Purchase of Controlled Items

Many kinds of chemicals and equipment are regulated by different authorities. These controlled items may require licenses to store or use them whereas some would have a maximum allowable quantity (MAQ) that can be kept in the school. In order to ensure, the requirements are followed, these chemicals and equipment needs to be tracked. If the items you are purchasing via ARIBA is listed as a controlled item, please indicate it as a controlled item by clicking ‘Yes’ in the purchase requisition (PR).
Controlled item button.png 

Please refer to the following SOP for procedure on purchasing chemicals.

​List of ​Control​led Items

​A) Petro​​l​eum & Fla​m​​mable Materials / Hazardous Substances / Biological Agents & Toxins / CWCs / E​​Ps under the Regulated Chemical List

B) Flamm​able Gases/Gas Mixtures

These include gases such as Hydrogen, Ethylene, Methane and gas mixtures such as 5%H2 + AR balance. (Note: This list is not exhaustive)

Please refer to Safety Data Sheets of the gases/gas mixtures that you intend to purchase in order to determine if these gases/gas mixtures are flammable.

C) High Pow​er Lasers

High power lasers of Class 3B and above.

D) Ultrasonic B​aths/Sonicators

Ultrasonic Baths/Sonicators with power output of 1200 Watts and above.

E) Metal​​lic Mercury and Merc​ury containing devices

These include liquid mercury of any kind, either in an instrument (such as a thermometer, manometer or McCloud gauge), a bubbler, or just in a bottle.​


F) Special Cabin​ets(Please refer to the ta​ble below)

​Yellow flammable cabinets for storage of flammable solvents Yellow cabinet.jpg

​Grey cabinets for storage of chemicals Grey cabinet.jpg

​Acid cabinets for st​orage of corrosive acids ​ Acid cabinet.jpg



G) Pressure Vessels (​Please refer to the table below)

​Air Receiver / Air Compressor air1.jpgair2.jpg
​Autoclave (Steam Boiler) Boiler.jpg

​Hoisting/Lifting Equipment/Cranes


​Hydrothermal Vessels/ metal pressure reaction vessels Hydrothermal.jpg