Comes as a set of 6 with caps. Specifications Footnote: 1 pair of cells is included with purchase of most Pocket Colorimeter II instruments. See Quick Reference Guide for details Material: Glass Optical Path Length: 1 inch round Quantity: 6 pcs 10 mL, with caps PENTING!!! STOK TIDAK MENGIKAT, HARAP MENANYAKAN STOK TERLEBIH DAHULU..