eutech-instruments waterproof c401 colorimeter Manuel D’Utilisation

Measurement: Chlorine, Free & Total

 

 

C401/301/201/102/101 

 

 

 

10

7.  Remove the vial from the meter and add into it the content of one 

DPD Free sachet (for Free Chlorine determination) or the content of 
one DPD Total sachet (for Total Chlorine determination).   

8.  Replace the cap, ensuring it is screwed on finger tight to the vial.  

Invert the vial repeatedly for approximately 20 seconds, until the 
powder has dissolved.  

Add content of one DPD Free sachet  
(for Free Chlorine determination) or  

one DPD Total sachet (for Total 
Chlorine determination).  

Invert vial approximately 

20 seconds until powder 
dissolves  

 

9.  Gently push the vial back fully into the sample well of the meter, 

whilst again aligning the ▼ mark on the vial with the ▲ mark on the 
meter. 

10.  For Free Chlorine determination, press the READ/ENTER key within 

two minutes from the time the DPD Free reagent was added to the 
vial. 

11.  For Total Chlorine determination, wait for two minutes and then press 

the READ/ENTER key within four minutes from the time the DPD 
Total reagent was added to the vial. 

12.  The meter will flash either [CL-F] or [CL-T], depending on which test 

is being performed, whilst the measurement is taken. It will then 
display the Chlorine concentration in parts per million (ppm) Cl

2

.  

READ

ENTER

ppm