WATERGLASS CELL USED FOR THE INSPECTION OF CONTACT LENSES. THE CELL MEASURES APPROXIMATELY 2" WIDE X 2" LENGTH X 1/2" IN HEIGHT. IT IS USED TO HOUSE A SMALL VOLUME OF BORATE ON THE DIALPACK MACHINE. THE OPERATOR INSERTS LENS INTO THE BORATE IN THE WATERCELL. THE CELL HAS A GLASS BOTTOM, WHICH IS POSITIONED ABOVE THE COMPARATOR LENS, THROUGH WHICH THE OPERATOR CAN NOW INSPECT THE LENS. THE SIDES OF THE WATERCELL ARE REINFORCED WITH ANODISED ALUMINIUM. (OF OTHER GLASS HAVING A LINEAR COEFFICIENT OF EXPANSION NOT EXCEEDING 5 X 10¯/6 PER KELVIN WITHIN A TEMPERATURE RANGE OF 0°C TO 300°C)

CLASSIFICATION IS DETERMINED BY GENERAL INTERPRETATIVE RULES 1 AND 6 THE TEXT OF CODES 7017, 7017 20 THE HARMONISED SYSTEM EXPLANATORY NOTES TO HEADING 7017