FGI Apogee Instruments Sun Calibration Quantum Sensor, 5 m Cable Length with Connector

* Accurate, Stable Measurements Cost-effective, original quantum sensors work well for broadband radiation sources (sun, high-pressure sodium, metal halide, cool white fluorescent lamps), * Made in the USA in Logan Utah * Calibration Traceability Apogee SQ series quantum sensors are calibrated through side-by-side comparison to the mean of four transfer standard sensors under a reference lamp. The reference sensors are recalibrated with a quartz halogen lamp traceable to the National Institute of Standards and Technology (NIST).