Apera Instruments LabSen 821 User Manual

LabSen electrochemical sensors are premium pH
and key components imported from Switzerland. LabSen 821 food pH electrode is ideal for
protein-containing dairy products, beverages, and liquid food.
This probe has following features:
l Impact-resistant membrane (see the right picture)，there is no danger of
electrode breakage during normal use.
l Protelyte reference solution does not react with protein; 3 ceramic pores
reduce the possibility that the junction could be blocked.
l Blue gel inner solution, does not flow and will not cause a bubble.
l Long life reference system, and silver ion trap reference prevent the
contamination of the junction when testing samples containing sulfides and
proteins, which helps to improve the stability and service life of the electrode.

1. Technical Data

Measuring Range
Temperature Range
Shaft Material
Membrane Shape
Reference
Junction

2. Usage and Maintenance

2.1 Prior to measurement, remove the rubber plug to maintain pressure of the reference solution,
keep consistent flow rate of reference solution and stable potentials of junction.
2.2 After a period of usage, the reference solution will run low. Whenever the level falls to 1/2
height of the electrode, add 3M KCL solution to the refilling hole by using syringe or pipette.
2.3 The connector of the electrode should keep clean and dry. If contaminated, please clean it
with medical cotton and absolute alcohol and blow dry to prevent the short circuit of the
electrode and slow reaction of electrode.
2.4 The electrode's measuring tip should be soaked in the soaking bottle containing storage
solution to keep the membrane hydrated and junction unblocked. When measuring, please
unscrew the bottle cap, pull out the electrode and rinse it with deionized water. After using,
please put the electrode back into the bottle and screw tight the cap. Clean the bottle and
replace the storage solution if the storage solution gets turbid and mildewed. The electrode
should never be soaked in purified water or buffer solution for long.
2.5 After 1-year of use, we recommend replacing the electrode for best accuracy.
APERA INSTRUMENTS, LLC
Address: 6656 Busch Blvd, Columbus, OH 43229
Website:
www.aperainst.com
LabSen 821 Food pH Electrode
User Manual
（0-14）pH
（-5~100）℃
Lead-free Glass
Half Ball
Silver Ion Trap
Ceramic x 3
electrodes with manufacturing technology
Electrolyte
Soaking Solution
Electrode Dimension
Connector
Cable
Phone: 1-614-285-3080
Email: info@aperainst.com
Protelyte
Protelyte
（Φ12×120）mm
BNC
Φ3×1m