CEMS Chemical Inventory System Barcode

Three federal agencies (EPA, OSHA and the Department of Homeland Security) require that owners of hazardous chemicals maintain an accurate inventory of those materials.

At Connecticut College, purchasers of laboratory chemicals are responsible for maintaining that inventory by entering their chemicals into the “CEMS” Chemical Database, and for deleting empty containers. Below are step-by step instructions for adding and deleting chemicals from the database and accessing the associated Material Safety Data Sheet (MSDS).

First, log into CEMS with your email address and Password. This will bring you to the CEMS home page.


  1. From the main screen, click on "Add Chemical Inventory" in the menu box.
  2. "Set Owner" (If the chemical is for general stock use, and will be stored in the Stockroom, start typing "Chemistry General Storage". The field should auto-populate itself.)
  3. "Set Location". This should auto-populate too, but if not, enter "Hale Laboratory 022 - Chem Storage".
  4. Enter the bar code number. If you have multiple containers of the same chemical, enter all bar code numbers in the "Scan or enter bar code" box, separated by a comma and a space (e.g., 7794, 7795, 7796, etc.)
  5. From the container label, enter the "Chemical Product Number". If the chemical is in the system (and it should be) all the remaining fields will auto-populate.
  6. Click "Save".
  7. This will bring you back to the start of the process for the next chemical container.

DELETING CHEMICALS (Marking containers as "Empty")

  1. From the main screen, click on "Search Inventory" in the menu bar.
  2. Enter the barcode number of the container to be deleted. Click "Search."
  3. Click on the "mark empty" box.
  4. If multiple containers need to be deleted from the system, click on "Update Inventory" from the main screen. Follow the procedures above for entering multiple barcode numbers to be updated.


Adobe Reader is required to view (most) (M)SDS in this database.

  1. The easiest way of obtaining the SDS, is to enter the container's barcode number on the "Search Inventory" page.
  2. You can also search for a MSDS by entering the "Chemical Name," Product Number, Molecular Formula or CAS number, or browse by Manufacturer on the "MSDS Archive" page.
  3. To print, click the "printer" icon on your browser.