Tissue Salt No.6 - Kalium PhosphoricaCell Salt No. 6 Kalium Phosphorica is the constitutional Tissue Salt for Birthdates March 21 to April 19. The long term Biochemic approach is augmented by supplying the Bridge Salts corresponding to the months between birth retrograde to the time of conception, which may include Natrium Sulfuricum, Kalium Muriaticum & Calcarea Flourica for those with Kalium Phosphoricum as their Constitutional Salt.