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Important!

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General Hood Usage

Training General 

  1. Get to your equipment training 5 minutes early.  Staff do not want to wait on you to gown up / get notebook / find the right area / etc.
  2. If you cannot attend a training at the last minute, email the staff member.  That is better than not doing anything.
  3. Generally speaking, all equipment trainings occur at the machine.  If in doubt, ask the staff member when you sign up for training.  
  4. Ask staff for any and all help.  We are here to help you.
  5. Come down to the staff office and introduce yourself.  It is nice to make a relationship with you, and that will excel you in your research.
  6. Take notes when you are being trained.  
  7. Be prepared for your equipment training.  Know what you want the machine to do, or achieve.
  8. Just because your professor utters the phrase, "Go Forth, and take all the equipment training" doesn't make it right.  There is a time and place appropriate for each training - like 1 day or so prior to actually needing that machine.

Cleanroom Usage General

  1. Cleanroom general 
    1. Example of airflow and particle rate
    2. Demo of cleanroom wipe and paper vs normal paper
    3. People are the most dangerous and the most dirty thing in there
    4. Particle generation: Talking, cell phone use, quick movement, wafer cleaving

      1. No running / no fast walking - this disrupts air flow

    5. All open liquids must be kept in a hood
    6. You'll be expected to pay for broken equipment, if a result of gross negligence
    7. If you're not in the cleanroom, be sure your tote is in its numbered slot
  2. Supplies
    1. Get from Lorraine Fox (BRK2251, Available 1-2 PM Monday to Friday)
    2. Get glassware and metal tweezers, label glassware with name and professor (and chemical ONLY if specialized)
    3. New glassware needs cleaned, it will come with grease and particles from the factory
  3. Acid Hood:  "AAA" - Always Add Acid (except in the case of Piranha)

Cleanroom Hood Safety

  1. Per REM's Chemical Hygeine plan, all chemicals in the hood must be labeled with:
    1. Researcher First and Last Name
    2. Chemical name (Written out) and Solution Composition (If applicable)
    3. Current Date
  2. Unlabeled chemicals/samples/glassware is considered both trash and a safety hazard, and may be disposed of.
  3. Do not block vents/airholes in the fume hood. This includes the vents at the front of the hood.
  4. Never put your head inside of an in-use hood
  5. Cell phones may not be used in the hood, or handled with chemical gloves
  6. Chemicals must be removed from the hood when finished
  7. Proper PPE
    1. Solvent hood: Chemical/splash goggles and latex gloves.
    2. Acid hood: Orange acid gloves, acid gown, and chemical/splash goggles. A face shield is required when pouring chemicals or using HF/BOE.
  8. ABSOLUTELY remember:
    1. ABSOLUTELY must use proper PPE when doing any wet chemistry
    2. ABSOLUTELY no heads in the fume hood.
      1. Contact engineering staff or Steve Jurss if you have a need and we will figure out a work around.
    3. ABSOLUTELY no concentrated acids or bases in the solvent hood.
      1. Only exception is commercially mixed dilute developers.
    4. ABSOLUTELY no cellphones in the hood or cellphone use with your solvent or acid gloves.
    5. ABSOLUTELY no use of used acid or solvent gloves outside of the hood.
      1. This means no touching of door knobs, equipment, keyboards, mice, microscopes, etc.
      2. A clean pair of latex/solvent gloves can be used for sample prep and under acid gloves if desired.
    6. ABSOLUTELY no wet chemistry done outside the hoods.
      1. If it can spill, it needs to be done in the hood, working 6" from the opening with vents clear.
      2. Exception is quick wipe with either IPA or Acetone, but only with spray onto wipes.
      3. Containers should not be transferred between hoods. If unavoidable, cover with aluminum foil to transport in IPA or water ONLY.
  9. If you see anyone violating these, either talk to them yourselves or talk to BNC Staff.
  10. Our goal is education not punishment, but gross negligence will result in the loss of lab/equipment access until you've been retrained.

Solvent Hood Use

  1. Solvent hood general
    1. Sign in when you get to a hood , and out when you leave
    2. Hood should be free of wipes and chemicals.
      1. Exception is properly labeled chemicals in back of hood, and a single small (<10) stack of dry, unused wipes on opposite side of hood from sink.
    3. Daily use bottles are for spraying only, don't trust them for soaks and sonication.
    4. For soaks/sonication, pour from below the supply cabinet.
      1. These are CLEAN.
    5. Daily use bottles shouldn't be removed from hood.
      1. If they don't appear to work, check under the lid. If it is genuinely cracked, dry it and get a new bottle from supply room, disposing of gloves and getting a new set.
    6. Finish a bottle completely, (can optionally sit on wipe), then blow dry, then place in bin and label with "cleaned" label.
      1. Solvent bottle get a triple air rinse, aqueous developer gets a triple water rinse.
      2. Cap gets dried and thrown in trash.
    7. Get new bottles from the supply cabinet
      1. Use a carrier, or two hands if bottle doesn’t fit securely in carrier.
    8. Place back under hood or back in supply cabinet when done
      1. Contamination issue and explosive hazard of not.
    9. Supply room.
      1. CR wipes, Pipettes, Pens, etc
    10. If you're not at the hood, chemicals need to be labeled and pushed to the back.
      1. Labeled on wipe (or pre-printed label) with:
        1. your name
        2. your research group
        3. the chemical
        4. the time you left the liquid
        5. your planned return time.
      2. If solvent, liquid needs to be covered with foil or an evaporating dish.
      3. Extended processes may be done for up to 72 hrs
      4. Email me if you need longer
      5. Unlabeled chemicals, samples, or glassware is considered both trash and a safety hazard, and will be disposed of.
    11. Halogenated vs nonhalogenated waste.
    12. Basic developers go down drain
    13. Prohibited chemicals in spinner area:
      1. Remover PG
      2. PRS2000
      3. HMDS.
    14. Cleanliness violations are on a 3 strikes system
      1. We DO understand mistakes and forgetfulness happen.
    15. When finished in hood:
      1. Clean up any chemicals on the hood surface
      2. Dispose of wipes
      3. Reset the daily use bottles.
      4. Store any chemical bottles under the hood or in the cabined.
      5. Sign out.

Acid Hood Usage

Proper Orientation for Acid Hood gloves:


Proper Orientation for Acid Gown:

  1. Acid hood general
    1. Sign in when you get to a hood , and out when you leave
    2. Hood should be free of wipes and chemicals.
      1. Exception is properly labeled chemicals in back of hood, and a single small (<10) stack of dry, unused wipes on opposite side of hood from sink.
    3. Finish a bottle completely, (can optionally sit on wipe), then triple rinse in DI H2O, then dry with a wipe/N2 gun, then place in bin and label with "cleaned" label.
      1. Cap gets dried and thrown in trash.
    4. Get new bottles from the supply cabinet using a chemical carrier
    5. Place back under hood or back in supply cabinet when done
      1. Contamination issue and explosive hazard if not.
    6. The supply room has extra CR wipes, Pipettes, Pens, etc if needed. Do not touch the door with acid gloves.
    7. If you're not at the hood, chemicals need to be labeled and pushed to the back.
      1. Labeled on wipe (or pre-printed label) with:
        1. your name
        2. your research group
        3. the chemical
        4. the time you left the liquid
        5. your planned return time.
      2. Extended processes may be done for up to 72 hrs
      3. Unlabeled chemicals, samples, or glassware is considered both trash and a safety hazard, and will be disposed of.
    8. Acid and base waste goes down the drain, with LOTS of DI water
      1. Let any heated solutions cool to about 40 C before pouring down the drain.
      2. Any solutions containing heavy metals need to be removed of separately.
    9. When finished in hood:
      1. Clean up any chemicals on the hood surface
      2. Dispose of wipes
      3. Reset the daily use bottles.
      4. Store any chemical bottles under the hood or in the cabinet.
      5. Sign out.

Current Procedures and Resources

General Safety Overview

Lab Courtesy

Laboratory Fume Hood Training Summary.doc

BNC Code of Conduct

Operating Policy and Procedures (2012)

REM Chemical Hygiene Plan

BNC 150 Slides

BNC 202 Slides

BNC 206 Slides

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