TABLE II
Detectable Concentration of the Dye Solution by Sight
Dye conc. of the solution (ppm)
10
3
1
0.3
0.1
0.03
0.01
0.003
0.001
# of prepared ampoules
5
5
5
5
6
6
6
6
6
# of detected ampoules
5/5
5/5
5/5
5/5
6/6
1/6
0/6
0/6
0/6