E H total nitrogen ZA80TN is not smooth in extracting one of the reagents, and the system alarms, but there is no problem with other water samples and reagents.
After the on-site investigation by Ayi's scientific and technological engineers, the on-site pipelines were normal and the solenoid valve was working normally. Later, the liquid collecting distributor was disassembled and found that the corresponding pipe port was blocked, cleaned and worked normally!
Ayi Technology, your E H meter expert!