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Vernier Drop Counter Manual

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Vernier Drop Counter
(Order Code VDC-BTD)
The Vernier Drop Counter is used to perform
accurate, automatic titrations. This digital sensor
can be used in conjunction with a pH Sensor (or
other sensor) to accurately record drops of titrant
added (or mL of titrant, with calibration of drop
size) during a titration. Using the Vernier Drop
Counter, you can perform the following kinds of
experiments:
Collect pH vs. volume data in a typical acid-
base titration.
Collect conductivity vs. volume data using a
Vernier Conductivity Probe and the Vernier
Drop Counter (conductimetric titration).
Collect ISE mV vs. volume data using a
Vernier ISE Sensor and the Vernier Drop
Counter.
Collect mV vs. volume data using a third-party ORP or ISE with the Vernier
Electrode Amplifier and the Vernier Drop Counter.
Collect temperature vs. volume data using a Stainless Steel Temperature Probe
(or monitor temperature simultaneously with pH).
NOTE: This product is to be used for educational purposes only. It is not
appropriate for industrial, medical, research, or commercial applications.
What is included with the Vernier Drop Counter?
Vernier Drop Counter sensor
A cable that connects the Vernier Drop
Counter to a DIG/SONIC channel of the
Vernier LabPro, Vernier LabQuest
or CBL 2™ interface.
Plastic reagent reservoir
Plastic valve with a double stopcock
fitting (screws onto the base of the
reagent reservoir, with a gentle half
turn)
TM
Vernier Microstirrer, a stirrer that fits onto the
tip of your pH Sensor, and is used along with a
standard magnetic stirring plate
Drop Counter sensor booklet (this booklet)
How the Vernier Drop Counter Works
The Vernier Drop Counter has an optical-path slot
that is 5.7 cm (2.25 in.) in length. When the infrared beam between the source and
detector is blocked by a drop of titrant, a digital signal is sent to the LabPro, and the
data collection program records a drop. The drops are then converted to volume units
(e.g., milliliters), using a calibration feature in our software.
Using the Drop Counter with a Computer, TI graphing calculator,
LabQuest, or PalmOS handheld
1. Install the required software.
If using a computer, Logger Pro 3 version 3.5 or newer is the preferred choice.
If you do not have Logger Pro 3, install the Drop Counter software available at
www.vernier.com/labview/software/dropcounter.html.
If using a TI graphing calculator, install either the EasyData or DataDrop
program available at www.vernier.com/calc/software.
If using a Palm OS handheld, make sure you are running Data Pro version 1.15
or newer.
Computers (Logger Pro 3 or Drop Counter software)
Logger Pro 3 is the preferred computer software for use with the Vernier Drop
Counter. The separate Drop Counter application is necessary only if you are using a
Vernier LabPro, but are unable to upgrade from Logger Pro 2 to Logger Pro 3.
TI Graphing Calculators (DataDrop or EasyData program)
At www.vernier.com/calc/software/datadrop.html, there are links for downloading
versions of the DataDrop calculator program for each type of TI graphing calculator
with which you can perform experiments using a Drop Counter. Using TI Connect™
software or TI Connect along with a
one of these programs onto your TI handheld.
Note: TI-83 Plus and TI 84 Plus users may prefer to load the application called VST
Apps that includes all the Vernier supplemental applications including DataDrop.
VST Apps can be downloaded from our website, www.vernier.com.
You may also use the EasyData App to operate the Drop Counter. You can
download EasyData from our web site at: www.vernier.com/easydata.html.
Palm OS Handhelds (Data Pro version 1.15 or newer)
When using the Drop Counter with a Palm OS handheld and LabPro, you will use
the general data-collection program, Vernier Data Pro. You may, however, need to
update your current version of Data Pro to version 1.15 or newer. To do that, go to
the Software Downloads section of our web site, www.vernier.com.
cable, you will need to load
TI-GRAPH LINK
2

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Summary of Contents for Vernier Drop Counter

  • Page 1 If using a computer, Logger Pro 3 version 3.5 or newer is the preferred choice. base titration. If you do not have Logger Pro 3, install the Drop Counter software available at • Collect conductivity vs. volume data using a www.vernier.com/labview/software/dropcounter.html.
  • Page 2 Computer (Using Logger Pro 3 software) center of the stirrer. If using Logger Pro 3 software, open the file “Drop Counter-pH” from the Drop Remove the pH storage bottle from the pH Counter folder. The Drop Counter folder is located in the Probes & Sensors folder.
  • Page 3 The Manual Entry tab allows you to enter the Slope and Intercept values determined through the Vernier Drop Counter and dividing by the total volume of the drops. To during a previous two-point calibration.
  • Page 4 Using other Sensors with Drop Counter Vernier Drop Counter can be used with other Vernier sensors such as our Ion- Selective Electrodes, Conductivity Probe, or older Vernier pH Sensors that do not auto-ID. It can accommodate third-party electrodes when used in conjunction with our Electrode Amplifier.
  • Page 5: Limited Warranty

    DataDrop (TI graphing calculators) and Data Pro (Palm OS handhelds) 1. Connect a Vernier auto-ID sensor, then press the Clear button on a TI graphing calculator, or choose New from the Data Pro menu with a Palm OS handheld. In both cases, the sensor you have connected should automatically be identified, and a calibration loaded.
  • Page 6 • www.vernier.com Rev. 10/2/07 Logger Pro, Logger Lite, Vernier LabQuest, Vernier LabPro, Go! Link, Vernier EasyLink and other marks shown are our trademarks or registered trademarks in the United States. CBL 2 and CBL, TI-GRAPH LINK, and TI Connect are trademarks of Texas Instruments.