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.

Common tare compliance for deputy weighmasters​​​

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