The macro bin. These heavyweight plastic bins that have become the go-to container for transporting grapes at harvest time. (and for many winery sites using them as fementation vessels too!)
Here in California from a weighing standpoint they are in the group of vessels referred to as a common tare type.
This means that any site holding a Weighmaster License that uses these macro bins to weigh their grapes is required to establish a common tare weight for them each year, which is used when completing a weighmaster certificate (weigh tag).
The details about common tares for macro bins are the topic of my next winery harvest compliance FAQ video. Here's a link to view it: