Calcium calibration solution or calibration standard set is needed to calibrate meters for extra precision.
This calcium solution set is ideal for calibrating LAQUAtwin calcium meter in two points (150 and 2000 ppm) before measurement. 
This set was designed for intensive testing and will last for 300 calibrations (for each concentration) of LAQUAtwin meters.
We recommend calibrating your LAQUAtwin meters daily (if you measure daily) or after every 10 measurements within a single day if you are testing more intensively.
 
⚫ Set of calcium solutions (150 and 2000 ppm) for LAQUAtwin meter calibration
⚫ Volume: 60 ml bottle x 2 
⚫ Compatible with HORIBA LAQUAtwin Ca-11 and B-751
⚫ Equivalent solution of HORIBA calibration solutions Y051H & Y051L
⚫ Made in USA