I would say a "unit" is the unit quantity your customer uses that item. If they use it in 50 pound bags, versus a 1 pound bag, those are still one unit each. If you have products that go to distributors and then go onto retail used by retail consumers then it is the unit the retail consumer uses or purchases.
What if the bulk items you supply is used as ingredients for retail products but the customer won't disclose how many unit of retails products produced?
If I produced 150 drums (200 kg) on a daily basis, 25 days a month, that would be 45,000 drums in a year.
if I convert this to liters = 9 million liters/year
Since this is a bulk packaging, using liters as unit is quite difficult.
So, should I use per drum basis as a unit in my complaint?
Any suggestions how many ppm should I set based on above calculations?
Thank you.