Specification :

The 3340 and 3345 laboratory pH/ ion meters offer a host of valuable
features whilst retaining simplicity of operation through the use of
structured menus. Both models will store up to 100 readings all of which
can be recalled on the LCD screen or down loaded to a printer or PC.
Details of the last calibration results are time and date stamped, thus
satisfying the requirements of GLP quality assurance protocols.
The 3345 offers additional flexibility with two additional modes of ion
analysis: the known addition/ subtraction mode allows the determination of
ion concentrations much closer to the lower detection limits of the
electrodes, whilst multiple sample addition/ subtraction allows
measurements to be performed in dense and concentrated matrices.