A coriolis mass flow pick-up is disclosed, which can be inserted into a pipeline and has a fluid to be measured flowing through it during operation. The bottle has an integral dip tube formed therein connecting at a landing below the top of the bottle neck, fluidly connecting the inside of the bottle with the top opening of the bottle. The two transistors form a pair in which one transistor has a wide variability in threshold voltage and the other transistor has a narrow variability in threshold voltage.