Cal. Bus. & Prof. Code § 12500.6
Notwithstanding Section 12500.5, the secretary may prohibit the sale or installation of any previously approved type or design of weight or measure or weighing, measuring, or counting instrument if the secretary determines the weight, measure, or instrument does not fulfill the purpose for which it was approved or that the weight, measure, or instrument is not identical to the approved type or design.
The secretary may initiate proceedings pursuant to Chapter 5 (commencing with Section 11500) of Part 1 of Division 3 of Title 2 of the Government Code to determine whether the approval should be revoked or modified, and to determine the period of time that the owner or user of any accurate device for which type approval has been revoked or modified may continue to use that device for commercial purposes, pending the replacement or modification of the device.
Ca. Bus. and Prof'l. Code § 12500.6