Good Laboratory Practices

• Good Laboratory Practices is a set of guidelines and rules that serve to minimize the risks or harms resulting from hazards in the laboratory.
• The GLP of UPCP is provided in A Handbook of Good Laboratory Practices for Faculty, Students, Researchers, and Laboratory Personnel.
• Hazard refers to the potential source of danger or harm.
• GHS stands for Globally Harmonized System.
• The Globally Harmonized System of Classification and Labeling of Chemicals is an internationally recognized system for hazard classification and communication.
• Personal Protective Equipment is a gear or clothing used to protect the wearer from specific hazards and hazardous materials.
• When handling or using concentrated acids, use industrial gloves.
• Carbon Filter Masks are used when performing experiments that deal with organic solvents, corrosives, toxic compounds, and fuming acids.
• Make a schematic diagram for more efficient work.
• Bromine liquid, sodium metal, potassium metal, and phosphorus should be isolated and stored separately from one another.
• Do not store oxidizing chemicals with reducing chemicals or organic materials.
• Flammable reagents are never handled when there are open flames nearby.
• Corrosive agents should be handled with industrial gloves.
• Toxic and cancer suspect agents must be handled under the fume hood.
• Solutions of cyanides must not come into contact with water.
• Carry large bottles of chemicals by supporting the neck and the bottom of the container.
• MSDS stands for Material Safety Data Sheet.
• For spilled acids, neutralize first with sodium bicarbonate or sodium carbonate prior to cleaning.
• For spilled bases, neutralize first with sodium bisulfate.
• Neutral solvents can be absorbed with sand or paper towels.
• Do not use a fire extinguisher in case of a solvent fire.
• If a solvent fire occurs in an open space, pour sand on it.
• Do not discard concentrated acids directly into the sink.
• Solutions of alkalis must not be stored in glass containers.
• Light-sensitive solutions must be stored in amber-colored bottles.
• Solution of ferrous salts must be kept acidic to prevent air oxidation of ferrous ions to ferric state.
• Glassware should be rinsed 3 times in water.
• Balance is an instrument used to determine relative weights of substances.
• Analytical balance can measure very small amounts and is used to determine the accuracy and precision of the substance being weighed.
• Pan is where you put the compound.
• Level indicator or Spirit level indicates if the balance is being leveled.
• Display panel is the screen where the values appear.
• Tare button resets the balance's display to zero.
• Paper tares are used to contain plant materials, and may be used for chemicals that are not hygroscopic, deliquescent, or efflorescent.
• Hygroscopic absorbs moisture then becomes wet.
• Deliquescent absorbs moisture then dissolves in it.
• Efflorescent releases moisture.
• The exact determination of a definite volume of a liquid is referred to as measuring.
• Volumetric apparatus is used to attain a degree of precision required in analytical procedures such as pharmacopeial assays involving volumetric measurements, especially procedures directing a quantity to be accurately measured.
• The surface of a liquid in narrow tubes is always curved because of capillarity.