Document NN2OpX25K87qLdgaw2akrZgpw

F.R. Johannaen, A2SC November 4, 1974 Acute Fish Toxicity BTL-74-67 through -73 B. H. Munch * ,W. 8. Papageorge - B2SK W. R. Richard - T3A The accompanying reports contain the results obtained from the 4-day static fish toxicity studies with the following materials: Product LottNo, Report No. MCS 1238 MCS-1425 (flea 1489VtoIBBB MCS 1633 MCS 1717 MIC 200219 MIC 239401 MIC 242386 me 267103 MIC 250467 MIC 267149 BTL-74-67 BTL-74-68 btl-74-69 BTL-74-70 BTL-74-71 BTL-74-72 The 4-day LC=n values were determined from the raw data according to the method of Weil, C.S. 1952. Biometrics 8(3): 249-263. In order to calculate LC^0 values from the data, using the above method, necessary Assumptions of mortality were made, as Indicated below. The following table summarizes the results of these studies. Product Rainbow MCS 1238 MCS 1475 MCS 1489 MCS 1588 MCS 1633 MCS 1717 2.0 40.0* 3.2 3.2 2.6 1.6 3.2 *>100.0 3.2 1:1 2.6 Fish mortality assumed to be 100$ ataa dosage level of 1,000 ppm. MCS 1475 Is considered to elicit a mild to low order of toxicity to rainbow trout and blueglll, respectively. Each of the other MCS products la considered to be moderately toxic to both fish species. /bkp rec. reports Frederick R. Jbhannsen MONS 031507