Levosil patented since 1999, brown cobalt free silica gel is an alternative to cobalt chloride silica gel (listed between hazardous substances by EC since 1998).
Brown cobalt free silica gel combines the absorption power of silica gel to the color change, which helps you easily understand when silica gel is exausted, turning from brown to teal blue.
Others Raw Materials for the production:
Silica Gel
Silica gel is a synthetic product which has been used since 1940s to protect goods from damages caused by humidity. It has a micro porus surface which is able to hold water particles. DIN standards...