Table 2.

Assessment of total precision (“between-day” precision) under different conditions (an IVF culture medium Global Total HSA and a stable buffered matrix ICQ Eurotrol of different batches, in two different labs with two levels of CO₂. The same conditions were measured on different consecutive days

Matrix	Incubation	Batch	No. of measurements	Mean	SD	CV (%)
Global Total HSA®	Lab 1–K system G210+incubator–pH target 7.22	210114	13	7.22	0.02	0.32
Global Total HSA®	Lab 1–K system G210+incubator–pH target 7.22	210311	13	7.21	0.01	0.17
Global Total HSA®	Lab 1–K system G210+incubator–pH target 7.22	21345077	14	7.22	0.02	0.25
Global Total HSA®	Lab 2–EmbryoScope–pH target 7.22	210506	10	7.22	0.01	0.18
Global Total HSA®	Lab 2–EmbryoScope–pH target 7.22	21345077	9	7.22	0.02	0.23
Global Total HSA®	Lab 2–EmbryoScope–pH target 7.22	220506006235	9	7.20	0.02	0.24
Global Total HSA®	Lab 1–K system G210+incubator–pH target 7.38	210114	15	7.38	0.03	0.34
Global Total HSA®	Lab 1–K system G210+ incubator–pH target 7.38	210311	11	7.37	0.01	0.18
Global Total HSA®	Lab 1–K system G210+incubator–pH target 7.38	21345077	15	7.38	0.01	0.17
Global Total HSA®	Lab 2–EmbryoScope–pH target 7.38	211022001863	9	7.37	0.01	0.13
Global Total HSA®	Lab 2–EmbryoScope–pH target 7.38	220114003796	9	7.39	0.01	0.13
Global Total HSA®	Lab 2–EmbryoScope–pH target 7.38	220311005070	9	7.39	0.01	0.14
ICQ Eurotrol	Lab 1–no incubation	B002	16	7.452	0.009	0.125
ICQ Eurotrol	Lab 2–no incubation	B002	9	7.456	0.009	0.125
ICQ Eurotrol	Lab 1–no incubation	B015	8	7.453	0.009	0.125
ICQ Eurotrol	Lab 2–no incubation	B015	7	7.457	0.009	0.121
ICQ Eurotrol	Lab 1–no incubation	B039	19	7.463	0.006	0.077
ICQ Eurotrol	Lab 2–no incubation	B039	27	7.461	0.007	0.089