Avoca Silver Nitrate Caustic Pencils are designed for multiple use for a single patient.
An Avoca Pencil contains approximately 350mg of silver nitrate & potassium nitrate mixture.
This is about 10 times more silver nitrate than an applicator.
This red carton and red plastic holder signals a 40% silver nitrate mixture.
From the date of manufacture, all Avoca Pencils have a 5-year shelf life.