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Each cartridge individually print tested at manufacturing stage.. For Canon Printers - BJ-10E, BJ-10EX, BJ-10SX, V20, V200, B200, B200S, BJ-200E, BJ-200EX, BJ-230, BJC-150, BJC-210, BJC-240, BJC-250, BJC-1000. Colour - Black. Yield - Up to 640 pages.