Profile: Instrulab, Inc. is a manufacturer of measuring instruments. We are an ISO/IEC 17025 certified company. Our product line includes hand held RTD, multichannel RTD, dry block calibrators and sensors. Our Instrulab 310 hand-held model employs a stable, large, backlit LCD display with contrast adjustment. This features accurate field temperature measurement in almost any environment. The display is timed to prevent unnecessary battery drain. Its ability to store calculated data sets, along with other necessary parameters, means no copying, interpolation or logging errors. Our YSI series 400 thermistor sensors are used with any instrument that uses YSI series 400 sensors. They can be calibrated for standard, spot or custom calibration depending on the accuracy and temperature range of interest. These are equipped with probes, vinyl covered shielded wires and can provide any standard YSI 400 series thermistor, 2252 ohms at 25°C.