Standard Operating Procedure (SOP) - McMaster Department of ...

SOP – Handling Concentrated Bases.
Before proceeding, you must have read and are familiar with the MSDS for each of the
hazardous materials you will be using. All Material Safety Data Sheets (MSDS) are
located in room JHE 248 top shelf East Wall.
Ensure the spill kit is available in the event of an exposure. The base spill kit is located
on the West Wall beside the door in room JHE-240. Do Not use the Acid spill kit to
absorb a Basic spill.
#4 Engineering / Ventilation Controls
All work with concentrated bases must to be done in the fume hood, with no other
persons working close enough to interfere or come into contact with the base; someone
must be in the immediate area in case of an emergency, the protective shield on the fume
hood drawn down as much as possible, but allowing to work comfortable. Make sure
when you are dispensing the bases that the bottle being dispensed in is far enough in the
fume hood so that fumes will not come back to the users face.
#5 Special Handling Procedures and Storage Requirements
Store all basic waste in labeled chemically compatible containers (e.g., polyethylene or
Teflon). Do not store in glass, metal, and ceramic containers, as they are not compatible
with some bases.
Store all concentrated bases containers in the base cabinets in its proper secondary
containment tray. Bases are stored under the fume hood separate from the acids.
Place a secondary containment tray in the fume hood, when handling and pouring
concentrated bases. In case you overfill or spill the solution, it will stay in this secondary
containment.
No rinse water with pH above 9 may be drain disposed.