Tungsten Standards

All of our standards are prepared from real ores or blends of real ore with ore concentrates

StandardW  %Cu  %Mo  %Au g/tBi  %InventoryCertificate
CDN-W-22.780.45--0.3248 kgDownload
CDN-W-31.730.44---48 kgDownload
CDN-W-40.3660.1390.110.319 **-640 kgDownload
CDN-W-50.391----640 kgDownload

** Please Note:

CDN-W4: Au value is “provisional” only (RSD = 6.4%)

Standards with an RSD of near or less than 5 % are certified, RSD’s of between 5 % and 15 % are Provisional, and RSD’s over 15 % are Indicated. Provisional and Indicated values cannot be used to monitor accuracy with a high degree of certainty.