Dilution and drip chamber for the preparation and administration of injectable solutions for use with a plastic bag (31) with open-and-close valve (33), infusion equipment (32) and syringe (28) with male luer-lock terminal (8)； the chamber (30) comprises semi-rigid and transparent plastic tube sector (12), closed by top (16) and bottom (17) covers； on the wall surface (18) of the cover (16) there is an air filter (19) and tubular extension (35) with terminal (8) and cover (34)； the tube sector (12) has volumetric scale (14)； the bottom cover (17) have tubular extension (37) starting from the base wall (25) in which a conical base (46) of the valve (33) and female luer-lock terminal (45) is inserted； in the upper portion (42) of the outer body (41) of the cover (34) there are radial ribs (43)； from the center of the cover (34) a hollow plastic tube (44) goes beyond the base of the cover (34), ending as terminal (45).
