Spike recording and microiontophoresis (Carbostar-1)

Our Carbostar series carbon fiber (CF) microelectrodes are made of 7 μm PAN-type graphite monofilament built in borosilicate glass sheathing that provides mechanical support and electrical insulation. They are excel- lent for extracellular potential or spike recordings as well as for electrochemical measurements in vitro or in vivo. These CF microelectrodes are manufactured by a unique dry fabrication method so their storage and shipping over great distances are safe. Iontophoresis barrels are self-filling which make their usage easy with plug and play simplicity. Multibarrel models are always manufactured freshly so allow about a 10-day lead time after placing the order. Their guaranteed shelf life is three months. A female socket mating with the gold- plated pin atop is provided in all shipments. The multibarrel models are also suitable for drug delivery by pres- sure ejection. Standard taper lengths is about 10 mm long. Custom modifications of the standard models are possible for an extra fee. Send in your sketch for a price quote.

Electrochemistry and biosensor applications (CFE series)

Our CFE, CDE and CDDE series carbon microelectrodes are specifically developed for electrochemical measurements such as amperometry or fast-scan cyclic voltammetry (FSCV) as well as they can provide excellent base electrodes in micro-biosensor applications. These microelectrodes are manufactured by a unique dry fabrication method so their storage and shipping over great distances are safe. The lead element carbon fibers are encapsulated in thick borosilicate glass for durable mechanical support and electrical insulation. An exceptional hermetic seal between the carbon core and the glass sheathing allows usage of these electrodes in any environment. Microelec- trodes are manufactured using two sizes and types of carbon fibers as shown on the respective data sheets.

Spikelmplant-1 Implantable miniature carbon fiber microelectrode

A marvel of miniaturization, this multifunction microelectrode can be as short as 10 mm of total length. A 10 μm carbon fiber is encapsulated in solid borosilicate glass for durable mechanical support and electrical insulation. Its exposed tip serves as a working microelectrode whilst it makes good electrical connection with a micro miniature gold-plated pin atop. A mating female socket is provided with pre-attached insulated lead wire. The conical glass ending and a sharp carbon tip allow easy brain penetration with minimal tissue damage. Two carbon tip lengths are offered: 25 micrometer for neuroelectrical, and, 100 micrometer for neurochemical applications. The carbon tip can be developed into more specific biosensors of many types. Standard lengths are shown; longer than 3.5 mm glass shanks are available on request.

Tunglass-2 tungsten microelectrodes with glass insulation of extreme durability

Manufactured by proprietary method, this glass insulated tungsten microelectrode represents a truly exceptional solution to many drawbacks associated with more traditional metal microelectrodes. The industry standard gold-plated pin on top allows a low-resistance galvanic connection to most headstage probes. The 1.5 mm outer diameter borosilicate glass sheathing provides an additional support for the fine tungsten wire and allows a convenient way to handle and to attach this microelectrode to any holder. Next to the holder section, the glass forms a 40 to 80 micrometer thick electrically insulating layer sturdily adhering to the lead element tungsten wire for about a length of 35 mm. Finally, the glass insulation tapers onto the tungsten tip, etched to standard, fine or extra-fine profile.

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