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Fig 15.1: 2 x 12.5gm screw top containers of Chinese powdered sodium pentobarbitol
In contrast, the veterinary liquid form of the drug is designed for intravenous administration in animals to provide anaesthesia for surgery. It is marketed as a sterile clear liquid with a concentration of 60 mg/ml of sodium pentobarbital in alkaline buffered solution with 10% ethyl (or methyl) alcohol and ethylene glycol. The usual packaging is a glass 100ml bottle (clear or tinted glass), sealed with a rubber stopper and metal seal.
Pharmaceutical-grade Nembutal tablets or capsules are normally supplied in a screw top plastic container, showing a date of manufacture of more than 20 years ago, usually long past their expiry date.