Mettler Toledo InLab Versatile Pro Instrucciones De Manejo página 2

Instruction manual
Read this first
The METTLER TOLEDO InLab
The exact specifications of the pH and temperature range are printed on each individual electrode shaft or can be found under
www.mt.com/electrodes. These operating instructions cover the following electrode models:
51 343 031 InLab ® Versatile Pro
51 343 054 InLab ® Routine Pro
51 343 056 InLab ® Routine Pt1000
51 343 057 InLab ® Routine Pro-L
51 343 071 InLab ® Science Pro
Safety precautions
The electrode is to be used only for the purpose stated above. It is advisable to wear safety glasses when handling electrolytes and cleaning agents.
The electrodes contain glass parts.
Getting ready
The electrode is delivered ready for use. Please check visually for broken parts. For electrodes with detachable cable connect electrode head with
cable connector by twisting clockwise. For cables and electrodes with MultiPin™ connector both marks (white/gray) must be in line before
twisting. Connect other end with the pH meter. The cable for the temperature sensor must also be connected.
Next remove the wetting cap and rinse with distilled water. Eliminate any air bubbles inside the glass membrane space (internal reference elec-
trolyte) by smoothly shaking the unit in the vertical plane (as for a fever thermometer). The electrode is now ready for calibration. Please follow
the detailed calibration procedure, described in the manual of your pH meter. After calibration the electrode is ready for measurement.
Practical hint: After rinsing do not rub the glass membrane, since this can increase response time or damage the electrode.
Storage
Refilling
Trouble-shooting
Slow response/drlft
Slope not adjustable
Zero not adjustable
* Contamination by ...
Disposal
For further reading we recommend our booklet "Guide to pH Measurement" or
www.mt.com/pH or www.mt.com/electrode-guide.
®
pH combination electrodes are intended for accurate pH measurement in the laboratory at ambient pressure.
Rinse or clean electrode after use and replace the wetting cap, partly filled (1/3) with reference electrolyte.
Open the SafeLock™. Refill the electrode with the recommended reference electrolyte, if necessary.
The electrolyte level of a correctly filled electrode is approximately 10 mm below the filling hole.
– check all connections;
– temperature sensor must be connected to the corresponding pH meter input;
– for tips go to www.electrodes.net
– clean diaphragm*;
– after dry storage soak for 24 hours in reference electrolyte.
– clean diaphragm*;
– clean connector.
– clean diaphragm*;
– change reference electrolyte.
a) Proteins – Use cleaning solution Pepsin/HCI (Order No. 51 340 068);
b) Sulfides – Use cleaning solution Thiourea (Order No. 51 340 070);
c) Oily/organic liquids – Rinse with acetone or ethanol (flammable);
d) Acid/alkaline-soluble – Rinse with 0.1 mol/L HCI or 0.1 mol/L NaOH.
Each time the electrode is cleaned, it must then be recalibrated.
If no relative official regulations are in force, used or defective InLab
disposed of as ordinary household waste.
51 343 162 InLab ® Micro Pro
51 343 171 InLab ® Pure Pro
51 343 061 InLab ® Reach Pro
51 343 062 InLab ® Reach Pt1000
51 343 023 InLab ® Basics Pt1000
® sensors and the packaging can be