Conditioning of samples Inflate the balls acc. to the in 2.1 mentioned pressure values +0.1 bar! Samples must be conditioned before testing for 24 hours under the conditions mentioned under 1. in order to make sure the Finish Ball Tests are started from comparable room temperature conditions. To adjust the ball pressure as prescribed in the adidas Specification for inflatable balls (see 2.1), a calibrated pressure gauge (figure 1) is required!