Ask X3What does 49 CFR 173.194 (Gas identification sets) require?
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According to 49 CFR 173.194, gas identification sets containing poisonous material must be packaged to meet Part 178 requirements at the Packing Group I performance level using one of the following methods:
Method 1: Standard Packaging
* Inner Receptacles: Hermetically sealed glass inner receptacles holding no more than 40 mL (1.4 fluid ounces) each.
* Secondary Packaging: Each glass receptacle must be placed inside a sealed fiberboard receptacle and cushioned with absorbent material.
* Intermediate Packaging: Up to 12 of these fiberboard receptacles must be placed inside a 4G fiberboard box.
* Outer Cylinder: No more than four of these boxes—well-cushioned—may be placed inside a steel cylinder. The cylinder must feature a wall thickness of at least 3.7 mm (0.146 inch) and a hermetically sealed steel closure.
Method 2: Material Absorbed in Medium (Option A)
* *Applies when* the poisonous material does not exceed 5 mL (0.2 fluid ounce) for a liquid or 5 g (0.2 ounce) for a solid, absorbed in a medium like activated charcoal or silica gel.
* Inner Receptacles: Packed in glass inner receptacles of no more than 120 mL (4.1 fluid ounces) each, cushioned with absorbent material.
* Secondary Packaging: Each glass receptacle must go into a hermetically sealed metal can with a wall thickness of at least 0.30 mm (0.012 inch).
* Outer Packaging: The metal cans must be surrounded on all sides by at least 25 mm (1 inch) of dry sawdust and packed into a 4A, 4B, or 4N metal box, or a 4C1, 4C2, 4D, or 4F wooden box.
* Quantity Limit: No more than 100 mL (3.4 fluid ounces) or 100 g (3.5 ounces) of poisonous materials may be packed in a single outer box.
Method 3: Material Absorbed in Medium (Option B)
* *Applies when* the poisonous material does not exceed 5 mL (0.2 fluid ounce) for a liquid or 20 g (0.7 ounce) for a solid, absorbed in a medium.
* Inner Receptacles: Hermetically sealed glass inner receptacles with screw-top closures of at least 60 mL (2 fluid ounces).
* Intermediate Packaging: Up to 12 bottles (totaling no more than 100 mL / 3.4 fluid ounces or 100 g / 3.5 ounces, or both) go into a plastic carrying case. Each glass receptacle must be surrounded by absorbent cushioning and separated from others by sponge rubber partitions.
* Outer Packaging: The plastic carrying case goes into a tightly fitting fiberboard box, which must then be placed inside a tightly fitting 4A, 4B, or 4N metal box, or a 4C1, 4C2, 4D, or 4F wooden box.