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DISSOLVED OXYGEN CONTRAII ON - mg/1
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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 -
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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
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Sample d e s c r ip t io n :
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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 -
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