By-Products & Joint Products 7 / 10

By-products and joint products

Joint Products

Joint products are two or more products which are:

  • output from the same processing operation

  • indistinguishable from each other up to their point of separation

  • Joint products have a substantial sales value

  • Often they require further processing before they are ready for sale

  • Joint products arise, for example, in the oil refining industry where diesel fuel, petrol, paraffin and lubricants are all produced from the same process

By-Products

A by-product is a supplementary or secondary product (arising as the result of a process) whose value is small relative to that of the principal product. 

The distinguishing feature of a by-product is its relatively low sales value in comparison to the main product. 

In the timber industry, for example, by-products include sawdust, small offcuts and bark.

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