You should first review the Safety Data Sheets (SDS) for the hazardous chemicals and concentrated cleaning products being used within your facilities.
Section 4 will detail first aid measures required when the substance comes into contact with the skin or the eyes.
The verbiage for skin contact may read as follows: "Remove contaminated clothing immediately and rinse skin for 15 minutes with flushing water." This means you will require an emergency combination shower and eyewash. Seek medical attention immediately after exposure.
The verbiage for eye contact may read: "Immediately flush with plenty of water for up to 15 minutes. Remove any contact lenses and open eyes wide apart and continue to flush for at least 15 minutes and seek medical attention." If this is found on your SDS, you need emergency eyewash.