References
- Orion Research Instruction Manual for Carbon Dioxide Electrode Model 95–02.
- Graf , J. E. , Vaughn , T. E. and Kipp , K. H. 1976 . JAOAC , 59 ( 1 ) : 53 – 55 .
- Orion Research Inc. 1969 . Know How on Known Addition Vol. 1 , 11, (2), (1970) reprinted from Newsletter/Specific Ion Electrode Technology 2