500mg / L means in the normal mixing ratio, the effective chlorine content of 500mg / L. That is to say, 1 to 50 is 10ml 84 with 500ml of water, but this ratio is what the amount of 0 0, I only know my mom cleaning home are 1 to 180 ~ 200 said ... ... Give you a few data for reference, I hope to help you ~ general objects (furniture, sanitary ware, white clothing): ratio of 1:180, soak 10 minutes; infectious disease people contaminated objects: ratio of 1:18, soak 40 minutes; fruits and vegetables: ratio of 1:180, soak 10 minutes; dining utensils: ratio of 1:138, soak 15 minutes.