To arrange equipment repair services, contact Sandhill Scientific technical suppport at 800.468.4556 and ask for technical support Our equally innovative High Resolution Impedance Manometry system provided the world with the first high resolution manometry system capable of concurrently assessing bolus transit with impedance We pioneered Impedance/pH Total Reflux Monitoring for acid and nonacid reflux, forever changing worldwide diagnostic practice for refractory GERD