A WATER FILTRATION SYSTEM WHICH REMOVES OR DEACTIVATES HARMFUL SUBSTANCES FROM ANY NON-SALT WATER SOURCE. TO USE FILL ONE BRICK CONTAINER WITH CONTAMINATED WATER, DROP FILTER INTO THE CONTAINER, PRESSURISE WITH THE BULB PUMP AND POUR CLEAN WATER THROUGH A SMALL HOSE WITH TAP INTO THE SECOND BRICK CONTAINER.

GENERAL RULES 1 AND 6 FOR THE INTERPRETATION OF THE COMBINED NOMENCLATURE. THE TEXT TO TARIC CODES 8421, 8421 21, 8421 21 00 AND 8421 21 00 90. THE HARMONISED SYSTEM EXPLANATORY NOTES TO HEADING 8421.