"stir gently and wait for a steady reading".

The reason to stir is to remove whatever the old solution on the bulb wasâ?¦.and replace it with the new solution. Youâ??ll never let the meter â??settle inâ?ť while stirring. Stir a while (15-20 sec) stop stirringâ?¦..let the meter settle inâ?¦.and viola your true Ph.

Thanks for all your contributions in the past.
Horsemanrocks.