Broken glassware

Bohr, like all the other individuals mentioned in this chapter, was not a chemist. His only real contact with chemistry came as an undergraduate at the University of Copenhagen. His chemistry teacher, Niels Bjerrum, who later became his close friend and sailing companion, recalled that Bohr set a record for broken glassware that lasted half a century. 

Broken glassware can easily puncture or slice skin. 

Otherwise, the robot moves from one point to another without avoiding the obstacle which can then result in broken glassware and wounded pride. The robot therefore must be programmed to avoid the obstacle. 

All broken glassware and dirty paper towels must also be segregated for separate disposal. See the instructor or supervisor for the procedure to follow. 

Two types of containers should be available for disposal purposes. One should be labeled Liquid Radioactive Waste and used for all waste solutions the other, Solid Radioactive Waste, for blotter paper, broken glassware, etc. Liquid wastes must not be poured down any drain, nor solid wastes deposited in normal trash cans. 

Contaminated glassware should be kept separated from uncontaminated. Contaminated beakers and flasks are placed in the special sink or other container for washing. Clean and wash all equipment with soap and water immediately after the experiment has been completed. If water-insoluble materials are being used, the first washing should be done with an organic solvent such as acetone. Soak contaminated pipets in a container filled with water. All broken glassware is disposed of in the Solid Radioactive Waste container. 

Don t use chipped or cracked glassware and examine the equipment for star cracks - it may break under very slight strains and should be disposed of in the broken glassware bin. All laboratories will have a waste bin dedicated to broken glass. Never put broken glass into other bins. 

Many items of laboratory glassware can be made and repaired when reasonable competence has been acquired in the basic operations described in Chapter 6, and flame annealing is properly understood and can be effectively used. Although it is commonly thought that it is easier to repair broken glassware than to remake the item, this is not always true. In many cases repairs can be undertaken only by those who are capable of making the items in question. 

Dispose of glass pipettes and any broken glassware using only the designated sharps bins. 

A dust pan and brush should be used for cleaning up broken glass. Leather gloves must be worn when picking up any broken glassware. 

Broken, chipped, or cracked glassware should never be used or returned to storage (Figure 1.18). If broken beyond repair, discard in trash receptacle designated for broken glassware. 

The used capillary tubes can be discarded in the trash receptacle designated for broken glassware. 

Fires, explosions, burns, poisoning, electrical shock, bacteriological contamination, chemical burns, and broken glassware. Produced by Layton International. 

All types of broken glasswares exclusively should be thrown into a covered metallic bin. A lot of inflammable materials, for instance paper, empty cartons, soiled tissue-papers, cloth pieces that may have been used to clean up inflammable liquids, used pieces of sponge, urethane-foam used as packing materials, used filter papers, empty card-board boxes, discarded rubber-tubings, plastic bags, cotton etc., must be stored into a separate bin. 

Broken glassware may have sharp edges. Be careful when using scissors. Use caution and proper protection when handling hot objects. 

Broken glassware must not be handled directly by hand, but must be removed by mechanical means such as a brush and dustpan, tongs, or forceps. Containers of contaminatedneedles,sharp equipment,andbrokenglassare to be decontaminated before disposal, according to any local, state, or federal regulations. 

When disposing of chemicals in the normal trash, certain precautions should be observed. Because custodians, who usually empty the trash contamCTs, are not usually familiar with laboratory operations, no objects that could cause harm to them should be disposed of in those containers. Such objects include containers of chemicals, unless they are overpacked to avoid breakage, and powders, unless they are in closed containCTs. Free-flowing liquids are usually prohibited. Sharp metal and broken glassware, even though they may be considered nonhazardous trash, should be collected in specially marked containers, never in the normal trash baskets. 

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