Hach 50 10 Manual De Usuario página 11

Life of an electrode
The average life expectancy of a pH electrode is approximately
one year depending on the working conditions.
An electrode used for more than six months that does not re-
sponse appropriately after regeneration, must be replaced by a
new one.
If an electrode has too short life span, less than three months,
ask us about it. Probably there is a more suitable electrode for
the application.
Specifications
pH measuring range
Operating temp.
Reference element
Diaphragms
Electrolyte
Body material
Min. immersion depth
Applications
Aqueous samples in general.
Limitations
Low conductivity, dirty or viscous solutions.
Products with colloids or solids in suspension.
Samples containing sulphides, reducing sugars or other sub-
stances which react with the silver ion.
Temperatures exceeding 80 ºC.
Warranty
HACH guarantees this electrode against manufacturing defects.
Validity: 6 months from shipment date.
Limitations:
• Accidental damage.
• Inadequate applications.
• Non-fulfilment of the recommendations.
• Normal wear and tear of the electrode.
QUALITY CERTIFICATE
The attached electrode 50 10 has passed the quality test and
follows the next specifications:
• Asymmetry potential < ± 15 mV.
• Sensitivity, pH 4...7 (at 25 ˚C) > 98%.
• Response time, pH 4...7 < 20 s.
0 ... 80 °C
Ag wire coated with AgCl
external: polycarbonate, internal: glass
12 mm
0 ... 14
ceramic
gel
11