Copper CRM is available now. USL Sp. z o.o. has expanded the offer with a new copper standard AR146.
This copper CRM (Certified Reference Material) is available in 1 g pins and has the following parameters:
AR146 Cu standard | |
% Oxygen | % Sulfur |
Mean = 0.0238 | Mean = 0.0013 |
Std. dev. = ± 0.0003 | Std. dev. = ± 0.0002 |
Other copper standards produced according ISO 17034 and ISO 17025 are also available: