Factorial design viscosity

The experimental designs for mixture studies differ from the response surface designs discussed until now in only one important point. In a factorial design discussed in Chapter 3, we studied the influence of two factors — temperature and concentration — on reaction 3deld. Imagine that the levels of each of these factors were doubled. As a consequence, we would expect that not only the yield would be affected, but also the properties of the final product, such as, say, viscosity and optical density. 

Khanvilkar, K.H. Ye, H. Moore, A.D. Influence of hydroxypropyl methylcellulose mixture, apparent viscosity, and tablet hardness on drug release using a 23 full factorial design. Drug Dev. Ind. Pharm. 2002, 28 (5), 601-608. 

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