This water-soluble paint meets TSCA and EINECS/ELINCS safety standards. It’s nontoxic, solvent free and it conducts electricity. The conductive electric paint pen can be used with direct current power sources up to 12 Volts. This ‘liquid wire’ is a perfect addition to art projects and is also fantastic as a teaching tool. Tube is .8 ounces and should be used within 6 months of opening the package. When it’s time for clean up, all you’ll need is soap and water. A creative, nerdy gift that’s compatible with a wide range of electrical components, PCBs and e-textiles.