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. 2008 May 27;4:3. doi: 10.1186/1745-9974-4-3

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)