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IET is the World's Leading Resistance Calibration Standard Manufacturer With 50+ years of stability data and history, IET Labs manufactures a full line of resistance standards that will cover most any budget and application.
From the world's most stable to our cost-effective models From 1 mΩ to 10 TΩ Contact us if you don’t find the resistance standard you need and we would be happy to custom build it for you.
IET Labs, maintains some of the finest R, L and C calibration standards in the World. Almost all of IET’s resistance standards are manufactured with pride in the USA.
SR102/103/104 Series Highest accuracy (1 ppm/yr) and stability (±0.5 ppm/yr typical) of any resistance standard Lowest temperature coefficients (< 0.1 ppm/ºC) Available in 3 models: 100Ω, 1000 Ω, 10,000Ω. Has remained the foremost resistance standard, with no equivalent, for over 35 years 5 Year Warranty Included DCCS DC Current Shunt Series Allows for high current calibration, up to 60 A Resistances ranges from 100 µΩ - 1 kΩ High accuracy 0.02% Suitable for direct current & audio frequencies Oil-filled design ensures great long term stability <0.01% over many years VRS-100 Series High Resistance Standards Set of nine, ten or eleven resistors - 1 kΩ, 10 kΩ, 100 kΩ,1 MΩ, 10 MΩ, 100 MΩ, 1 GΩ, 10 GΩ, 100 GΩ, 1 TΩ and 10 TΩ , open circuit (Depending on model) High Accuracy - up to 20 ppm Standard voltage: up to 5 kV (voltages of 10 kV are available) Excellent for calibration of Meggers For higher resistance values above 10 TΩ see SRC-T Network Standards SRAC Standard Resistors Designed for Use At AC Precision ac/dc resistance standards designed for use up to 10 kHz Available for values from 1 mΩ - 10 MΩ, Contact IET for custom values Very stable <20 ppm/year for most values at ac and dc Calibrated at dc and 1 kHz esi SR1010 Resistance Transfer Standard 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 esi SR1030 Series Oil Immersed Transfer Standard Resistance Values of 1 Ω - 100 kΩ Initial Accuracy... ± 20 PPM of nominal value matched within 10 PPM Transfer Accuracy... ± (1 PPM + 0.1uΩ at parallel value) for 100:1 Long Term Accuracy... ± 50 PPM of nominal value Calibration Accuracy... ± 10 PPM esi SR1 Calibration Resistor New Design, with improved specifications Versatile working calibration resistor Laboratory standard of high accuracy and stability Adjusted to within 20 ppm of nominal 50 ppm long-term accuracy for most values LOM-530 Micro-Ohmmeter Calibration Kit Complete set of (5) working standard resistors for calibration of micro-ohmmeters. Resistance values can be custom modified per your requirement. Calibrates a wide verity of micro-ohmmeters from various manufacturers SRX-NI-4082 Standard Resistor Calibration Set Owned used and recommend by National Instruments Very stable - drift < 50 ppm/yr Excellent temperature coefficient - 2 ppm/°C Rugged Set consists of 4 resistance standards: 25 Ω, 125 Ω, 5 kΩ, 100 kΩ values as recommended by NI PXIe-408x calibration procedure 3/4" spacing for direct connection to the NI PXIe-4082 Low inductance < 0.08 µH Accredited Calibration In addition to the standard values, any custom value is available. Please contact the IET sales department, for more information SRC-100T-TN Resistance Standard High resistance standard based upon a T network design 3 lower value resistors simplifies calibration Wide range of values - 10 TΩ to 100 TΩ Very stable - 500 ppm/yr ISO-17025 accredited calibration included 3 Year warranty included Excellent TC - 25 ppm/°C