   furnished   are   highly   inflammable, some   have   explosive   potential. Most  acids  are corrosive. 2-53