29 August 2015 Dear Sir (Madam), please help me- I have problem with understanding SLD calculator tool ( SasView 3.1.0 ). >From help for SLD calculator I have information that: I have such mixtures of two surfactants in D2O ( SANS experiment): 1:1 [0.022mol/l (TX-100)+ 0.022mol/l (CTAB) in D2O2:1 [0.044mol/l (TX-100)+ 0.022mol/l (CTAB) in D2O3:1 [0.066mol/l (TX-100)+ 0.022mol/l (CTAB) in D2O 1:1 [1.294%(TX-100)+0.7289%(CTAB)]=2%2:1 [2.588%(TX-100)+0.7289%(CTAB)]=3.4% 3:1 [3.882%(TX-100)+0.7289%(CTAB)]=4.6% CTAB = C19H42BrN with molar mass=364.45g/mol ; density=1.1g/cm3 TX-100=C14H22O(C2H4O)n n=9 ; molar mass=647g/mol ;density=1.07g/cm3 Please help me if it possible and write correct - as example for one from these systems - SLD for calculator in SasView program. And the next question - when and how I must add this result ( these results for all my next files) during fitting my files. Aldona Rajewska email: zaldona24@...10...