Profile: Redwood Instrument Co. specializes in leak detection equipment based on direct measurement of leak flow rate. Our product Rico™ precision leak detector measures the actual flow rate of gas escaping from a leak. It uses a differential mass flow measuring principle to overcome problems of material creep in soft plastic products and thermodynamic drift. Our precision leak detector is used to test blood bags, industrial valves, gas regulators, catheters, intravenous pumps, die castings and blood warming sets.