Spherical
Glass Tip
The
spherical shaped tip design allows for a wide area of contact with
the measured sample. This permits a faster electrode response with
a higher degree of stability. The glass sensing tip on the HI10430
uses Hanna’s high temperature (HT) glass formulation that has a
resistance of approximately 400 megaohms. The high impedance makes
the HI10430 ideal for aggressive chemical applications and high
temperature applications. Conventional glass formulations suffer
from a greatly reduced lifespans at high temperatures relative to
high temperature glass.
Triple
Ceramic Junction
The
triple ceramic junction allows a higher flow rate of electrolyte
from the reference cell into the solution. A standard pH electrode
will use a single ceramic junction that allows for 15 to 20
µL/hour of electrolyte to flow; the HI10430 has three ceramic
junctions, providing for 40 to 50 µL/hour of electrolyte to flow.
This high flow rate provides faster electrode response and a more
stable measurement in viscous solutions or samples of low
conductivity.
Double
Junction Reference
A
double junction electrode has an internal compartment surrounding
the reference wire. Silver ions are present in the electrolyte of
the internal compartment, which houses the Ag/AgCl reference wire;
the electrolyte outside this compartment is silver free. The
double junction design means that virtually no silver from the
electrode enters the sample. This design allows measurement in
applications where silver ions in the sample are undesirable or
silver precipitates on the junction are likely to form.
Glass
Electrode Body
The
glass electrode body is suitable for a wide range of applications
due to its chemical resistance. The glass electrode is compatible
with many non-aqueous solvents and other aggressive chemicals.
Glass is also resistant to many forms of radiation, such as
ultraviolet radiation.
