Test set RealTest digital for 10 ppm User interface on display. 10 ppm in ambient air to excluded influences by humidity and low impurities. Pump for semi-automatic test gas mixture and test gas output by test adapter on the probe system. With a 1 liter test gas can (12 bar) about 100 tests can be reached. Delivery included: test set, test hose with test disc and operating instruction. Power supply, pressure reducer and test gas can 1000 ppm CH4 must be ordered separately.