This 12.88 mS/cm conductivity calibration solution will last up to 300 calibrations of LAQUAtwin meters.  Equivalent solution of HORIBA calibration solution Y071H. 
 
⚫ Volume: 60 ml bottle with a twist top cap
⚫ Conductivity standard value: 12.88 mS/cm (12,880 µS/cm)
⚫ Made in USA
 
Compatible with HORIBA LAQUAtwin models EC-11 / EC-22 / EC-33, Hanna Instruments models HI98301, HI98303, HI98304, HI98311, HI98312, HI98318, HI98331, Extech meter model EC400, Oakton meters models Ecotestr CTS / CTS Testr 50 / EcoTestr Conductivity