1) Measure method (optional) : single pump and single gauge with lock or double pump and double gauge with lock or digital display gauge with lock 2) Min. discharge: 1/96oz or 1/192 or 0.1ml or 1/384 oz (depending on the measure method) 3) Max. discharge: 2 oz (59ml) 4) 6 or 7 or 8 containers optional. 5) White or black of the color for the canisters optional. 6) Unit of ml or oz optional. 7) Applicable for: water colorant or oil colorant. 8) Capacity of the canister: 2.1 liter 9) Optional model: TS-416, TS-417,TS-418, TS-426, TS-427, TS-428, TS-436, TS-437,TS-438