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Testing & Storing Nembutal Storage and Shelf Life of the Barbiturates
The soluble barbiturate salts (viz pentobarbital sodium) are very stable drugs. If stored correctly, they maintain their potency for decades. This is a particularly useful property of Nembutal, as it means the drug can be obtained and safely stored many years before any potential use. This is true of both powdered and liquid forms of the drug.
In powdered form, sodium pentobarbital should be kept tightly-sealed, away from any contamination or exposure to oxygen or atmospheric moisture. The product from China is usually supplied loosely packed in a small plastic sachet, so re- packaging is important. There are two recommended procedures for long term storage.
Method #1: Obtain a suitable glass container with a airtight screw top. The size should just accommodate the powder, with little extra space for air. If testing is planned, remove ~500mg, then tightly seal the container before wrapping it in aluminium foil (to protect from the light) and store it in a cool place. The refrigerator (~40