Re-formulated solution for Tin Oxide sensors, CCD/CMOS sensors and optics. The Eclipse Senor & Optic All-In-One Cleaner is the highest purity cleaner available, containing less than 5 parts per million (ppm) of contamination (the whitish residue left after evaporation). Each box contains a 59 ml. (2 fl. oz.) bottle with dropper applicator.