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PCB Etchant (NH4)2S2O8 Weight 4 Ounces Volume 4 Fluid Ounces Chemical Formula (NH4)2S2O8 Purity Ultra-Pure 100% Odor None Consistency Dry Crystals By-Products Oxygen You are purchasing 4 Ounces (by weight) of Printed Circuit Board Etchant. The item ships in a 4 Fluid Ounce Polypropylene bottle. SUGGESTED USE Mix this product with water to make your own etching solution. 4 Ounces makes 16 Fluid Ounces (448 mL) of Solution. 16 Fluid Ounces of Solution etches 280 in2 of PCB. This etchant remains clear as it dissolves the copper from the board so you can monitor the etching process (unlike Ferric Chloride solution, which turns black). No heating or agitation required. Etching time is 5-15 minutes at room temperature. Spent solution can be neutralized with Baking Soda (Sodium Bicarbonate). The spent solution contains Copper Sulfate. FREE EXPEDITED SHIPPING We ship THREE TIMES A DAY, 7-Days a week. Your item is guaranteed to be in the mail the SAME DAY you place your order. Transit time from California is 2-4 days throughout the USA. Our bottles are made of sturdy polypropylene. We shrink-wrap the screw tops and seal the bottles in plastic to ensure a spill-free journey.

15.00 PCB Etchant (NH4)2S2O8 Weight 5 Ounces Volume 4 Fluid Ounces Chemical Formula (NH4)2S2O8 Purity Ultra-Pure 100% Odor None Consistency Dry Crystals By-Products Oxygen You are purchasing 5 Ounces (by weight) of Printed Circuit Board Etchant. The item ships in a 4 Fluid Ounce Polypropylene bottle. SUGGESTED USE Mix this product with water to make your own etching solution. 5 Ounces makes 18.6 Fluid Ounces (550 mL) of Solution. 18.6 Fluid Ounces of Solution etches 350 in2 of PCB. This etchant remains clear as it dissolves the copper from the board so you can monitor the etching process (unlike Ferric Chloride solution, which turns black). No heating or agitation required. Etching time is 5-15 minutes at room temperature. Spent solution can be neutralized with Baking Soda (Sodium Bicarbonate). The spent solution contains Copper Sulfate. FREE EXPEDITED SHIPPING We ship THREE TIMES A DAY, 7-Days a week. Your item is guaranteed to be in the mail the SAME DAY you place your order. Transit time from California is 2-4 days throughout the USA. Our bottles are made of sturdy polypropylene. We shrink-wrap the screw tops and seal the bottles in plastic to ensure a spill-free journey.