Hach LANGE Pocket Colorimeter II User Manual page 17

Review the Safety Data Sheets (MSDS/SDS) for the chemicals that are used.
Use the recommended personal protective equipment.
Dispose of reacted solutions according to local, state and federal regulations.
Refer to the Safety Data Sheets for disposal information for unused reagents.
Refer to the environmental, health and safety staff for your facility and/or local
regulatory agencies for further disposal information.
Figure 7 Sample cell orientation
1 Orientation mark 2 Sample cell, 25-mm (10 mL)
English 17