(2-2) Wastes to Be Disposed of
2-2-1) The following is a list of materials that need special handling.
a. Hazardous Materials:
Hazardous Materials are defined by the University of Tokyo Safety Committee (refer to "Guidelines for Environment and Safety"). This category also includes the bottles, glass tools and rinsing fluid that came into contact with hazardous materials. Put these into prescribed tanks and submit them to The Environmental Science Center (Every Wednesday from 9:40 am at the back of building 2) .
b. Used Fluorescent Light Tubes and Dry Batteries:
Pack them as prescribed, submit to the Environmental Science Center through the office of the Faculty of Agriculture (about twice annually).
c. Quasi-infectious Wastes:
Quasi-infectious Wastes are defined as wastes which are difficult to distinguish from those used in medical activities. Within this category, injectors (both plastic and glass injectors, including needles), medical gloves and its likes made of natural rubber (latex) or polyvinylchloride, gauze and paper towels with blood stains should be put into special cardboard boxes for medical waste and submitted to the Faculty of Agriculture's Supplies Section (every Thursday morning).
d. Plastic Products Subject to Recycling as Blast Furnace Raw Material (Plastic Materials Appointed for Experiments) :
Hydrocarbon plastic products not containing halogens listed below are recycled as blast furnace raw materials as an activity of the Environmental Science Center.
d-1. Solid plastic materials: Plastic tips for Gilson's Pipetman, Eppendorf's pipette, etc., micro centrifugal tubes (the so called Eppendorf tubes), larger plastic centrifugal tubes, disposable pipette. Sterilize by autoclave, rinse, air-dry, and put into 70 litter clear polyethylene bag before submitting.
d-2. Plasticfilms: Only polyethylene gloves. Put into a 70 litter clear polyethylene bag and submit. Gloves made of latex or polyvinylchloride are not acceptable in this category; medical gloves and its likes are Quasi-infectious Wastes (above), and other non-polyethylene gloves are put into Cart 4.
e. Plastic Petri Dishes:
Sterilize all Petri dishes by autoclave, including ones to be discharged without biological contact. After autoclaving, rinse with running water, shake off excess water, then put into a clear polyethylene bag with the name of your laboratory written clearly, and put into Cart 4. Refer to p.56 of "Environmental Safety Guideline" for treatment instructions.
f. Electrophoretic Gels Stained with Ethidium Bromide:
Prepare a polyethylene bucket especially for discharging electrophoretic (agarose and polyacrylamide) gel. Put the gel after use into a clear polyethylene bag and stock them in the bucket. Submit them to the Environmental Science Center as the L-category, collected every Wednesday morning. Use the same treatment when discharging activated charcoals that have adsorbed ethidium bromide. Refer to the Environmental Safety Guideline, p.90. The bucket may be submitted even if not completely filled.
g. Animal Corpses and Tissues:
Put into a garbage bag recommended by the Metropolitan Government (name of laboratory and the person in charge clearly written with magic marker on the outside), temporarily stock in the freezer for corpses (write down necessary information on the installed record book). Undertakers will come and collect the corpses regularly. Corpses that may be infected with contagious disease must be sterilized before freezing. The freezers are installed in the following locations.
h. Animal Excreta:
Put the excreta together with the wood chips and newspapers used as floor matting into a garbage bag recommended by the Metropolitan Government, and tightly tie the bag. Put into Cart 5 as raw waste. Sterilize by autoclave if necessary before discharging.
2-2-2) Other wastes that are not mentioned above are categorized and collected as follows; [Plastics], [Raw Garbage and Paper Waste], [Metals, Chinas and Glass]. General instructions are written bellow.
a. Plastics:
Paper materials with vinyl coatings belong to this category. From food containers such as lunch boxes and noodle cups separate the food remainders, which are categorized as raw garbage (Cart 5), and rinse the empty containers and put them into Cart 4. Bulky plastic waste goes into Cart 4 as it is, but put the smaller ones into a clear polyethylene bag before throwing in the cart. Plastic materials with incorporated metals go into Cart 6 for metals.
b. Raw Garbage, Paper Trash, Paper Cups:
Food remainders and other raw garbage, paper cups, paper plates, paper soaked with filth, paper cartons such as milk cartons, used tissue papers and carbon papers, heat sensitive papers. Put these into a garbage bag recommended by the Metropolitan Government, then put them into Cart 5. Fallen leaves and mowed grass discharged from environmental maintenance belong to this category.
c. Glass and China Wares:
Put the glass wares used in experiments (beakers, flasks, medium bottles), cups and mugs into clear polyethylene bags, then put them into Cart 6. Glass materials that go into Cart 2 are only chemical bottles made of soft glass, and beverage bottles. Other glass materials including broken glass windowpanes all go into Cart 6.
d. Metal waste (excluding waste refuge of large size):
Put empty cans (except beverage cans, which should be put into the recycling box), and tin cans such as 18 liter cans, aluminum foils, and other metal materials. Put them into clear polyethylene bags, then into Cart 6. Pebbles and small concrete pieces collected during floor sweeping belong to this category. Do not put bulky concrete fragments from construction waste into this cart.
e. If you wish to dispose of any waste refuge of large size, ask the Office for instructions.
f. Rubber waste goes into Cart 6.
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