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part per thousand
Symbol:  ppt 
Category:  Fraction 
SI Equivalent:  1×10-3 
Dimension nil (fraction) 
System:  INT 
 
Notes
1 ppt = 10-3
Convert     ppt  
1 ppt =
Fraction
  Symbol Unit Name
2.4×10-2  ct, Kt  carat (karat) 
1×106  ppb  part per billion 
0.1  pph, %  part per hundred 
1×105  pphm  part per hundred million 
100  ppht  part per hundred thousand 
1000  ppm  part per million 
1×1012  ppq  part per quadrillion 
1×109  ppt  part per tera 
Glossary