Screen printing - double entry for ink costs

[LRC]

Hi,

I was wondering if anyone could explain what the double entry (bookkeeping) for ink costs would be a print order.

I assume it would be to credit my inventory account for the cost of the ink and debit my sales account, but it not all that easy to figure out the ink cost and amount.

If I don't know how much ink I was using then my inventory amount (in £) might not be a true representation of the amount I have in inventory. I suppose this is also a question about how I might accuarately monitor my ink in terms of keeping an accurate inventory.

Hope you guys can help.

Thanks.