. 2021 Sep 2;10(9):2070. doi: 10.3390/foods10092070

Table 1.

General overview of oxygen transmission rate (OTR) values (mg/closure/month) obtained or recalculated from the literature for the main wine closures.

Closures		Colorimetric *	Chemiluminescence	Coulometric
Cork stoppers	Technical	0.003 to 0.004	0.025 ^e 0.050 ^e	0.03 to 0.05 ^b
Cork stoppers	Natural	0.007 to 0.010	NA	0.004 to 5.0 ^b 0.001 to 0.051 ^d
Synthetic	Co-extruded	0.033 0.065	0.050 ^f 0.091 ^f 0.141 ^f	0.040 ^b 0.17 to 0.31 ^d 0.7 to 1.4 ^e
Screw caps	Saran-tin	0.001	0.010 to 0.012 ^c	<0.001 ^a 0.008 ^b 0.003 to 0.0039 ^c
Screw caps	Saranex	0.02 to 0.03	0.045 to 0.065 ^c	0.03 ^b 0.02 to 0.03 ^c

* Calculated after steady state reached (6 months). ^a^{, b, c, d, e, f} According to [25], [26], [27], [28], [29], [30], respectively. NA—not analyzed.