: In CBSA coding, this commonly refers to Online/On-Line , indicating that the records in question were expected to be accessible through electronic or web-based systems. Master Penalty Document
, meaning it acts like a sponge for atmospheric moisture. If left exposed to the air, it can absorb water, which can ruin its chemical reactivity and the quality of the final product. This is why it is typically shipped and stored under strict conditions to maintain its high purity. MPD-055 -28 -OL