OPTIMASI SODIUM LAURIL SULFAT DAN NATRIUM CHLORIDA PADA SABUN CAIR EKSTRAK LIDAH BUAYA: SIMPLEX LATTICE DESIGN

This study aims to determine the concentration of SLS and NaCl which can produce best formula aloe vera extract liquid soap (Aloe L.). The method used in this is Simplex Lattice Design method. Eight formulas were made with different concentrations NaCl, then parameters viscosity, specific gravity, foam resistance, pH determined. data obtained was tested one sample t-test see difference between software's design expert predicted results from optimization laboratory tests. From testing 8th parameter formula, that has closest desire ability value 1 chosen as optimum namely at a 180 g 65 NaCl. t test carried out values. significant values ​​obtained for resistance 0.570; 0.245; 0.882; 0.069. means there no ​​between software laboratory. It be concluded variation formulation produces ​​that meet quality requirements such viscosity 3270 Cp, Specific Weight 1.079 g/ml, 67%, 6.73.