The HI-93124-2 EBC Haze Meter 2.5 EBC Calibration Standard provides a simple solution to calibrating and validating the HI-93124 turbidity meter that has a 0 to 10.00 and 10 to 250 EBC range. Hanna’s turbidity calibration standards are prepared from NIST traceable primary standard reference materials and come supplied with a certificate of analysis. The certificate of analysis provides the lot number, reference values, and expiry date for traceability when certifying the appropriate turbidity meter.