Theoretical glucose value	Covered with silicone cap mat	Test of evaporation (uncovered)
Meana	Precisiona	Accuracya	Meana	Precisiona	Accuracya	Evaporation
mg/L	mg/L	CV %	Bias (%error)	mg/L	CV %	Bias (%error)	%error
45.0	45.2	0.69	0.44	46.0	0.66	2.05	1.60
18.0	17.7	0.80	-1.68	18.0	0.72	-0.01	1.69
9.0	8.74	1.20	-2.98	8.92	0.81	-0.95	2.09
4.5	4.50	1.26	-0.04	4.58	1.57	1.76	1.80
1.8	1.85	0.74	2.90	2.01	2.82	11.6	8.48
0.9	1.03	1.43	14.1	1.16	3.52	28.3	12.4
a (n = 4)
CV: coefficient of variation.