What type of primary container is required for shipping soil?

• A. air-tight metal container
• B. securely closed, water tight primary container
• C. sealed plastic bag
• D. unsealed wooden box

Answer: (B)

This item tests that the innermost container holding the soil during shipping must be leak-proof and securely closed. Soil can be moist and contain particulates, so the container has to be water-tight to prevent any leakage to the outer packaging, other cargo, or handlers. A securely closed, water-tight primary container provides containment, protects the shipment from moisture or soil loss, and minimizes exposure to people and the environment. An airtight metal container isn’t required and can be impractical due to corrosion risks or pressure changes; a sealed plastic bag can easily tear or leak under movement; an unsealed wooden box offers no leak protection and would fail to keep contents contained. So the secure, water-tight option best meets the safety and containment needs for shipping soil.