This Ink refill pack has High color saturation, high fidelity, Ultrafiltration, no clogging caused, Weak acid or alkalescent formula, no corrosion problems, No bleeding, no smear, high print quality, Quick dry formula, satisfaction at high speed printing, Water base formula, no toxicity, no chemical hazards, no environment pollution, and it's suitable for canon 7240 pixma refillable cartridge. This Ink refill pack has High color saturation, high fidelity, Ultrafiltration, no clogging caused, Weak acid or alkalescent formula, no corrosion problems, No bleeding, no smear, high print quality, Quick dry formula, satisfaction at high speed printing, Water base formula, no toxicity, no chemical hazards, no environment pollution, and it's suitable for canon 7240 pixma refillable cartridge.This Ink refill pack has High color saturation, high fidelity, Ultrafiltration, no clogging caused, Weak acid or alkalescent formula, no corrosion problems, No bleeding, no smear, high print quality, Quick dry formula, satisfaction at high speed printing, Water base formula, no toxicity, no chemical hazards, no environment pollution, and it's suitable for canon 7240 pixma refillable cartridge.