Do you know the type of glove that is most resistant to the chemical you are using? The ability of the chemical to pass through PPE should be known along with puncture, tear and abrasion resistance. Laboratory supervisors should base the selection of appropriate hand protection by evaluating the potential risks with the tasks performed. However, personal protective equipment should not be used as a substitute for engineering, work practice, or administrative controls.
There are currently no gloves available that protect against all chemicals. The best way to guard against possible expose is to remove and discard gloves as soon as they become contaminated.
Before using any glove, inspect them for discoloration or punctures. This may be done by inflating rubber or plastic gloves with air. Before leaving the work site, always remove gloves to prevent contamination of door knobs, light switches, etc.
Do not wear your protective gloves outside of the laboratory; the folks you meet in the hallway don't know if your gloves are clean, even if you know they are. See the One Glove Rule for more information on this.