10
30
50
70 100 120 140 160 180
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1,2-Hexanediol
2,4-Dinitrophenol
4-Nitroaniline
N-nitroso-di-n-propylamine
Pentachlorophenol
4-Nitrophenol
Benzoic Acid
Durability to Acid
ResponseRelative toC-14
ul aqueous HCl (pH = 1.4)
Figure 6
Repeated injections ofHCl onSiltek-deactivated tubing
