> hours for 90% disappearance 
80,000 /ml. at the boil 
ro) 
b 
° 
w 
\ 
\ 
\ 9.5 Hours 17.6 Hours 
3 hours for 90% 
disappearance 
IW SZ SWYHOAITNIOD JO NdW 
ro) 
15,000 /mi. at 
the boil 
\ 
0 lO 20 
2aViEw@ Et A\N/ EL ROM QUT EARS 
