WALKER BARRIER SYSTEMS

Prefabricated buildings made substantially of metal for the storage of hazardous materials; metal storage drums; all of the foregoing expressly excluding metal silos and stationary tanks, namely, metal storage tanks

Scientific apparatus and instruments, namely, weighing, measuring and sampling equipment; glove boxes in the nature of rigid enclosures incorporating gloves for protection against chemicals, radiation, accident, or injury while handling hazardous materials; laboratory isolators in the nature of rigid enclosures incorporating gloves for protection against chemicals, radiation, accident, or injury while handling hazardous materials; isolators, namely, containment enclosures, affording operator protection, through use of negative pressure environments; barrier isolators, namely, aseptic enclosures affording product and operator protection through use of positive and negative pressure environments; furniture especially made for laboratories; down flow booths for laboratory use; laminar flow booths for laboratory use; glove bags in the nature of portable, flexible enclosures incorporating gloves for protection against chemicals, radiation, accident, or injury while handling hazardous materials; all of the aforesaid goods excluding magnetic and electromagnetic coils

Clean room installations for the manipulation and handling of pharmaceuticals, chemicals, and hazardous materials; air filtering installations in the nature of down flow booths for industrial use; air filtering installations in the nature of laminar flow booths for industrial use

Non-metallic transportable buildings; prefabricated non-metallic buildings for the storage and containment of hazardous materials; prefabricated non-metal laboratory buildings

Plastic storage drums

Plastic containment bags for storing hazardous materials

Installation and repair of clean rooms for the manipulation and handling of pharmaceuticals, chemicals, and hazardous materials; installation and repair of down flow booths for laboratory use; installation and repair of laminar flow booths for laboratory use; installation and repair of glove boxes in the nature of rigid enclosures incorporating gloves for protection against chemicals, radiation, accident, or injury while handling hazardous materials; installation and repair of laboratory isolators in the nature of rigid enclosures incorporating gloves for protection against chemicals, radiation, accident, or injury while handling hazardous materials; installation and repair of air filtering installations in the nature of down flow booths for industrial use; installation and repair of air filtering installations in the nature of laminar flow booths for industrial use

Validating services, namely, testing, inspection, evaluation, and verification services of buildings, prefabricated buildings, and laboratory buildings; validating services, namely, testing, inspection, evaluation, and verification services of clean rooms for the manipulation and handling of pharmaceuticals, chemicals, and hazardous materials; validating services, namely, testing, inspection, evaluation, and verification services of down flow booths for laboratory use; validating services, namely, testing, inspection, evaluation, and verification services of laminar flow booths for laboratory use; validating services, namely, testing, inspection, evaluation, and verification services of glove boxes in the nature of rigid enclosures incorporating gloves for protection against chemicals, radiation, accident, or injury while handling hazardous materials; validating services, namely, testing, inspection, evaluation, and verification services of laboratory isolators in the nature of rigid enclosures incorporating gloves for protection against chemicals, radiation, accident, or injury while handling hazardous materials; validating services, namely, testing, inspection, evaluation, and verification services of air filtering installations in the nature of down flow booths for industrial use; validating services, namely, testing, inspection, evaluation, and verification services of air filtering installations in the nature of laminar flow booths for industrial use