UNIVERSITY OF THE
BIOLOGY STUDENTS AND THE DSM LABORATORY
DSM BIOLOGY LAB
DSM BIOLOGY
LAB 
Laboratories are conducted to enhance further understanding of biology
concepts. The following information will prove helpful to you as a student.
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Safety will be emphasized in all courses and you are to become familiar with all safety rules. Carefully read the section on laboratory safety in your lab manual and be aware of the various precautions to be taken while working in a laboratory.
Students are not allowed to work in the laboratory alone or without the permission of the instructor.
Safety Goggles must be worn at all times in the lab. Prescription glasses, sunglasses, etc. are not allowed as your only protection. It is recommended that contact lenses not be worn in the labs because laboratory fumes may cause eye irritation.
Do not change a laboratory procedure without specific permission from the instructor.
Wear sensible clothing. Old clothes are best because many substances will cause holes to form in fabrics. Long pants and shoes must be worn because chemicals can cause irritation on contact with skin. Shorts and sandals are not permitted.
Smoking, eating, or drinking is not permitted in the lab.
Do not pipette liquids with mouth; use pipette bulbs.
Lachrymators (materials that cause secretion and discharge of tears) are to be kept in the hood at all times.
Do not attempt to force a glass tube or thermometer into a rubber stopper. The tube or thermometer should be lightly moistened with stopcock grease or glycerin and carefully inserted into the stopper. Do not lubricate with water because the water will evaporate and make it difficult to remove the tube later.
While connecting a rubber or Tygon hose to the outlet of a condenser, moisten the glass with water, gently insert the tube, and use rotating motion to connect the tube. This will prevent breakage of condenser arms and possible injury from it.
Disposal of excess or unwanted materials:
Notify your Instructor immediately.
Know the location and use of fire extinguishers, eye-washers, and safety showers in the lab.
Do not attempt to smother a fire in a beaker or flask with a fire extinguisher. The force of the stream of material from it will turn over the vessel and result in a bigger fire. Just place a watch glass or a wet towel over the container to cut off the supply of oxygen.
If your clothing is on fire, do not run because this only increases the burning. It is normally best to fall on the floor and roll over to smother the fire. If a fellow student, whose clothing is on fire panics and begins to run, attempt to get the student on the floor and roll over to smother the flame. If necessary, use the fire blanket or safety shower in the lab to smother the fire.
Students with long hair should put their hair in a bun or a pony-tail to avoid their hair catching fire.
For treatment of minor heat or flame burns, run cold water and apply burn ointment. More serious burns should be referred to the infirmary or physician immediately.
If you get chemicals in your eyes (in spite of the protective goggles), flush them with copious amounts of cold water. Get help from the Instructor if necessary.
Chemical spills on hands or arms should be washed immediately with soap and water. Washing hands should become an instinctive response to any chemical spilled on hands. Spills that cover clothing and other parts of the body should be drenched under the safety shower. If strong acids or bases are spilled on clothing, the clothing should be removed.
Read the label of the reagent bottle carefully before using. (A good example is the student who used "fuming" sulfuric acid instead of concentrated sulfuric acid. His experiment was exciting but no product was obtained).
Never return unused reagent to the reagent bottle.
Never take a reagent bottle to your bench.
Replace caps on reagent bottles after use.
Do not pipette anything with your mouth. Always use pipettes with rubber bulbs.
Most organic liquids are quite flammable and should be handled as you might handle gasoline. Never pour or transfer organic liquids near an open flame.
Always be aware of the toxicity of substances while preparing for your laboratory. Handle all chemicals with care.
Material Safety Data Sheets (MSDS) for the commonly used chemicals are provided in the lab (room S205). These contain a wealth of information regarding the chemicals and must be consulted prior to using a chemical in the lab. The Merck Index also provides information on the toxicity and physiological effects of commonly used chemicals. This publication is available in the UVI library and a copy is available in the chemistry stockroom (room S201).
Mineral acids, especially perchloric acid, nitric acid and sulfuric acid react violently with organic compounds, such as acetone and Alcohols. Therefore, care must be taken when these are employed in experiments. Reaction vessels, washed with organic solvents like acetone must be dried thoroughly before introducing concentrated acids.
Always add acid to water.
Avoid breathing chemical vapors.
Clean skin promptly should contact occur with skin.
Do not remove the copy of the laboratory rule that is located in the Biology laboratory drawers/lockers at all times. If one is not present, inform the laboratory manager or your professor immediately. (note: Rules are also posted in the laboratory.)
Never enter storerooms S-111 or S-201 unless directed by the laboratory manager or a DSM faculty member to do so.
Always sign-out and sign-in any materials or equipment removed from rooms S-111 or S-201. Use borrowing card, which is located in room S20, to submit requests for equipment and materials.
Pay for all items lost or damaged during the semester unless excused by the laboratory manager or a DSM faculty member not to do so.
Always clean work area at the beginning and end of each laboratory session. This includes countertops, floors, etc. (Use a 10 % Bleach Solution or the equivalent for wiping countertops; A list of alternative disinfectants posted)
Always clean glassware and other equipment used at the end of each lab period. This includes test tubes, beakers, etc.
At the completion of laboratory procedures utilizing Tissue Embedding Medium, use a razor to remove solidified medium from laboratory countertops and other areas where spills have occurred.
Never pour Tissue Embedding Medium down the drain. It will cause a blockage.
Always dispose of regular and contaminated trash in the appropriate receptacle. If in doubt, consult the laboratory manager or a DSM faculty member.
At the completion of laboratory dissections, place animal(s), insect(s), etc. into plastic bags and seal bags with twist-ties for subsequent removal by university housekeeping staff.
Always place all materials requiring sterilization (via autoclave) in the area designated for contaminated materials. If in doubt, consult the laboratory manager or a DSM faculty member.
Never use Autoclave (Market Forge Sterilomatic) unless directed by the lab supervisor or a Department of Science and Math faculty member to do so. (Potential Burn Hazard)
Dispose of used pipettes in a 10% bleach solution or the equivalent. (Disinfectant only for use with Biohazard Materials; Other used pipettes, please wash and return to the designated area)
Always be present 5 minutes before and after scheduled lab sessions for pre- and post- laboratory inspections. Corrective actions must be taken immediately when deviations are pointed out by the inspector.
Always label all materials left in incubators, water baths, or ovens. Label should include student name, course #, date item was placed in area, and date item is to be removed from area. Consult Lab manager or your professor for the appropriate label.
Notify the lab supervisor or instructor when supplies in the lab drawer/locker are diminishing.
Note the location of these items in the Dept. of Science and Math (DSM) laboratory and building:
Always observe and practice Department of Science and Math Laboratory Safety Protocol. (Protocol posted and in lab drawers/lockers)
Never eat, drink, chew gum, or smoke in the Department of Science and Math Laboratories.
Never use laboratory glassware to store or heat food for consumption.
Never pipet anything by mouth.
Wear safety goggles in the DSM Laboratories at all times.
Never play around in any DSM laboratory.
Never block exits, aisles, or hallways.
Always wear appropriate lab clothing. This includes long pants or skirts, long sleeves, and closed-in shoes (no sandals and no bare feet). Additionally, lab coats must be worn when in DSM Laboratories.
Never leave an experiment unattended unless you have permission to do so.
Report all injuries at once to the laboratory manager or a DSM faculty member.
Always refer to the Department of Science and Math Laboratory Safety Guidelines before commencing laboratory experiments and as needed.
Carefully read all the laboratory rules, which are summarized above, and recognize that it is your responsibility to observe (practice) them throughout the regular semester and whenever utilizing DSM laboratory facilities. Failure to adhere to the following rules will result in disciplinary action.
Classroom Administration
Building, 3rd Floor, Room CA-317
St. Thomas, VI 00802
Phone: (340) 693-1230
Fax: (340) 693-1245
Main Office, STX campus
Phone: (340) 692-4157
Fax: (340) 692-4115
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· UC Davis Physical Sciences and Engineering Library
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· Go to DSM Chemical Related Information
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2006
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