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Gloves

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Protect yourself from nasties.
Protect your experiment from contamination.
One glove rule going between buildings.

 

see: glove_chart.pdf

Two reasons for using gloves:

1) To protect yourself from bad stuff.

2) To protect your experiment from bad stuff.

 

Michael Jackson with one gloveIn both cases using gloves outside your lab will compromise these goals.
Contaminating either your gloves or door knobs, telephones, etc. will hurt you, others or your experiment.
Instead, show you care and use one gloved hand to carry materials and one ungloved hand to open doors, etc.

Using the correct glove can be critically important.

 

 

Dartmouth Accused of Laxness in a Death

HANOVER, N.H., August 18, 97 (AP)
-- A Federal agency said today that Dartmouth College has violated safety laws in the death of a researcher who spilled a highly toxic mercury compound on her protective glove.
--The Occupational Safety and Health Administration proposed a fine of $13,500 in the death of Professor Karen Wetterhahn, 48, who spilled drops of the compound dimethyl mercury, which penetrated her latex glove during an experiment in August 1996.
Professor Wetterhahn died from the exposure in June 1997.
--Federal investigators said the rare chemical attacked the central nervous system.
--The case "emphasizes the responsibility of all employers under the law to take every feasible precaution to ensure the safety and health of their employees," said David May, the agency's director for New Hampshire. Darthmouth did not provide enough safety training or appropriate gloves, the agency said. Dartmouth officials said they would redouble safety efforts.
Chemical properties of the glove are but one of the criteria. Temperature, wear resistance, sharp object protection, availability are others.

 

NEVER place ANY HAZARDOUS material
in the trash or down the drain.

EVER!

This includes contaminated gloves, paper towels, etc.

 

GLOVES DO NOT PROTECT YOUR EYES, USE SAFETY GLASSES TOO!

Often it is necessary to double up with two types of gloves. For instance: hot organic solvents may require a chemically resistant pair be worn under a thermal resistant pair.

Here is a short guide found at EH&S of Stanford:

PROTECTIVE GLOVE PROPERTIES CHART

POLYMER

GLOVE TYPE

ADVANTAGES

DISADVANTAGES

USE AGAINST THESE CHEMICALS

Natural Rubber

(latex)

Generally unsupported

Low cost; good, physical. properties; dexterity.

Poor for oils, greases, organics. Frequently imported; may be poor quality.

Bases, alcohols, dilute water solutions; fair for aldehydes, ketones.

Natural Rubber blends

Generally unsupported

Low cost; dexterity, better chemical resistance than natural rubber for some chemicals.

Physical properties frequently inferior to natural rubber.

Same as natural rubber

PVC

(vinyl)

Generally supported

Low cost; very good physical properties, especially abrasion- resistance.

Plasticizers can be stripped; frequently imported; may be poor quality.

Strong acids and bases; salts, other water solutions; alcohols.

Neoprene

Supported or unsupported

Medium glove; medium physicals, medium cost, medium chemical resistance.

 

Oxidizing acids; aniline, phenol; glycol ethers.

Nitrile

Generally unsupported

Low cost; excellent physical properties; dexterity.

Poor for benzene, methylene chloride, trichloro- ethylene, many ketones.

Oils, greases; aliphatic chemicals; xylene; perchlor; trichloroethane; fair for toluene.

Butyl

Unsupported

Specialty glove; polar organics.

Expensive; poor for hydro- carbons, chlorinated solvents.

Glycol ethers, ketones, esters.

PVA

Supported

Specialty glove, resists a very broad range of organics; good physicals.

Very expensive; water sensitive; poor for light alcohols.

Aliphatics, aromatics; chlorinated solvents; ketones (except acetone); esters, ethers.

Fluoro- elastomer
(Vitron

Unsupported Specialty glove; organic solvents. Extremely expensive; poor alcohols. physicals;poor for some ketones, esters, amines.

Aromatics; chlorinated solvents; also aliphatics and alcohols

(phenol-chloroform)

NOTE: ONLY Vitron gloves are safe for phenol-chloroform. There are none at station, but lots of phenol-chloroform. hmm...

Glove Size Conversion

6-7 = XS (extra small)
7-8 = S
8-9 = M
9-10 = L
11 = XL