Documents Spandex Fiber

(SYNTHETIC FIBER) INTRODUCTION Spandex, invented in 1959, is a light weight, elastomeric, synthetic fiber in which the fiber forming substance is a long chain synthetic polymer…

Environment Causes of zone depletions

1. Causes of Zone Depletions: Manufactured compounds are also capable of altering atmospheric ozone levels. Chlorine, released from CFCs, (15k JPG) and bromine (Br), released…

Documents Objective In this lesson we will answer the following questions: What disinfection requirements must...

Slide 1 Objective In this lesson we will answer the following questions: What disinfection requirements must be met in treating drinking water? How does chlorination fit…