Dear community

In Odoo Community Edition V10.0, I would like to have separate LOT counters for the products I buy and the ones I produce. As far as I understand, if I activate LOT and serial numbers, there is only one counter which generates numbers in the format from 0000001 upwards. Is there a way to configure multiple counters for different products, categories or routes to separate them, maybe also with unique prefixes? Mainly, I would like to achieve, that I have LOT numbers of the products I produce from 1 upwords, so I have an overview how many LOTs I produced over time. 

What I tried so far is to generate a list of unique numbers for a particular product. However, if I manufacture this product and allocate the LOT number, I have all numbers available, can add the product to an existing number already used and generally don't know which number is next in line. 

Thank you for your help!

Regards,

Andreas