Using consumables list for ordering

Hi, I was after some suggestions on how to provide a service for ordering consumables held in a stockroom.

We are setting up a stockroom with lab consumables.  Various labs require access to see what stock is available and then wish to submit an order form to acquire the stock.

 We have proposed using dashboards and a service catalog item.  This does not seem to meet users requirements.

Would anyone have a similar situation who can suggest a different approach?

Much appreciated

Irene Best