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| DVC-1000 Two-Channel Voltage / Current Clamp |
 WPI's DVC-1000 is well-known and widely used for studying epithelial tissues. Each DVC-1000 consists of two separate clamp instruments -- One for clamping a control tissue, another for clamping a test tissue. This dual clamp technique lets you monitor changes in membrane permeability as a function of voltage or applied chemical agents.
Either clamp unit operates in five modes. Voltage clamp: Clamps the tissue voltage to a given level and displays the current required to maintain that level. Amplify: Shows the potential difference between the two voltage electrodes. Current clamp: Lets you deliver a constant current between the two current electrodes while simultaneously monitoring voltage changes at the tissue. |
| Timer: Functions in either current clamp or voltage clamp experiments, letting you cycle automatically between zero clamp and a preset clamp level. Remote: Allows you to control clamp operation from a computer or other logic level source.
Small preamplifiers (included) which mount close to the chamber let you connect to voltage and current electrodes without long cables or agar bridges. DVC-1000 also features a unique ±100 V power supply capable of delivering up to 1 mA of clamp current. Each clamp lets you correct for input offset voltages and fluid resistance error. |
| DVC-1000 SPECIFICATIONS |
| PROBES |
INPUT IMPEDANCE
|
1012 Ohms |
LEAKAGE CURRENT
|
100 pA max |
MAXIMUM INPUT VOLTAGE
|
10 V |
| VOLTAGE CLAMP |
CLAMP VOLTAGE RANGE:
|
SET CLAMP POT
|
±100 mV |
EXTERNAL COMMAND
|
±1 V |
COMMAND FACTOR
|
10 mV/mV |
MAX. CLAMP CURRENT
|
±1 mA |
| CURRENT CLAMP |
| CLAMP CURRENT RANGE: |
SET CLAMP POT
|
±1 mA |
EXTERNAL COMMAND
|
±1 mA |
COMMAND FACTOR
|
1 mV/µA |
COMPLIANCE
|
±100 V |
| INPUT OFFSET RANGE |
±130 mV |
| FLUID RESISTANCE |
COMPENSATION RANGE
|
0-1000 Ohms |
| TEST CURRENT |
10 µA adjustable |
| OUTPUT RESISTANCE |
100 Ohms |
| TIMER RANGE |
500 ms to 500 s each side |
| LCD METER |
TYPE
|
31/2 digits with Noiselok™ |
| MAX. READING |
2000 µA, 200 mV |
| POWER REQUIREMENTS |
95-135 V or 220-240 V, 50/60 Hz |
| DIMENSIONS |
17 x 8.75 x 9.5 in. (43 x 22 x 24 cm) |
| SHIPPING WEIGHT |
21 lb (9.5 kg) |
| DVC-1000 |
Voltage Current Clamp |
Includes two DVC3 preamps and one DVC2 dummy membrane.
|
Specify line voltage
|
OPTIONAL ACCESSORIES |
| DVC3 |
Replacement Preamplifier |
| 2935 |
Rack Mount Kit |
| EK1 |
Ussing Electrode Kit (2 voltage, 2 current) |
| EKC |
Extra Ussing Current Electrode (red) (each) |
| EKV |
Extra Ussing Voltage Electrode (blue) (each) |
