What accommodation might be provided to students with chemical sensitivities in science labs?

DO-IT Factsheet #304
http://www.washington.edu/doit/Faculty/articles?304

Some students have sensitivities to chemicals used in science labs. These sensitivities can range from allergies to one or two specific chemicals to a generalized condition such as Multiple Chemical Sensitivity.

A student with chemical sensitivities and their instructor can brainstorm alternatives that allow the student to participate as fully as possible in lab activities. Possible solutions include the following:

When these accommodations are not sufficient to allow a student to participate, other flexible learning arrangements may need to be considered. For example, labs could be videotaped or students could complete computer-based simulations.