At sample times (also known as integration time) greater than 1000 milliseconds, it is impossible to differentiate between the normal signal noise of the spectrometer and a measurable reading of light emission. The readings have no significant meanin...

We do indeed continue to support the original CBL. A great way to get started is by following the instructions in the CBL Made Easy guidebook. In a few simple steps, you will load the programs necessary to collect data with our sensors. We al...

When sending e-mail with the LabQuest 2 or LabQuest 3, the e-mail can fail to send with an error code 76. When you look at the details for that code, it will say: msmtp: TLS handshake failed: The Diffie-Hellman prime sent by the server is not accep...

This lab is typically done with whole leaves (from spinach or other plants) that are placed in our small BioChamber. In the presence of sufficient light of the correct wavelengths, the leaves in the chamber should produce O₂ and should consume ...

If your battery still does not hold a charge or recharge as expected after applying the update, try the following: -From the Home menu, choose System / Shut Down. -Disconnect your LabQuest from AC power and remove the battery. -After waiting for at ...

We encourage you to do some troubleshooting upfront. If you have multiple sets of equipment, try methodically switching interfaces, cables, power supplies, and computing device (computer, Chromebook, etc.) to verify where the issue resides.  The bes...

Purchases may be charged sales tax, depending on the state and the specifics of the order. If we are not billing a school or school district (even if we ship to the school), the order is taxable. Individuals are not tax-exempt. Please contact our off...

This information pertains to the original LabQuest and LabQuest 2. If you have a LabQuest 2, see this article. The first time you use a printer with LabQuest, it must be installed on the LabQuest. See the 'Printing from LabQuest' section of the...

The clear storage bottle containing the damp yellow sponge provides better protection for the probe during storage. Remove the entire bottle to use the Optical DO Probe. If you are conducting a one-point calibration, the clear storage bottle with...

The Diffraction Apparatus (DAK) includes a set of slits and a red laser. The slit dimensions and laser wavelengths are critical dimensions for comparing experimental results with theory. The tolerance of slit widths and separations is 3-4 microns...