Certified Reference Materials are used by analytical laboratories to calibrate analytical equipment and are available for purchase from the LBMA.

As part of our promotion of quality and good practice in the refining and trade of gold and silver, the LBMA produces and sells Gold and Silver Certified Reference Materials (CRMs). CRMs are available to any laboratories that wants to calibrate their analytical equipment using LBMA standards.

The world’s trade in bullion is London-based with a global reach of activity and participants. The roots of the London Bullion Market can be traced to the partnership between Moses Mocatta and the East India Company, who started shipping gold together towards the end of the 17th century.

There is currently only one gold CRM available. AuRM3 is intended to be used for the validation of instrumental methods for determining the concentration of trace metallic impurities in gold, such as X-ray fluorescence and optical emission spectrometry, using spark or inductively coupled plasma.

PLEASE NOTE:

All the silver reference materials have now been sold.

These were intended to be used for the validation of analytical methods for trace metallic impurities in silver, such as spark optical emission spectrometry. They could also be used in the calibration of analytical instruments. 

The gold reference materials 1 & 2 have also been sold.  

These were intended to be used for the validation of analytical methods for trace metallic impurities in gold, such as Spark optical emission spectrometry.

The development of new gold and silver certified reference materials is in progress.  Please continue to check here for further updates on when these will become available to purchase.


Ordering LBMA Certified Reference Materials

For more information or to enquire about purchasing reference materials please email us at gdl@lbma.org.uk. You can also download our order form or view a copy of the Au Certificate of Analysis.

Download: LBMA Certified Reference Materials Order Form - AuRM3

The cost for the gold CRMs is in two parts - firstly, a fixed cost and secondly, a variable element which includes the cost of shipment and, in the case of the gold CRMs, the value of the gold content (based on current gold price).


Format of the CRMs

AuRM3 is a disc of 30mm diameter and 5mm thickness with a weight of approximately 66.7g.

Download: LBMA Gold Reference Material Certificate of Analysis- AuRM3