1.1 This test method covers the determination of the isocyanate group (NCO) content of a urethane intermediate or prepolymer. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement
ASTM
Standard Test Method for Isocyanate Groups in Urethane Materials or Prepolymers
STD-45444
1997
2010-12-01
2