UJI 13-1422. Changed or altered product.

In order for a supplier [a particular supplier who was in the chain of marketing the product] to be liable, the injury must have been caused by a condition of the product which was not substantially changed from the condition in which the [particular] supplier placed the product on the market or in which the supplier could have reasonably expected it to be used. For substantial change in the product to relieve a supplier of liability, the change itself must be a cause of the harm done.