... "disposable anaesthetic puncture bag"Biological properties:Biocompatibility GB/T 16886.1 requirements, non-toxic, no heat, no hemolysis, no stimulation ... 2.PH: inspection and blank liquid PH value of no more than 1.5.3.heavy metals, inspection of barium, chromium, copper, ... lead and tin content of total does not exceed 1ug/ml.Min order:500pieces one-time use liquid medicine ...