• Colorimeter
• 15 polystyrene cuvettes
• 15 plastic cuvette lids

Choose a platform below to see its compatibility requirements.

LabQuest

Interface	LabQuest App
LabQuest 3	Full support
LabQuest 2 (discontinued)	Full support
LabQuest (discontinued)	Full support

Computers

	Software
Interface	Graphical Analysis	Logger Pro	Logger Lite
LabQuest Mini	Full support	Full support	Full support
LabQuest 3	Full support	Full support	Incompatible
LabQuest 2 (discontinued)	Full support	Full support	Full support
LabQuest Stream (discontinued)	Full support 1	Full support	Full support 1
Go!Link	Full support 2	Full support 2	Full support 2
LabQuest (discontinued)	Full support	Full support	Full support
LabPro (discontinued)	Incompatible	Full support	Full support

Compatibility Notes

1. Connect LabQuest Stream via USB. Wireless connection is not supported.
2. This sensor and interface combination can be problematic when measuring at 565 nm.

Chromebook

	Software
Interface	Graphical Analysis
LabQuest Mini	Full support
LabQuest 3	Full support
LabQuest 2 (discontinued)	Full support
LabQuest Stream (discontinued)	Full support 1
Go!Link	Full support 2
LabQuest (discontinued)	Full support

Compatibility Notes

1. Connect LabQuest Stream via USB. Wireless connection is not supported.
2. This sensor and interface combination can be problematic when measuring at 565 nm.

iOS

	Software
Interface	Graphical Analysis	Graphical Analysis GW
LabQuest Stream (discontinued)	Full support	Full support
LabQuest 3	Full support 1	Full support 1
LabQuest 2 (discontinued)	Full support 1	Full support 1

Compatibility Notes

1. iOS and Android^™ devices can only connect to LabQuest 2 or LabQuest 3 via Wireless Data Sharing.

Android

	Software
Interface	Graphical Analysis	Graphical Analysis GW
LabQuest Stream (discontinued)	Full support	Incompatible
LabQuest 3	Full support 1	Full support 1
LabQuest 2 (discontinued)	Full support 1	Full support 1

Compatibility Notes

1. iOS and Android^™ devices can only connect to LabQuest 2 or LabQuest 3 via Wireless Data Sharing.

Arduino

	Software
Interface	Arduino
Vernier Arduino® Interface Shield	Full support

LabVIEW

	Software
Interface	NI LabVIEW
SensorDAQ (discontinued)	Full support
Vernier myDAQ Adapter	Full support 1
Go!Link	Full support 2
LabQuest Mini	Full support
LabQuest Stream (discontinued)	Full support
LabQuest 3	Full support
LabQuest 2 (discontinued)	Full support
LabQuest (discontinued)	Full support

Compatibility Notes

1. You can only read the raw count/raw voltage output by this sensor. You must do the programming to convert to proper sensor units.
2. This sensor and interface combination can be problematic when measuring at 565 nm.

Texas Instruments

	Software
Interface	EasyData	DataMate	TI-84 SmartView	DataQuest	TI-Nspire Software
EasyLink	Full support 1 2	Incompatible	Full support 2 3	Full support 2	Full support 2 3
CBL 2 (discontinued)	Full support 4	Full support 4 5	Incompatible	Incompatible	Incompatible
LabPro (discontinued)	Full support 4	Full support 4 5	Incompatible	Incompatible	Incompatible
TI-Nspire Lab Cradle (discontinued)	Incompatible	Incompatible	Incompatible	Full support	Full support

Compatibility Notes

1. Use with TI-84 Plus calculators only.
2. This sensor and interface combination can be problematic when measuring at 565 nm.
3. Requires an Easy to Go! adapter
4. CBL 2 and LabPro interfaces cannot be used with TI-84 Plus CE calculators.
5. DataMate cannot be used with color screen TI-84 Plus calculators; use EasyData with these calculators.

1. Connect the sensor to the interface (LabQuest Mini, LabQuest 2, etc.).
2. Start the appropriate data-collection software (Logger Pro, Logger Lite, LabQuest App) if not already running, and choose New from File menu.

The software will identify the sensor and load a default data-collection setup.

If you are collecting data using a Chromebook™, mobile device such as iPad^® or Android™ tablet, or a Vernier wireless sensor or interface, please see the following link for up-to-date connection information:

www.vernier.com/start/col-bta

Connect the sensor following the steps in the Getting Started section of this user manual. After connecting the sensor, the following steps must be completed prior to starting data collection.

1. Press the < or > button on the Colorimeter to select the correct wavelength for your experiment (430 nm, 470 nm, 565 nm, or 635 nm).
2. Allow the Colorimeter to warm up for about five minutes before calibrating.
3. Calibrate the Colorimeter.
   1. Slide the lid of the Colorimeter open to reveal the cuvette slot.
   2. Insert a cuvette, filled with distilled water or other solvent used to prepare your solutions, for your calibration blank (100% transmittance or 0 absorbance).
      Important: Line up one of the clear sides of the cuvette with the arrow at the right side of the cuvette slot. Slide the Colorimeter lid closed.
   3. Press the CAL button on the Colorimeter to begin the calibration process. Release the CAL button when the red LED begins to flash.
   4. When the red LED stops flashing, the calibration is complete. The absorbance reading should be very close to 0.000 (100%T).
   5. Remove the blank cuvette from the Colorimeter.
4. Continue with data collection.

Colorimeter range	0 to 3 (absorbance)
Useful range	0.05 to 1.0 absorbance (90% to 10% T)
Wavelengths	430 nm, 470 nm, 565 nm, 635 nm
Supply voltage	5VDC ±25 mV
Supply current (typical)	40 mA
Power up time	700 ms (maximum)
Output voltage range	0 to 4 V
Transfer function	Vout = 0.035*(%T)+0
Stored calibration values	slope: 28.571 intercept: 0

Light from an LED light source passes through a cuvette containing a solution sample. Some of the incoming light is absorbed by the solution. As a result, light of a lower intensity strikes a photodiode.

Here are some tips for best data-collection practices:

• Allow the Colorimeter to warm up for about 5 minutes before calibrating.
• Fill a cuvette two-thirds to three-fourths full with liquid, including the calibration blank, so that the light travels through the liquid reliably.
• After filling a cuvette with liquid, seal the cuvette with a cap to prevent spills.
• Make sure to place a cuvette in the Colorimeter so the path of the light source travels through the clear sides of the cuvette. An arrow to the right of the cuvette slot shows the light path.
• For best results, use one cuvette to make all your measurements for a given experiment.
• If you calibrate a Colorimeter and then change the wavelength, calibrate the Colorimeter again to ensure the proper identification of the new wavelength.

For best results, a sample's absorbance or transmittance values should fall within these ranges:

• percent transmittance:10–90%
• absorbance: 0.05–1.0

We have found that Beer’s law experiment results begin to lose their linearity at absorbance values above 1.0 (percent transmittance values less than 10%). If you have a solution that transmits such a low level of light, consider diluting the solution so that it falls within this range.

If you have watched the related product video(s), followed the troubleshooting steps, and are still having trouble with your Colorimeter, contact Vernier Technical Support at support@vernier.com or call 888-837-6437. Support specialists will work with you to determine if the unit needs to be sent in for repair. At that time, a Return Merchandise Authorization (RMA) number will be issued and instructions will be communicated on how to return the unit for repair.

Item	Order Code
Replacement cuvettes (package of 100 with 20 lids)	CUV
Replacement cuvette lids (package of 100)	CUV-LID
Cuvette rack, holds 10 cuvettes	CUV-RACK

Vernier warrants this product to be free from defects in materials and workmanship for a period of five years from the date of shipment to the customer. This warranty does not cover damage to the product caused by abuse or improper use. This warranty covers educational institutions only.

This warranty does not cover consumables, such as the cuvettes and lids.