Mobile phase absorbance measured against air or water (Continued)
Absorbance at specified wavelength (nm)
200
Unstabi-
2.44
lized
tetrahydro-
furan (THF,
fresh)
Unstabi-
>2.5
lized
tetrahydro-
furan (THF,
old)
Acids and bases
Acetic acid,
2.61
1%
Hydro-
0.11
chloric acid,
0.1%
Phosphoric
<0.01 —
acid, 0.1%
Trifluoro-
1.20
acetic acid
Diammo-
1.85
nium
phosphate,
50 mM
Triethy-
2.33
lamine, 1%
Buffers and Salts
Ammonium
1.88
acetate,
10 mM
Ammonium
0.41
bicarbonate,
10 mM
106
205
210
215
2.57
2.31
1.80
>2.5
>2.5
>2.5
2.63
2.61
2.43
0.02
<0.01 —
—
—
0.78
0.54
0.34
0.67
0.15
0.02
2.42
2.50
2.45
0.94
0.53
0.29
0.10
0.01
<0.01 —
220
230
240
1.54
0.94
0.42
>2.5
>2.5
>2.5
2.17
0.87
0.14
—
—
—
—
—
—
0.22
0.06
<0.02 <0.01 —
<0.01 —
—
2.37
1.96
0.50
0.15
0.02
<0.01 —
—
—
250
260
280
0.21
0.09
0.05
>2.5
2.5
1.45
0.01
<0.01 —
—
—
—
—
—
—
—
—
—
—
0.12
0.04
<0.01
—
—
—
—
—