FTR, The technical term for the empty container weight is 'tare weight' (most
often seen in trucking logs I reckon).
I still haven't seen a published chart for liquor (anyone want to volunteer?)
. The only half-useful search results were all advertising beverage control
systems, which is fair enough.
[Dan the Melon Man] Re: LiquorBottleTareWeights
I suggest that if you don't know the tare weight yet, you can get equally
accurate results by reversing the math for a full, or even half-full bottle
and calculating the difference between beginning and end of a shift.
Beginning of shift, a part-full, 1 litre bottle weighs 670g
End of shift, the bottle has been replaced once, and the new (part-used)
bottle weighs 930g
We assume that 1 litre of liquor weighs 1000g (close enough)
Count the (content of the) newly opened bottle(s) as part of your start stock,
(+1000g) and we can say we :
- started with a weight of 1670g (1 bottle+?liquor)
- and ended with a weight of 930g (1 bottle+?liquor)
-> Hence we've dispensed 740g (est 740ml) of product
Divide that down into shots of whatever size yourself!
There is a bit of trickery going on here as I account for the weight of the
current bottle by pretending it doesn't exist :-B BUT I think the maths is
sound, and you can check the figures by making up any size bottle weight and
running the calculations again.
B(ottle) = ?
L(iquor) = ? (1:start 2:finish)
N(ew Bottle volume) = 1000
B+L1+N = 1670
B+L2+N = 930
B+L1+N - B+L2+N = 1670 - 930 = 740
= L1 - L2 = 740
Note, we still don't know exactly how much stock you have on hand! Only how
much stock has been used between these to points in time.
.dan.