The deal will cover sales to specialist retailers and “tactical sales management” in the grocery sector.
PLB will represent a number of brands including Ossian, Lia Fail, Thrappledouser, Blackfriar and Santa’s Swallie.
Inveralmond comercial director Bob Hogg said: “PLB’s knowledge and understanding of the specialist sector’s needs make them the perfect partner for our business.
“Our customers can be assured of an enhanced level of service and a range of new promotional activity which will ensure their craft beer offer maximises its potential.”
Martin Howe, head of PLB's beer division, said: “The Inveralmond Brewery portfolio adds depth to our beer offer.
“We were impressed by the plans Inveralmond have for new bottled products.”