Proper usage and maintenance of the LAQUAtwin Ion meter, especially the ion sensor that comes in contact with samples, is important to maintain the accuracy and prolong the life span of the instrument.
A dry ion sensor may give erratic reading or slow response. Condition the ion sensor before using it for the first time and after storing it dry. If there is white powder or salt buildup on the junction after dry storage, simply rinse off with water. This is normal.
The performance of the ion sensor may deteriorate, especially when it is used in testing dirty samples such as soil, plant tissue sap, etc. To restore the performance of the ion sensor, remove any unwanted sample residues on the flat sensor surface by cleaning it with soap solution (water with 5% detergent). If there are stains or stubborn deposits left, perform the following:
Sodium hypochlorite (NaClO) salt is the active ingredient of bleach, which is often used in disinfection and stain removal. For cleaning the sensor, a cleaning solution with NaClO is recommended, so dilute bleach if necessary. Never use any organic solvent (e.g., acetone, ethanol, etc.,) to clean the sensor as it may cause damage and shorten the sensor lifespan. This usage will also void the sensor warranty.
If disinfection is needed, wipe the surface of meter body and sensor with a clean cloth wet with ethanol or use alcohol wipes. For the flat sensor, rinse it thoroughly with sterile water after cleaning with bleach.
If calibration with fresh ion standard solutions failed repeatedly and cleaning did not restore the ion sensor performance, replace the sensor with a new one (See Part Numbers below). The ion sensor is a consumable product and its performance deteriorates over time even under normal operating condition.
Store the clean ion sensor dry. Make sure to condition the sensor prior to next use (See Conditioning).
Do you have any questions or requests? Use this form to contact our specialists.
HORIBA Advanced Techno, Co., Ltd.
31, Miyanonishi-cho, Kisshoin
Minami-ku Kyoto 601-8306 Japan
Tel: +(81) 75 321 7184
Fax: +(81) 75 321 7291
HORIBA Instruments (Singapore) Pte Ltd.
83 Science Park Drive, #02-02A,
The Curie 118258 Singapore
Tel: +65 6 908 9660
Fax: +65 6 745 8155
HORIBA UK Limited Northampton Office
Kyoto Close,Summerhouse Road,
Northampton NN3 6FL UK
Tel: +(44) 1604 542 600
Fax: +(44) 1604 542 699
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