What is the difference between using an orifice to measure flow rate of liquids and using a Venturi tube to measure flow rate of gases? - Quora
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LZB-15(D) Flow Meter, Plastic Tube Flowmeter Liquid Flow Rate Gauge for Measuring Acid, Alkali, Various Mixed Neutral Liquids(40-400mL/H) : Amazon.co.uk: Business, Industry & Science
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