Weight of Bottle of Resin

I’d love to be able to weigh a bottle of resin to know how much is left inside it more precisely.  Does anyone know the weight of a full bottle and the weight of an empty bottle?

For our current bottle designs:
Empty bottle = 120g
Full bottle = 1200g

Oh excellent, didn’t even think about this. Time to dust off the scale…

My UPS resin package came labeled at 4lbs.