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| Flow Meter Type | Gas Standards | Liquid Standards |
| Ultrasonic | AGA9, BS7965, ISO TC30/SC5W91 | API MPMS Chapter 4.6 & 4.7 |
| Orifice DP | ISO 5167, AGA 3, AGA 5, ISO 6976 | BS 5844 |
| Turbine | API Chapter 14, ISO 9951 | API Chapters 5,6,11,12,13,14 |
| Coriolis | AGA Draft - 11 ISO 10790 | API Chapter 5 & 6, API MPMS 20.1, OIM CC R105 |
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