Resistance Transfer Standards available in the following values 1 Ω, 10 Ω, 100 Ω, 1 kΩ, 10 kΩ, 100 kΩ Initial Accuracy... ± 20PPM of nominal value matched within 10PPM Transfer Accuracy... ± (1PPM + 0.1uΩ at parallel value) for 100:1 Transfer Accuracy... ± (1PPM + 1uΩ at series parallel value) for 10:1 Long Term Accuracy... ± 50PPM of nominal value Calibration Accuracy... ± 10PPM