Calculation of the RHLB in oil phase We measured saponification and acid indexes and calculated the HLB of each oil phase using equation 2. Table 6 shows results of saponification and acid indexes and balance lipophilic hydrophilic (HLB) for rapeseed oil, salmon oil and soya lecithin. The HLB of the Miglyol 812 is 15.36 according to Macedo et al