The most effective calcium hydroxide thanks to its high concentration and optimal calcium release. CALASEPT Plus has a very high content of calcium hydroxide - > 41% giving it a high concentration of hydroxyl ions. These generate a high pH value of 12.4 which has a pronounced bactericidal effect. The high concentration of calcium hydroxide in the paste provides for a long lasting release of calcium ions. CALASEPT Plus is a ready-to-use paste in air tight syringes for direct application through the Flexi-needle. CALASEPT Plus is radio-opaque.