Warranty

FL700-en-GB_V1.6 12/16

Calibration Frequency

Calibrate the FL700 prior to each new measurement batch or if more than 12 hours has elapsed

since the last calibration.

Other Standards

The FL700 can also be calibrated between 0.5 and 5.0 ppm F. Follow the calibration instructions

above but substitute 0.5 ppm for 1.0 ppm and 5.0 ppm for 10 ppm.

Slope Adjustment

1. Slope adjustment although not a frequent requirement can be carried out by following the

instructions in Calibration steps above except for the fact that a 10 ppm standard is used after

calibrating with the 1 ppm standard

2. Press the Cal button until 10 ppm appears. Slope adjustment is then complete.

Measurement Mode

1. Prepare 20ml of test solution by adding one TISAB reagent to the unknown sample.

Thoroughly wipe the end of the FL700. Wait for the tablet to dissolve and then mix thoroughly

before proceeding.

2. Rinse the end of the FL700 in your rinse solution or in distilled water, wipe dry.

3. Place the FL700 into the prepared unknown sample. If the instrument is in the HOLD mode,

press MODE/HOLD to unlock HOLD

4. After ~35 seconds, the instrument will display the value of the unknown concentration and will

then enter the HOLD mode

Note: The readings can be stored in the memory by pressing the MODE/HOLD key for ~ 3 seconds.

Reset Calibration Data

Follow this procedure to clear all calibration data from the meter. Resetting the calibration data may

be necessary when new calibration solutions are used or accuracy of measurements is in question.

1. Turn off the meter.

2. Press and Hold the Cal/Recall and Mode/Hold buttons.

3. Momentarily press the On/Off button, as soon as the display comes on, release all 3

buttons.

4. The display will show “dFLt rSt” (default reset) and all of the calibration data will be erased.

If “dFLt rSt” does not appear, retry the procedure.

Proceed to the calibration routine for pH and Conductivity.

Electrode Storage

1. It is recommended that the electrode be stored WET in the last test solution used by the

instrument (fluoride ion plus TISAB reagent).

2. The module and can be stored dry. If stored dry it will be necessary to allow approximately 15

minutes of soaking in a fluoride solution before the specified performance can be achieved.

The instrument will give an error code when the electrode can no longer be calibrated.