Mettler-Toledo Conductivity sensor without ISM®, LE703 User guide

Operating Instructions for
Probe LE703

This Conductivity Measuring Cell utilizes the 4­pole potentiometric method for measuring
conductivity, which incorporates a series of four
graphite poles embedded in the probe shaft.
This design completely eliminates the
polarization, which frequently occurs with the
2-plate amperometric method during measur­ing high conductivity solution.

Furthermore, combined temperature sensor
makes LE703 automatic temperature
compensating.

It is a general probe, good for lab use.

Order Number:
51340335

5. Allow sufficient time for the probe to stabi-

lize when measuring samples at different
temperatures.

6. The probe is not recommended for low

conductivity solutions. (

<10 S/

cm)

μ

7. Clean the probe with distilled water after

use.

8. For calibration and measurement proce-

dures, refer to the Instruction manual

supplied with conductivity meter.

Reagents and Supplies

1413 S/cm conductivity standard

μ

- 250 ml bottle, order No. 51300138

- Pack of 30 sachets, order No. 51302049

12.88 mS/cm conductivity standard

- 250 ml bottle, order No. 51300139

- Pack of 30 sachets, order No. 51302050

METTLER TOLEDO AG, Analytical
Sonnenbergstrasse 74

CH-8603 Schwerzenbach

Tel: [phone]

Fax: [phone]

http://www.mt.com

© Mettler-Toledo AG 2007

*12107277*

*12107277*

Operating Instructions

For optimum performance, use the following
operating procedures:

1. Remove all packaging material from probe

before use.

2. To prevent carry-over from solution to solu-

tion, rinse the probe with distilled water be-
tween measurements.

3. When measuring, make sure the solution is

above the cell chamber.

4. Ensure the cell chamber is free of bubbles

when measuring.

Precautions and Limitations

1. Do not expose the sensor to organic

solvents, either when cleaning or when

taking measurements.

2. Do not use the probe outside the recom-

mended temperature range.

3. Specification and performance of this probe

is guaranteed only when used with the ap-
propriate model of Mettler-Toledo conduc-

tivity meter.

Temperature Sensor

Cell Chamber