Search site: Submit Search Nav Menu 2 Nav Menu 3 Nav Menu 4 Nav Menu 5 Nav Menu 6 Nav Menu 7 Nav Menu 8 MENU Open menu www.tustechshop.com Marking Machines Electrolytes Make your own Stencils Other Supplies, Spare Parts Toggle search bar 0 Search... Submit search Home > Electrolytes > EX-21 Electrolyte EX-21 has different effects on the metal surface.The following surfaces turn white or bright grey when etched with EX-21 (use AC Voltages):black oxide, blue oxide, The following surfaces turn black when etched with EX-21 (Use AC Voltages):carbide tools, graphite (24V DC), The following alloys can be deep etched with EX-21 (use 24 Volt DC):copper, brass, bronze Our Price: $15.50 Availability:: Usually Ships in 24 Hours Product Code: EX21 Qty: Description EX-21 has different effects on the metal surface.The following surfaces turn white or bright grey when etched with EX-21 (use AC Voltages):black oxide, blue oxideThe following surfaces turn black when etched with EX-21 (Use AC Voltages):carbide tools, graphite (24V DC), The following alloys can be deep etched with EX-21 (use 24 Volt DC):copper, brass, bronze Related Items EX-D20 Electrolyte DEV-1 Developer Solution N-1 Neutralite - Neutralizer, Cleaner EX-33 Electrolyte Our Price: $18.90 Our Price: $18.00 Our Price: $12.90 Our Price: $22.00 EX-10 Electrolyte EX-9B Electrolyte Our Price: $14.60 Our Price: $15.90