Hach Pocket Colorimeter II Single Wavelength Manuel D'utilisation page 17

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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)
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