We developing a chemical lab project. The main product is a chemical substance that we can sell. Those substances we packing into packagings like tubes, measures. We cannot put them into a delivery package, so we need to create some abstract as a `test-tube plate`. The main requirement is that the test-tube is like a table and we need to know exactly where the tube with a certain substance is located.

So, how I see it:

1) create a sale order

2) add to order multiple products in packagings (substances in tubes)

3) open custom application where I have an abstraction as a TestTube model. This model preserves the size of TestTube (10x10, for example) and sub-model like TestTubeCell with x and y coordinates. In this application, I have access to substances from sale order and I put every substance to the corresponding cell and have an ability to print this table (for checking reason). 

After that, I need to put this TestTube plate into delivery package to deliver to another lab.

Questions:

1) do I correctly understand and plan the flow and models to achieve the goal?

2) how can I put a TestTube plate to the delivery package?

Any help with this?