Team:Brown/Project/Testing
From 2008.igem.org
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You can take readings in units of conductivity (µS/cm) or concentration (mg/L TDS as NaCl). The Conductivity Probe can monitor conductivity at three different sensitivity settings: | You can take readings in units of conductivity (µS/cm) or concentration (mg/L TDS as NaCl). The Conductivity Probe can monitor conductivity at three different sensitivity settings: | ||
- | + | * 0-100 mg/L TDS or 0-200 µS/cm | |
- | + | * 0-1000 mg/L TDS or 0-2000 µS/cm | |
- | + | * 0-10000 mg/L TDS or 0-20,000 µS/cm | |
Conductivity is directly proportional to concentration over the entire range. | Conductivity is directly proportional to concentration over the entire range. |
Revision as of 04:03, 29 October 2008
Resistance
Our First Apparatus
Revisions to the First Apparatus
The FINAL Apparatus
You can take readings in units of conductivity (µS/cm) or concentration (mg/L TDS as NaCl). The Conductivity Probe can monitor conductivity at three different sensitivity settings:
Conductivity is directly proportional to concentration over the entire range. The probe has a fast response time, reaching 98% of full value in less than 5 seconds. You can load saved calibrations using any of the Vernier data-collection programs. Alternatively, you can do a quick two-point calibration: the probe is left out of solution for one calibration point (0 µS/cm) and is placed in a known standard (1000 µS/cm solution is provided) for a second calibration point. More precise calibration in two different standards is also possible using our software. The Conductivity Probe uses alternating current at its electrodes; this prevents polarization and electrolysis, so that solutions being tested are not fouled. Corrosion of metal electrodes is not a problem with this epoxy-body graphite electrode. It has built-in temperature compensation, which allows you to do your calibrations in the lab, and then make measurements outdoors without temperature changes affecting conductivity readings. -http://www.vernier.com/probes/con-bta.html |