Test Techno Consultants manufacturers Mullen Type Bursting Strength Tester. Test Techno Consultants offers wide range of testing equipment for the paper, plastic and packaging industry. The Mullen Type Bursting Strength Tester is used to test the Burst Factor [B.F.] of paper up to 180 gsm, to test the Bursting strength of paperboard [200 to 600 gsm], and to test the bursting strength of corrugated boards.