Table 2

Actual Concentrations of Tween-80 and non-Tween-80 containing solutions at 0, 2, and 4 months stored at 4°C and protected from light.


Actual Concentration (% predicted)

Tween-80
Non-Tween-80

Predicted Concentration (in μM)
0 month
2 months
4 months
0 month
2 months
4 months

0.5
0.44 (88.4)
0.23 (45.4)
0.24 (47.8)
0.33 (67.4)
0.24 (47.8)
0.27 (53.5)
1.0
0.78 (78.1)
0.59 (58.9)
0.59 (58.6)
0.64 (63.5)
0.55 (54.5)
0.58 (58.2)
2.0
1.49 (74.4)
1.30 (64.9)
1.47 (73.4)
1.24 (62.2)
1.06 (53.0)
1.18 (59.2)
4.0
3.12 (78.0)
2.97 (74.3)
3.32 (83.0)
2.48 (62.0)
2.36 (59.1)
2.49 (62.2)
8.0
6.27 (78.4)
5.94 (74.3)
7.10 (88.8)
4.92 (61.5)
4.37 (54.6)
4.74 (59.3)
16.0
13.74 (85.9)
11.76 (73.5)
12.62 (78.9)
10.37 (63.1)
8.32 (52.0)
8.99 (56.2)
32.0
28.54 (89.2)
26.50 (82.8)
27.30 (85.3)
21.82 (68.2)
21.42 (66.9)
21.37 (66.8)
64.0
56.90 (88.9)
56.19 (87.8)
55.87 (87.3)
42.56 (66.5)
40.32 (63.1)
42.37 (66.2)
128.0
120.45 (94.1)
115.07 (89.9)
119.68 (93.5)
92.67 (72.4)
43.26 (33.8)
52.61 (41.1)

Kopec et al. Cough 2008 4:3   doi:10.1186/1745-9974-4-3