Product Name: Iron Oxide Pigment. Specifications: 100g. Instructions for use: When the cement is in the form of a powder, no mortar is mixed. At this point, you can add toner as follows: 1. Calculate the amount of toner to be added according to the toner: cement = 1:25; 2. Wear gloves and a mask; 3. Pour the toner into the cement. 4. Mix the cement and toner evenly. 5. Mix cement and toner with mortar.