Design of Experiments
Articles on factorial and response-surface designs, mixture experiments and statistical practice in formulation.
A polymer, two resins, plus fixed antioxidant and chalk: instead of a constrained three-component mixture design, two ratio factors – polymer share and resin split – turn the problem into a classic 2² design that speaks the formulator's language.
Read moreA crosslinker at 0.1 % looks like a harmless third component in a mixture design with a PSA dispersion and a tackifier. In reality it produces meaningless coefficients, an ill-conditioned model and hidden confounding – here is why, and how to set up the experiment properly.
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