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Epithelial Voltohmmeter
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- Manual TEER measurement of epithelial cells in 24- and 96-well plates.
- Battery powered and electrically isolated
- AC current avoids adverse effects on tissue
- Compatible with Endohm chamber
- STX2 manual electrode included with meter
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| Description |
TEER Measurement
The EVOM was the first instrument designed specifically to perform routine TEER (Trans Epithelial Electric Resistance) measurement in tissue culture research. The battery-powered EVOM produces an AC current that avoids adverse effects on tissues, which can otherwise be caused, by a DC current - including electrode metal deposits. The EVOM has an easy-to-read LC display and is also available with a BNC recorder output (EVOMX). Input impedance of the EVOM is greater than 1010 ohm, and resistance ranges from 0 to 1999 ohm; and 0 to 20,000 ohm can be monitored using the switchable range setting located on the instrument front panel.
Chopstick electrode set
One unique feature of the EVOM is that resistance readings are unaffected by membrane capacitance and membrane voltage. The membrane voltage reading range is ±200?mV. EVOM comes complete with the popular STX2 “Chopstick” electrode set. The STX2 consists of a fixed pair of double electrodes, 4 mm wide and 1 mm thick. Each stick of the electrode pair contains a silver/silver-chloride pellet for measuring voltage and a silver electrode for passing current. The small size of each electrode is designed to facilitate placement of the electrodes into cell culture wells. STX2 can be used with all tissue culture inserts currently on the market. For more accurate quantitative measurements and/or for lower resistance measurements (e.g., endothelial tissue cultures) the EVOM can be used in conjunction with the optional Endohm chambers. |
| Specifications |
| MEMBRANE VOLTAGE RANGE |
±199.9 mV |
| INPUT IMPEDANCE |
>1010 MΩ |
| RESISTANCE RANGES |
0 To 1999 MΩ, 0 to 20,000 MΩ |
| AC SQUARE WAVE CURRENT |
±20 ?A at 12.5 Hz |
| POWER |
One 9 V alkaline battery, and six 1.5 V alkaline AA batteries, supplied |
| SHIPPING WEIGHT |
3 lb (1.4 Kg) |
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| Manuals and Resources |
Instruction Manual
evom-im-021308.pdf |
| References |
Have you seen a reference to this product in a published paper? If so, email your contact information and the citation and we will send you a free gift! |
| Ordering Information |
To place an order for this product, please contact the appropriate WPI office or distributor.
Customers can order direct from our China office:
WPI China
Address: Rm.20A, No.8 Dong Fang Rd, Liang Feng Building, Lu Jia Zui Financial District, Shanghai PRC
Phone:+86 21 68885517
Fax:+86 21 68885537
Code:200120
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| Accessories |
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| Application Notes |
Application Notes
No Application Notes available for this product at this time. |
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