Manual

4. Press .

5. Take reading.

NOTE: When ppm free chlorine units are selected (ref. VIII. ORP UNIT

SELECTION), annunciators alert you when the concentration is outside

thespeciedmeasurementrange.“Or” (over range) will display when

the concentration is over the range limit (> 9.9 ppm). “Ur” (under range)

will display when the concentration is below the range limit (< 0.2 ppm).

WARNING: When using a D-6 to verify the complete removal of residual

oxidizing germicides, such as chlorine, ORP mV reading should be

as low as possible. Generally, an ORP reading of < 275 mV is a good

indicator that there is very little residual oxidizer remaining. However,

it is recommended that a target reading matching or close to the ORP

value measured at the output of your RO system be sought.

6. IMPORTANT:Afteruse,llpH/ORPsensorwellwithMyronLpH

Sensor Storage Solution and replace protective cap. If Myron L

pH Sensor Storage Solution is unavailable, you can use a strong

KCl solution (preferred), a saturated solution of NaCl table salt and

tap water (next best alternative), or a pH 4 buffer (least desirable

alternative). NEVER use distilled water or plain tap water as this

will quickly deplete the sensor (ref. Cleaning Sensors, 3. pH/ORP,

pg. 35).

Do not allow pH/ORP sensor to dry out.

VIII. ORP UNIT SELECTION (D-6) mV OR PPM FREE CHLORINE

1. Press .

2. Press and hold

for approximately 3 seconds.

The current preference for

ORP units of measure is

displayed. Factory setting for

this preference is mV (see

Figure 1).

4. Press the o r keys

to toggle between mV

and ppm free chlorine

measurement format. The

setting chosen is displayed.

(ppm shown as example in

Figure 2).

Figure 1

PPM

Figure 2