Since each student's accommodation needs are unique and the student is often most knowledgeable about effective accommodations, be sure to talk with the student about what accommodations he/she might need.
Some specific accommodations that might be useful to a student who is deaf or hard of hearing in a science lab include the following:
- Provide a lab partner.
- Allow extra time for set up and completion of lab work.
- Give preferential seating to avoid physical barriers and assure visual access to the instructor, demonstrations, and captioned videos.
- Provide written instructions prior to lab activities.
- Have visual lab warning signals (such as strobe fire alarms) installed.
This list is from the DO-IT publication Making Science Labs Accessible to Students with Disabilities .
For more examples of accommodations that can be made in science labs consult the DO-IT Knowledge Base article What are examples of accommodations in science laboratories? 
-  Making
Science Labs Accessible to Students with Disabilities
-  What are examples of accommodations in science laboratories?