ซื้อdextrose 5 g + NSS 300 mg/100 mL solution for infusion, 500 mL bag(51999999-529116) dextrose 5 g + NSS 225 mg/100 mL solution for infusion, 500 mL bottle (51.99.99.99-817092) dextrose 5 g + NSS 180 mg/100 mL solution for infusion, 500 mL bag (51999999-528941) โดยวิธีเฉพาะเจาะจง