Companies can sign up for the service while at the event.
Once a date is arranged, a GMG colour technician will travel to the firm's premises and administer a free health check on its colour printing services.
The technician will check if proofing conditions meet the relevant Fogra proofing standards and whether its press is printing to optimum standards.
The health check will take around four hours and the specialist will make recommendations for improvements, if required.
GMG provides colour management software from pre-press to print production.
Northern Lights will be held in The Lowry in Manchester’s Salford Quays.
Other Duplo partners taking part include Balreed, Infigo Software, Lumejet, Paperlinx, Renz, Vivid and Tharnstern.
Find out more about the event here.