Lab safety refresher

Name?

Things with silver paint/ silver epoxy on it: are they considered chemically contaminated?

Yes

Explanation for the last question: heavy metals are considered hazardous. So any silver etc containing things are chemically contaminated

I see. So for objects in contact with silver paint/ epoxy: the non-sharps (gloves, cotton swabs, wooden sticks, fab wipes, etc) go in the black bucket, and the sharps (glass slides etc) go in the big hard pastic walled container. And remember to put down "silver paste/ epoxy" and check "toxic" on the red tag!

When you have old chemical bottles to discard, please follow the guidelines posed on the fume hood. The procedures for PC and PMMA bottles are described - please let me know if you want to discard anything else.

Yes! I will follow the guidelines and properly dispose of the chemical and bottle

I don't care and I will just leave them around for Xueqiao to do the work

How to dispose of a PC slide after transfer?

	Regular trash	Black bucket (chemically contaminated non-sharps)	Big carton (clean glass for recycling)	Hard walled plastic container (chemically contaminated sharps)
The tape + broken PC + PDMS
The glass slide

The answer is:

tape + broken PC + PDMS: regular trash

glass slide: big carton for recycling

The answer is:

tape + broken PC + PDMS: regular trash

glass slide: big carton for recycling

Things to remember about chemical waste

One container per waste stream. Never start a new container if an existing one is in use

Once a container is full, date it, place it by the door and put in a pickup request on Atlas RIGHT AWAY

About common use chemicals (acetone, IPA, water, PG remover, etc):

Only ONE opened bottle at a time! This opened bottle should be behind the metal doors on the right side under the hood

All other, unopened, bottles should sit in the lower left cabinet, OUTSIDE the secondary container for waste

Only open a new bottle when the old one is used up. Take the bottle of the earliest arrival date from the lower left cabinet, and store in the lower right one.

Note about recycling: for any recycable materials, most commonly cardboard boxes- packages or boxes from the fab lab, please break them down and bring them to the central area by the water fountain. (Just because I care about recycling and I feel bad when I see the custodian picking out landfill trash from the recycable materials from the small bins in the hallway, and then breaking the boxes down)

OK! I'm happy to help with recycling!

Any questions/ thoughts/ concerns/ comments?

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