# Coburn_Equation_168635_7 by mxplatform01

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```									                                             Occupational Health Laboratory
Laboratory Information Management System

Coburn Equation Calculator
7/21/2011
Inspection # :

CO = 1316[(0.0046)(2^theta/T)C-(0.007)B+(0.007B-2.3D)e^-2.3t/5500B]
1-e^-2.3t/5500B

where:
CO = theoretical concentration of CO in air (ppm)                                  =        #DIV/0!
C = blood COHb in % at time of blood samples                                      =
B = Activity Factor                                                               =
D = Background COHb level                                                         =
t = time of exposure to CO in minutes)                                            =
theta = time between end of CO exposure and blood sample (in minutes)             =
T = recovery time                                                                 =

Coburn Equation Rev. 1.0 (6/24/2002)
Recovery Time (Mixture)
T = (320)*T1 + (80)*T2 + (23)*T3
(T1 + T2 + T3)

where:
T = recovery time , total, weighted, in minutes                      =   #DIV/0!
T1 = recovey time in air (320) in minutes                            =
T2 = recovery time in oxygen (80) in minutes                         =
T3 = recovery time in hyperbaric chamber (23) in minutes             =

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