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. 2018 May 3;12:7. doi: 10.1186/s13036-018-0097-4

Table 1.

Range of parameters used for Placket Burrman design

Parameter Label Codes
+1 -1
Substrate Conc. (%) X 1 0.5 5
FeSO4.7H2O (%) X 2 0.07 0.13
KH2PO4 (%) X 3 0.2 0.6
Yeast extract (%) X 4 0.15 0.5
MgSO4 (%) X 5 0.06 0.12
CaCl2 (%) X 6 0.025 0.125
Peptone (%) X 7 0.03 0.05
CoCl2 (%) X8 0.05 0.1