High-Purity Copper Wire Testing

Project Description

Laboratory needed for copper wire testing of high-purity wire copper (32 cm length and 8 mm diameter) so we need to analyze the Residual Resistivity Ratio (RRR). We have references that RRR is the ratio of the resistivity at room temperature like 298 K to the residual resistivity at 4.2 K.
Please send me info about it and a quotation if it is possible