The LDFCAL is a specially prepared colloidal solution of suspended latex spheres undergoing Brownian motion. The LDFCAL provides a standard calibration value of 1000 BPU 5% @ 21C. Probes are calibrated to a specific LDF100C module by placing the probe in the LDFCAL solution and pressing the CAL button on the LDF100C front panel. A small clamp is provided with the LDFCAL to hold probes securely in the solution.
IMPORTANT- The LDFCAL solution has a 3-month shelf-life, so it's best to order it only when required.