pH calibration solution or calibration standard is needed to calibrate meters for extra precision.
This pH 4 calibration solution will last up to 300 calibrations of LAQUAtwin pH meter.
Great for calibrating other pH meters. Equivalent solution of HORIBA calibration solution Y014.
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.
⚫ Volume: 60 ml bottle with a twist top cap
⚫ pH buffer value: 4.01 (±0.02) at 25˚C⚫ Compatible with HORIBA LAQUAtwin pH meter PH-11 / PH-22 / pH-33 , Hanna Instruments models HI98107 / HI98128 / HI98103 / HI98118/ HI98100 / HI98121/ HI98108 / HI98127 / HI98129 / HI98131, Extech meter model Exstick H20, Oakton meters models pHTestr30, pHTestr50, EcoTestr2+
⚫Made in USA
