Gloves work place

Small Quantities. Wear eye protection, laboratory coat, and butyl rubber gloves. Work in the fume hood. Prepare a dilute aqueous (5%) solution of phenylhydrazine (phenylhydrazine-HCl add 3 mL of 10% NaOH for each 1 g of the hydrochloride) by adding slowly to the appropriate volume of water. For each 1 g of phenylhydrazine or phenylhydrazine-HCl, place 18 mL (about 25% excess) of commercial laundry bleach (containing about 5.25% sodium hypochlorite) into a three-necked, round-bottom flask equipped with a stirrer, thermometer, and dropping funnel. Add the aqueous phenylhydrazine to the stirred hypochlorite solution, monitoring the rate of addition by rise in temperature. The temperature is maintained at 45-50°C, and addition takes about 1 hour. Stirring is continued for 2 hours until the temperature gradually falls to room temperature. The cooled reaction mixture can be flushed down the drain with at least 50 times its volume of water.6... 

Small Quantities. Wear eye protection, laboratory coat, and butyl rubber gloves. Work in the fume hood. Place 7.9 g (0.12 mol) of 85% potassium hydroxide pellets in a 100-... 

Small Quantities. Wear eye protection, laboratory coat, and nitrile rubber gloves. Work in the fume hood. Add 60 mL of 2.5 M sodium hydroxide (prepared by carefully dissolving 6 g of NaOH in 60 mL of cold water) to a 100-mL, three-necked, round-bottom flask equipped with a stirrer and thermometer, placed on a steam bath. The p-toluenesulfonyl chloride (0.05 mol, 9.5 g) is added in small portions. If the reaction is sluggish (no dissolution or rise in temperature), heat the mixture to about 90°C. When the initially added material has dissolved, add the remainder in small portions. After the addition is complete, continue heating until a clear solution is obtained. Cool the mixture to room temperature, neutralize with dilute hydrochloric or sulfuric acid, and then wash into the drain.3... 

Small Quantities. Wear eye protection, laboratory coat, and nitrile rubber gloves. Work in the fume hood. Triphenylphosphine (1.3 g, 0.005 mol) is dissolved in tetrahydrofuran (30 mL). The solution is slowly added while stirring to household bleach (70 mL) or a calcium hypochlorite solution (5.5 g in 20 mL of water). After stirring for 1 hour, the solution is placed in an open container in the fume hood to allow the tetrahydrofuran to evaporate. The aqueous solution is washed into the drain.6... 

OSHA requires employers of workers who are occupationally exposed to 2-butoxyethanol to institute engineering controls and work practices to reduce employee exposure and maintain it at or below pennissible exposure limits (PEL). The PEL for 2-butoxyethanol is 50 ppm (OSHA 1974). Workers exposed to 2-butoxyethanol should wear personal protective equipment such as gloves, coveralls, and goggles to protect exposure to tire skin (OSHA 1974). NIOSH recommends that industrial hygiene surveys be completed at work places where airborne exposure to 2-butoxyethanol or 2-butoxyethanol acetate may occur (NIOSH 1990). If exposure levels are at or above one-half the recommended exposure limit (REL = 5 ppm), NIOSH recommends that a program of personal monitoring be instituted so that tlie exposure of each worker can be estimated. If exposure levels are at or greater than the REL, or if there is a potential for skin contact, NIOSH recommends that 2-butoxyacetic acid be measured in the urine of the workers. 

Notes (1) You should work as part of a team of two to four analysts to discover the properties in Part A, but work on your own to analyze the unknowns in Part B. (2) Whenever you are directed to shake a test tube, wear latex gloves and place your finger over the mouth of the tube and then shake the tube. Before proceeding to the next test tube, rinse your latex-covered finger with distilled water to avoid cross-contamination. (3) See the Suggested format for lab notebook at the end of the procedure. (4) Use distilled water whenever the procedure calls for water. Reminder Safety glasses are required and latex gloves should be worn. 

Mellstrom GA, Boman AS (1997) Protective gloves test results compiled in a database. In Brune D, Gerhardsson G, Crockford GW, DAuria D (eds) The work place, vol 1. Fundamentals of health, safety and welfare. International Occupational Safety and Health Information Centre (CIS), International Labour Office, Geneva and Scandinavian Science Publisher, Oslo, pp 716-730 Mellstrom G, Lindberg M, Boman A (1992) Permeation and destructive effect of disinfectants on protective gloves. Contact Dermatitis 26 163-170... 

Place a small piece of nonabsorbent paper (the paper separating the nitrocellulose sheets works well) over the section to protect the membrane from fingerprints. In some instances, latex gloves maybe required. When printing a thin section (200-300 pm), placing a piece of membrane on top of the section instead of the nonabsorbent paper frequently gives better results. 

Droplet Precautions Standard Precautions plus Place the patient in a private room or with someone with the same infection if possible. Use gloves when entering the room. If not feasible, maintain at least three feet of space between patients. Use a mask when working within three feet of the patient. Limit movement and transport of the patient, and use a mask on the patient if they need to be moved. 

SACHEM Inc., located in Cleburne, Texas, is a producer of high-purity bulk chemicals for companies that have high-purity requirements in their chemical processing. Because the products are of high purity, laboratory operations to assure the quality of the products (quality assurance operations) involve the determination of trace levels of contaminants. Contamination of laboratory samples and materials is of special concern in cases like this because an uncommonly small amount of contaminant can adversely affect the results. The laboratory work therefore takes place in a special environment called a clean room. A clean room is a space in which extraordinary precautions are taken to avoid the slightest contamination. Laboratory personnel wear special clean room suits, nets to cover hair, mustaches, and beards, and special shoes, gloves, and safety glasses to minimize possible contamination. 

CAUTION Use gloves when working with NaOH. Measure about 4 g NaOH and place it in a 150-mL beaker. Add 50 mL distilled water to the NaOH. Mix with a stirring rod until the NaOH dissolves. 

A. Transfer Into a Glove Bag. It is cumbersome to transfer large items into a glove bag once work is underway. Therefore all of the items to be used should be placed into the bag, which is then fully deflated and sealed by rolling and clamping the inlet flap. Inert gas may then be introduced and the bag may be flushed through an exit tube and bubbler, or opened slightly, collapsed, and inflated several times to expel air. 

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