Document ZVr9VBvMbdJKrxLRRr15GwQ8

DISSOLVED OXYGEN CONTRAII ON - mg/1 BACK TO MAIN Z ra< < a a3 a* u u- Z 1NU3J J avn z TIME - minutos BACK TO MAIN 3M E n v ir o n m e n t a l L a b o r a t o r y A cu te T o x i c i t y o f a Compound (S u b s ta n c e ) t o - A c t i v a t e d S ludge, M ixed U g jja r P r o t o c o l R e f e r e n c e : EAR 11 / 8 / ? 0 Lab re q u e s t n o .: D a t e : / `' / i f j & ' i - A nalyst; CJ,A< The a c tiv a te d sludge m ixed liq u o r was c o lle c t e d from the S t. P a u l/M in n e a p o lis M e tro W a s te w a te r P la n t on . . Sample d e s c r ip t io n : ^^ P r e p a r a t i o n o f s t o c k s o l u t i o n : 0<(<?o gram s o f s a m p le w e r e d i l u t e d t o j o o w ith d eionized reagent w a te r. Date o f p re p a ra tio n ; /*//3 " /< y a - . ml TIME min. sec. 1 3o / A 3-- c th fiP M^JERIAl io 5 E, f mg/1 mg/1 dC Io nWtr o l , vW 7 < 3 iT r .. . '' ' ^ 5Tsr ,GEM W LUC mg7 y r-- ^ .7 0 7 .3 T /*oo <& / . 7 r p - -i p n f~ 7 -1 **'1 1k i - ------------- - -- -- 2o 7 S> > * "0 -yv----------- ---------- - '-P 7. 'J v* i . \ . ' V; . ` ; -f -r- [ *7.1 " v!` ' i' ;,'. ;, 1` '` / '.' ' .. ` . Vv-r COMMENTS: