> Model no. 1771 The IPT combi-tester is the multi-purpose test rig for waste water pipes. With just a basic unit, the leak-tightness test on pipes with diameters up to 400 mm at inner pressures from 0.5 bar down to vacuum (optional) can be performed. With further modules such as the shear load unit, or manhole test bench, deflection or squeezing unit, a whole variety of tests can be performed on one test rig. On the front panel of the switch cabinet, the rational disposition of all control, indication and connection components gives you easy overview and comfortable access. Combi-tester for corrugated pipes in accordance with EN 1277: : As a result of the increased requirements for this type of test, IPT has developed the combi-tester to enable pipes with larger diameters to be tested. The newly-developed test chamber allows leak tests to be carried out on pipes of up to 1200 mm. The modified supply unit provides the supply pressures required.