Extech EC500 pH measurement equipment 0 - 14 pH EC500 사용자 설명서

EC500-EU V2.2   8/05 

2 

Congratulations on your purchase of the ExStik

®

 EC500 pH/Conductivity/Total Dissolved 

Solids (TDS) / Salinity meter. With the EC500’s dynamic cell-constant technology it is 
possible to measure a wide range of Conductivity, TDS, and Salinity with the same 
electrode. Careful use and maintenance will provide years of reliable service.  

 

The ExStik

® 

uses four (4) CR2032 Lithium Ion Batteries (included). If the batteries are 

weak, the ‘BAT’ indicator appears on the LCD. Press the ON/OFF key to turn the ExStik

 

on or off. The auto power off feature shuts the ExStik

 off automatically after 10 minutes of 

inactivity to preserve battery life.  

 

 

Getting Started 

 

•  Remove the cap from the bottom of the ExStik to expose the pH electrode, reference 

junction and conductivity electrodes. 

•  Before the first use or after storage, soak the electrode in tap water or pH 4 buffer 

solution for about 10 minutes. 

•  White KCL crystals may be present in the cap or on the electrode. This is to be 

expected depending on the length of time in storage. These crystals will dissolve 
while soaking the electrode or they can be rinsed away with tap water. 

•  For best results calibrate with pH 7 buffer solution first, then calibrate with the buffer 

solution closest to the expected pH value of the solution or material to be tested. 

•  To preserve the pH electrode life keep the sponge in the protective cap soaked with 

tap water or pH 4 buffer solution. 

•  For best results, calibrate for conductivity with a standard in the expected range of 

the sample. For maximum accuracy calibrate from low conductivity value standards 
to high value standards.