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. 2021 Apr 6;13(7):1173. doi: 10.3390/polym13071173

Table 6.

Measurement uncertainties of dropping factor φ0.

N Density; kg/m3 u(φ0); Type A uc0) U95%
PUR foams
1 50 0.0039 0.0076 0.015
2 112 0.0015 0.0064 0.013
3 144 0.0015 0.0062 0.012
4 427 0.0010 0.0054 0.011
5 846 0.0055 0.0068 0.014
6 1280 0.0020 0.0027 0.005
PTFE
7 2177 0.0014 0.0034 0.0068