United States
Protect Your People

Industry Standards

Protection You Can Count On!

When the Environmental Protection Agency (EPA) designated the Occupational Health and Safety Administration (OSHA) to be responsible for the health and safety of workers in and around areas of hazardous materials and contaminated waste, OSHA responded by formulating an all encompassing compendium of safety regulations that prescribe operating standards for all aspects of OSHA projects. Almost 2 million people are affected by the OSHA Standard today.

In 1990, additional standards proposed and developed by the National Fire Protection Association (NFPA) and the American Society for Testing and Materials (ASTM) were accepted by OSHA.

NFPA Standard 1991 set performance requirements for totally encapsulated vapor tight chemical suits and includes rigid chemical and flame resistance tests and a permeation test against 21 challenge chemicals.

The basic OSHA Standard calls for 4 levels of protection, A through D, and specifies in detail the equipment and clothing required to adequately protect the wearer at corresponding danger levels.


Level A

Level A protection is required when the greatest potential for exposure to hazards exists, and when the greatest level of skin, respiratory, and eye protection is required.

Level A requires total encapsulation in a vapor tight chemical suit with positive pressure, full face-piece apparatus (SCBA) or positive pressure supplied air with escape SCBA and appropriate accessories. Lakeland Level A chemical protective clothing can also be manufactured to meet NFPA 1991 specifications.  

Level B

Level B situations call for the highest degree of respiratory protection, but a lesser need for skin protection. 

Level B protection calls for SCBA or positive pressure supplied air respirator with escape SCBA, plus hooded chemical resistant clothing (overalls and long sleeved jacket; coveralls; one or two piece chemical-splash suit; or disposable chemical-resistant coveralls).

Level C

Level C protection is required when the concentration and type of airborne substances is known, and the criteria for using air purifying respirators is met.

Typical Level C equipment includes full-face air purifying respirators, inner and outer chemical-resistant gloves, hard hat, escape mask, and disposable chemical-resistant outer boots.

Level D

Level D protection is the minimum protection required. Level D protection may be sufficient when no contaminants are present or work operations preclude splashes, immersion, or the potential for unexpected inhalation or contact with hazardous levels of chemicals.

Appropriate Level D protective equipment may include gloves, coveralls, safety glasses, face shield and chemical-resistant, steel-toe boots or shoes.