Glad to see you in the Community, thanhphuongy.
The Inventory feature in QuickBooks can help track items on hand, get alerts when it’s time to add stocks, and provides insights on what you buy and sell. Based on the scenario, the best way to keep track of the concentrated and diluted products is to use a third-party application. This is because you’ll have to use a unit of measure to quantify the percent level added to the diluted product.
We know each business has different needs, so I’m unable to recommend which app to use. The App Center has all kinds of third-party applications to choose from. You can check the customers' reviews to help decide which one suits your needs most.
For more insights on how QuickBooks handles your inventory as well as instructions to set up items, check out the following articles:
Stay in touch if you have any other concerns or need assistance in managing inventory. I’ll be right here ready to help. Have a great rest of the day.
