Apera Instruments LabSen 221 User Manual

for Viscous and Low Ion Concentration Samples
LabSen ® electrochemical sensors are premium pH electrodes with manufacturing technology and
key components imported from Switzerland. The LabSen
designed for precise pH measurement in viscous and low ion concentration samples.
This probe has the following features:
 Impact-resistant membrane (see the right picture), there is no danger of
electrode breakage during normal use.
 Movable sleeve, able to adjust infiltration rate of electrolyte.
 Blue gel inner solution, does not flow and will not cause a bubble.
 Long life reference system, has better stability and service life.

Technical Data

1
Measuring Range
Temperature Range
Shaft Material
Membrane Shape
Reference
Junction

How to Use the Movable Sleeve

2
As shown on the right picture, reference solution flows out of the
small hole, seeps through the tapered surface of movable sleeve.
You may adjust the degree of firmness when use, push up the
movable sleeve to loose. If it is too tight to push, please referring to
the right picture: insert the probe into the round tube (the accessory
comes with the probe), and push down the probe, then the movable
sleeve will be loosen. Please pay attention to remove the rubber
plug when adjusting the movable sleeve, enables reference solution
flowing out of the small hole; then slowly rotate and tighten the
movable sleeve, so that there will be no air remain in the tapered
surface of movable sleeve, which can greatly influence the correct
measurement of the probe.
LabSen® 221 Combination pH Electrode
User Manual
(0 ~ 14) pH
(-5 ~ 80)°C
Lead-free Glass
Cylindrical
Long Life
Movable Sleeve
® 221 Combination pH Electrode is
Electrolyte
Soaking Solution
Electrode Dimension
Connector
Cable
3M KCl
3M KCl
(Ø12×130) mm
BNC
Ø3×1m