Rachel,
We recommend 1.25gms. of Plasticized Benzoyl Peroxide to 100mL of Solution A for the catalyzed solution for infiltration. This is the recommendation for the new kit with the BPO in a small glass bottle. If you were using the older material that can in a can with a small plastic bag of BPO it is 0.9gm. per 100mL.
Solution B is used at a rate of 1mL per 25mL of freshly prepared Solution A with BPO. We do not recommend using more than 1mL of Solution B per 25mL as it will soften the blocks. Reducing Solution B should be done slowly and in very small increments to harden blocks. The blocks should be stored in a desiccator with DriRite or other desiccant to maintain harder blocks.
Pam Marcum