1. With the blue caps in position wash the outside of every fluoride clear out Elements with water and mild dishwashing soap, then rinse. With clean hands, remove both blue caps from every single end of both filter Elements. 2. Place the rubber priming button (tan colored) onto one end of a fluoride filter out and align the hole of the filter with the hole of the rubber washer. Press the priming button up against the sink faucet so that the priming button creates a seal between the tap and the Fluoride Filter. Place your thumb on peak of the tap to use pressure, to create a extra in-depth seal (as viewed in picture). 3. While keeping the priming button against the faucet, switch on the cold water slowly, permitting water to fill the cavity of the clear out and motion from the alternative end. Allow water to go for at least 30 seconds or until water runs clear. 4. Turn the Fluoride filter over and prime the choice finish (reversing the movement of water) repeating steps 3-5 till water runs clean from either directions. 5. To choose if the clear out is absolutely primed, assemble the filtered water in a transparent glass and keep it as much as the sunshine to seem if all of the cloudiness is gone from the water, if no longer continue priming till water is clear. This filter is now primed and ready to install. Repeat priming steps 1-7 for every extra Fluoride Filter. Material: plastic colour: White Package Contents: 2 x Water Filter(Due to numerous product batches, the advent of the weather at the product might even be different, but this does not impression use) Only the above kit content, assorted merchandise should not included. Note: Light mirrored image and varied reveals can cause the color of the object within the picture a little diversified from the genuine thing. The length allowed error is +/- 1-3cm.