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Ink Cartridges, Toner and Refills
Watermark/Invisible Ink?
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[QUOTE="Laser Tek, post: 202948, member: 5523"] Hello DJ SRANKDADDY: I'm sure you're not referring to any printer-related stuff because what you're looking for doesn't exist yet in the market. :) Anyway, here's a list for heat-activated invisible ink: •any acidic fruit juice (e.g., lemon, apple, or orange juice) •onion juice •baking soda (sodium bicarbonate) •vinegar •white wine •dilute cola •diluted honey •milk •soapy water •sucrose (table sugar) solution •urine -I'm serious with the last one anyway. :) [/QUOTE]
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Watermark/Invisible Ink?
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