Electrodes
-- Electrode Chlorinator -- Electrode
Holders -- Electrode storage container
Electrodes 
EAG-01 - Non-polarizing electrodes
specially designed for BLM applications. Active element consist of
a thick (1-2 mm in diameter) layer of Ag/AgCl powder around 0.25 mm silver
wire. Will never need re-chlorination and lasts up to several years under
normal usage. Wire is soldered to 1 mm gold-plated male connector
allowing direct insertion into inputs of
BBA-01A
or other amlifier headstages. Connection is insulated with silicone
rubber polymer. Fit in standard pipette tip which must be filled
with agarose gel and KCl solution before use.
EAG-01P- A
pair of EAG-01 electrodes. Completely assembled, filled with 0.2 M KCl
and 2% agarose, electrically balanced, tested and ready for use.
EAG-02 - 1
mm diameter silver wire electrodes. Consist of 50 mm of pure silver
wire partly encapsulated into plastic cylinder that fit into standard pipette
tip. ~10 mm long wire end out of the tip serve as a male connector.
If necessary, part of wire that is inside the tip can be flattened to increase
the area of contact with solution. These electrodes need chlorination
before you start using them and may be re-chlorinated many times.
AT-02- Replacement
agarose filled tips. Shipped in a tube with 0.2 M KCl solution.
EW-01 - Set
of extension wires for connection with remotely placed amplifier headstage.
Consist of two flexible wires 5 cm (2") and 15 cm (6") long for signal
and ground electrodes. Each wire has 1 mm male connector at
one end and 1 mm female connector on the other end. Suitable for
both BBA-xx and Axon amplifier headstages.
FC-
1 - Spare Female
Connector, 1 mm diam.
MC-1 - Spare Male Connector, 1
mm diam.
Electrode
Chlorinator.
If you are making your own AgCl
covered electrodes from silver wire, you may find our compact electrode
chlorinator much more convenient than system you currently use. Two
modifications are available. Both have 1 mm gold plated connectors
for electrodes, and switch that allow selection between 0.2 or 1 mA current
*. ECL-2A
has an internal 9V battery that is sufficient for several hundreds hours
of work. Low battery (<6.5V) indicator will show when battery
need replacement. ECL-2B
is similar to ECL-2A but, in addition to the battery, it has external power
conector that allow unlimited usage of the device without taking care of
battery replacement.
Battery, wall transformer and a
brief manual are included.
* - Short circuit current for fresh 9V battery.
Actual current is lower, and dependent on selected KCl concentration and
age of the battery.
Electrode Holders
If direct mounting of electrodes on a head stage is not
possible, an additional electrode holders are required. Different
BLM Cells require different kinds of electrode holders. Top left
photo shows aluminum electrode holder (Part # EH-1)
designed to hold a pair of electrodes on a support stand assembled from
the standard ½” mounting posts. It has ¼-20 tpi thread
for axial mounting, and 6.5 mm hole for side mounting to a post.
Photo in the center, shows EH-2 electrode
holder suitable for use with three compartment BC-30D
cell.
L-shaped plastic holder is mounted on a 4 mm diameter, 80 mm (~3") long
stainless steel rod (included) and can be fixed at different height using
M4 screw. Top right photo, show a pair of EH-3A
electrode
holders we recommend for BCH-1 horizontal cell. This holder
consist of a magnetic base, and plastic electrode holders attached to a
steel ball that is magnetically attached to the base. Base have threaded
hole for mounting to microscope stage, and freely rotating ball joint permit
easy adjustment of the electrode position. All holders are designed
for mounting of EAG-01 type electrodes but
can be easily modified to hold other electrode types.
Electrode
storage container. This simple inexpensive
container is useful for keeping electrodes in a good working condition
between experiments. It is actually a small (25x25x18 mm) plastic
box, with two small holes in the top cover that can be filled with KCl
solution used for electrode storage. Small area of holes do not allow
solution to evaporate quickly, so you can leave electrodes in it for at
least two weeks and not to worry that they will dry.
Part # SB-1
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09-09-2019 Electrodes.html