Metcore, as an independent party providing testing and certification of metering systems.

Metcore has attained Authorised Verifier appointment by Enterprise Singapore, under the Weights & Measures Programme for MFM verification. The appointment further strengthen our already acquired services on: -


Lloyd’s Register exclusively recognized Metcore to provide mass flow metering engineering services and conformity assessment for bunker measurement application globally. Our overseas services has also been extended to include: -



Direct Mass Proving with 


With a highly competent team, Metcore leads the industry in successfully implement master meter proving of bunker tankers mass flow metering system measurement in actual bunker condition, while maintaining traceability to the SI units.

The aim is to achieve a high level of confidence and assurance towards the performance of current MFM bunkering systems.

​Master meter proving may constitute as an alternative to the current re-validation method, for the annual extension of the bunker tankers’ mass flow metering systems in Singapore.


It is more efficient in saving time and logistics by reducing measurements to less than a day from 3 or more days, without the need of a supporting tanker.

Delegates from Russia including representatives from PJSC Lukoil

Technical Committee for Bunkering & Working Group for Master Meter Verification


This guide serves as the reference document to assist the bunker tanker operators in Singapore in preparing their bunker tankers & MFM systems for meter verification tests for the FIRST TIME.


This Guideline serves as reference document to assist bunker tanker operators in Singapore in preparing their bunker tanker and MFM systems for meter verification.


Zero Verification

As recommended by American Petroleum Institute (API), periodic verification of the stored zero value is necessary to ensure that the former is within prescribed limits as defined by one or more of the following conditions: -

a. Manufacturer’s recommendation.

b. Performance testing and monitoring.

c. Custody transfer agreements.

Over time, the observed zero offset can be affected by flow sensor condition, pipeline stress, internal coating build up, etc.


Metcore as an independent company provides independent party field zero verification (ZV) of mass flow metering system.

Metcore is accredited by Lloyd’s Registered Marine (LR) to provide ZV for Mass Flow metering system onboard LR's bunker tankers.


MFM System Certification (Overseas)

Metcore International Pte Ltd is a leading marine solutions provider based in Singapore, providing independent certification, and trusted technical expertise in complete fuel measurement solutions for the bunkering industry.


​We specialize in integration, testing and operational readiness of Mass Flow Metering system on board bunker tankers.

Over the years, we have grown globally within Europe, Middle East and East Asia. In addition, we have expanded our services to cover meter verification, meter data analysis and oil loss management. Together, we have gathered vast experience and expertise from testing of more than 130 mass flow metering systems worldwide for custody transfer measurement. Our aim is to provide stakeholders a piece of mind in entrusting the use of meters for bunker operations.

Each mass flow metering system and its associated pipelines are secured to ensure the measurement integrity delivered to the receiving tanker is not compromised.

These mass flow metering systems are certified in consideration with guidelines specified in OIML R117 recommendation & SS 648

These MFM system onboard is then tested in bunker condition to ensure it meets the measurement uncertainty of 0.5% prior to certification.

The mass flow meter and system set-up is “NOT PLUG AND PLAY” type of equipment.

The main key focus of the certification is conformity to metrological traceability & measurement integrity.

Metcore advocates a holistic approach to seamlessly integrate fuel measurement systems onboard your vessels.​

We provide comprehensive  guidance throughout the entire process – from meter selection to achieving system certification.

First MFM System Certified

in Europe with TR48

On the international stage, Metcore International has been working with Lloyd’s Register (LR) Marine on numerous MFM systems test and certification projects for bunker application across a number of strategic ports globally.

Together with LR, we form an independent and value-added service in achieving certification for the mass flow metering systems. It has brought greater trust of the quantity measured to buyers of bunker fuels, thereby resulting in high efficiency of the bunker delivery operations.

6 Stages Guidance to Achieve MFM System Certification


Our Newly Developed

Master Meter Skid 

Working together with Endress+Hauser, we have developed the first Coriolis master meter system for bunker MFM testing in actual field condition by undergoing the highest level of calibration with hydrocarbon fuel, providing traceable and accurate measurement over a wide range of viscosity. The performance of the master meter has been reinforced by NMi Certin B.V. evaluation.





With Water




With Water & Oil

Evaluated and Declaration Issued by 

NMi Certin B.V.

Oil Product Viscosity Range

* Mouse-over to areas for more details

Flow Rate Range

( Qmin - Qmax )






Phone     (65) 6878 0870

Fax         (65) 6878 0872

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