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. 2019 Dec 19;9:19458. doi: 10.1038/s41598-019-55761-z

Table 3.

The levels of the independent variables in the analysis of LEVO and MOXI.

Factor Level
−1 0 1
A ACN [%] 20 30 40
B TEA [%] 0.5 1.0 1.5
C NaH2PO4 [mM] 10 30 50
D pH 2 3 4