Disposal of the Empty Chemical Bottles 
 

1. Process Outline 
    
   This procedures explains the process of disposal of the empty Chemical bottles for all the hoods in the lab. 
   
2. Safety 
    
   All the users of the lab have to be certified by the NCSU Nanofabrication Facility manager in order to be able to use any Chemical facilities.  
   
3. Equipment 
   

3.01. Apron

3.02. Chemical gloves

3.03. Face-shield 

4. Materials  
   

4.01. Permanent marker (located either in the general area tool box or Chemical hood in storage room).

4.02. Chemical bottle transport carrier. 

5. Safety Precautions 
   

5.01. General safety precautions and Chemical handling procedures must be followed at all times (See Safety Manual).

5.02. Operators should wear safety glasses, apron, face shield and rubber gloves at working station.

5.03. Chemical transport precautions and procedures must be followed when transporting chemicals.

5.04. Review safety precautions and MSDS involving Materials to be used. 

6. Disposal procedure 
    
   There are several types of Chemical bottles and the procedure for their disposal varies according to the type of chemicals used. Please be familiar with the chemicals and their reaction with other types of chemicals (solvents, acids, bases, water, etc.). 
    
   6.A. For the disposal of solvent bottles: 
    
   The solvent bottles should be aired out for 72 hours in the solvent hood (photo-lithography area). Mark the time and date the bottle was set to air out and initial it. Upon 72 hours follow the bottle disposal process. 
    
   6.B. For the disposal of the acid, base and oxidizer bottles: 
    
   These bottles can be immediately disposed of according the outlined procedure.