There are many resources for purchasing or creating technology and materials that make science labs accessible to students with a variety of disabilities. Conducting a web search will locate some of them, but the following websites provide a good place to start:
- American Printing House for the Blind, Inc. 
Products for students with visual impairments including math textbooks, tactile graphics kit, rulers, and graph sheets.
- Ann Morris Enterprises, Inc. 
Talking and Braille products.
- Barrier Free Education, Developing Accessible Science Experiments 
Accessible science projects and equipment.
- EASI (Equal Access to Software and Information) Science and Math Resources 
Teaching strategies, hardware and software solutions to help individuals with disabilities gain access to science, engineering, and mathematics.
- Freedom Scientific 
Technology resources for students who are blind, or who have low vision or learning disabilities.
- Independent Living Aids, Inc. 
Talking, large display, and other adapted products for individuals who are visually impaired.
- Maxi Aids & Appliances for Independent Living 
Talking, large display and other adaptive products.
- Science Access Project 
A project to enhance the ability of people with print disabilities to read, write, and manipulate information. Their focus is on math equations and information normally presented in tables, graphs, diagrams, and figures.
For information on teaching strategies that promote the full inclusion of students with disabilities in science, consult the publications The Winning Equation: Access + Attitude = Success in Math and Science  and Working Together: Science Teachers and Students with Disabilities . You may also view the videos  by the same titles.
-  American Printing House for the Blind, Inc.
-  Ann Morris Enterprises, Inc.
-  Barrier Free Education, Developing Accessible Science Experiments
-  EASI (Equal Access to Software and Information) Science and Math Resources
-  Freedom Scientific
-  Independent Living Aids, Inc.
-  Maxi Aids & Appliances for Independent Living
-  Science Access Project
-  The Winning Equation: Access + Attitude = Success in Math and Science
-  Working Together: Science Teachers and Students with Disabilities
-  videos