Container labelling for

The toxicity of all the chemicals you will be working with must be known. Consult the instructor, material safety data sheets (MSDSs), safety charts, and container labels for safety information about specific chemicals. Recently, many common organic chemicals, such as benzene, carbon tetrachloride, and chloroform, have been deemed unsafe. 

In terms of test substances, reagents, and samples, the QAU would want to look in the notebooks or logbooks to see if these substances are properly identified. It would also want to look at the container labels for proper identification (identity, concentration, composition, storage requirements, and expiration date). It would want to take note of expiration dates to see if all test substances and reagents are current. It would look for proper storage of substances, chain-of-custody documentation (date, quantity, distributor, receiver, etc.), and sample labels to see if they are adequate to avoid mixups. 

Wear a dust mask, goggles, rubber gloves, and protective clothing. Carefully scoop the solid into a beaker and transport to the fume hood. Destroy the material using waste disposal procedure. Wash the site of the spill with soap and water, disposing of the cleaning materials in a sealed bag or container labeled for disposal by burning.4... 

Package Lots. Place the compound in a separate container labeled for disposal by burning. Burn in an incinerator equipped with afterburner and scrubber.7... 

Place in separate container labeled for reuse or recycling3 or package for disposal in accordance with local regulations.7... 

Shut off all possible sources of ignition. Instruct others to keep a safe distance. Wear breathing apparatus, eye protection, laboratory coat, and PVA or silver-shield rubber gloves.21 Cover spill with a 1 1 1 mixture by weight of sodium carbonate or calcium carbonate, clay cat litter (bentonite), and sand. Transfer to an appropriate container labeled for disposal by burning. Ventilate site of spillage well to evaporate remaining liquid and dispel vapor.19 22... 

Package Lots. Place in a separate container labeled for disposal by burning. 

Although the same principles apply to smaller laboratories with simpler or fewer wastes, such laboratories may be able to work with simpler rules and requirements. For example, in a teaching laboratory where students are performing a specific experiment, it should suffice to collect the wastes in containers labeled for each waste and to record the total quantity and date. A similar system can be used in which specific waste solvents are accumulated for recovery. If the wastes are to be placed in a lab pack for landfill disposal or an analogous fiber pack for incineration, the accumulation record should include the information that is on the individual waste containers. 

Never dispose of organic tars, Kimwipes, paper with organic residue, or other solid material down a sink. Such materials should be placed in a waste container labeled for laboratory wastes. Never dispose of used cleaning solutions of any type down a sink without first checking with the safety officer. Different environmental laws exist in each state and sometimes within separate counties, so it is difficult to generalize about waste disposal too broadly. 

First, click on the outer border of the chart to select the Chart Area. All data series in the chart will be indicated on the worksheet by means of color-coded ranges purple for x values, blue for y values, as shown in Figure 5-9. (If you selected cells containing labels for the columns, they will be color-coded green.)... 

Now that we have defined this function, how do we use it Just like any other function, such as SIN or LOG. For the sake of this example, let us assume that the calculation of a on the spreadsheet is performed in column E, starting with cell E14. Furthermore we will assume that rows 1 through 8 have been reserved for graphs, that cells A10, CIO, and E10 contain labels for o. k, and A t respectively, andthatBlO, D10 and F10 contain the corresponding numerical values. Finally, let row 12 contain the column headings cell E12 the label for w, and cell F12 its value. 

Dispose of all development solvent in the container for nonhalogenated organic solvents. Dispose of the ethanol-methylene chloride mixture in the container for halogenated organic solvents. The micropipettes used for spotting the solution should be placed in a special container labeled for that purpose. The TLC plates should be stapled in your lab notebook. 

You must dispose of methylene chloride in a waste container marked for the disposal of halogenated organic waste. Dispose of the tea bag in a trash can. The aqueous solutions obtained after the extraction steps must be disposed of in a waste container labeled for aqueous waste. 

Transfer precipitated silver halides to a container labeled for them so that the silver can be recovered. Put the precipitated lead sulfide in a container for heavy metals. Any FAQS that remains may be flushed down the drain, as can the solution from the test for nitrogen. 

Ensure that all containers of hazardous substances in the workplace are labeled, tagged, or marked and include the identity of the hazardous chemical, and the appropriate hazard warnings. Container labels for purchased chemicals must also include the name and address of the chemical manufacturer, importer, or other responsible party. 

---