Biox conservation gel is ideally suited to cleaning situations where dissimilar metals are present. It is commonly used to clean verdigris from weapons, jewelry, and clock mechanisms. As with the conservation liquid above, objects cleaned with Biox Gel should be protected using a suitable sealant, wax, or polish. The pH of the gel is 2.7, slightly higher than that of the liquid. Sold in 1 kg. jars.