Guide to the safe handling of solvents in a bituminous ... - Aapaq.org

selecting and purchasing equipment with safety features thatminimise leaking; selecting and purchasing mixing apparatus with non-sparkingmotors; checking integrity of gaskets, caps and bottles before using.Discard damaged items; allowing aerosols to settle for at least one minute before openingcontainers; when using a sonicator, immersing the tip deeply enough into thesolution to avoid creation of aerosols; decontaminating exposed surfaces after use.• Ovens and hot plates: Laboratory ovens are useful for baking orcuring material, off-gassing, dehydrating samples and dryingglassware. However, care should be taken to: Select and purchase an oven whose design prevents contactbetween flammable vapours and heating elements orspark-producing components; Discontinue use of any oven whose backup thermostat, pilot lightor temperature controller has failed; Avoid heating toxic materials in an oven unless it is ventedoutdoors (via a canopy hood, for example); Never use laboratory ovens for preparation of food for humanconsumption; Glassware that has been rinsed with an organic solvent should berinsed with distilled water before it is placed in a drying oven.• Analytical equipment: The following instructions for safe use ofanalytical equipment are general guidelines; consult the users'manual for more detailed information on the specific hazards: Ensure that installation, modification and repairs of analyticalequipment are carried out by authorised service personnel; Read and understand the manufacturer’s instructions before usingthis equipment; Make sure that preventive maintenance procedures are performedas required; Do not attempt to defeat safety interlocks; Wear safety glasses and laboratory coats (and other appropriatePPE as specified) for all procedures.68