Instruction manual

Placement of Removable Sleeve Bulb Guard

The bulb guard can be removed for cleaning or general measurement.

Grasp bulb guard and gently pull. The bulb guard will slide off the

electrode exposing the pH sensing bulb and junction area.

See Figure 4A.

Press on the cap to open junction for easy cleaning.

To replace bulb guard, gently push into place. The bulb guard is

secure without additional turning or fittings. See Figure 4B.

For general measurements the bulb guard can be left in place on the

electrode. However, the bulb guard can contribute to carryover from

solution to solution . When using it, be sure to rinse thoroughly

between standards and samples to prevent carryover. For

measurement in viscous solutions or other solution which may be

retained in the protective guard area, remove the bulb guard for

measurement and calibration. Exposing the pH bulb completely

gives faster response and reduces carryover.

Sure-Flow

Junction

The Sure-Flow junction is operable with or without the bulb guard in

place. Simply press down on the cap to open junction and let fill

solution flow through, removing contamination. Removing the bulb

guard and flushing with distilled water aids in the removal of more

difficult deposits.

Figure 4A: Bulb Guard for 8165

Figure 4B: Bulb Guard for 8175

O-ring