Kendrick scale

Kendrick, E. A mass scale based on CH = 14.0000 for high resolution mass spectrometry of organic compounds. Anal. Chem. 1963,35,2146-2154. 

The Kendrick mass scale is based on the definition M(cr = 14.0000 u. [28] Conversion from the lUPAC mass scale to the Kendrick mass scale is achieved by multiplying each mass by 14.00000/14.01565 = 0.99888. The intention of the Kendrick mass scale is to provide an effective means of data reduction, an issue gaining importance again as a result of the steadily increasing resolution and mass accuracy (next paragraphs) of modem mass spectrometers. 

Kendrick, E. Mass Scale Based on CH2 = 14.0000 for High-Resolution Mass Spectrometry of Organic Compounds. Anal. Chem. 1963, 35. 2146-2154. 

Kendrick E, Islam M S and Slater P R (2008), Atomic-scale mechanistic featnres of oxide ion conduction in apatite-type germinates , Chem Commun, 6,115-111. 

---