The analytes in low- and high-concentration QC sample solvents stored under dark conditions such as 2-8°C should be evaluated. <br>The storage duration is at least 8 days (the intermediate days can be appropriately increased).
Analytes in low and high concentration QC sample solvents stored in dark conditions such as 2-8 ℃ shall be evaluated.<br>The storage duration shall be at least 8 days (the intermediate days can be appropriately increased).
The analytes in low-concentration and high-concentration QC sample solvents stored in dark conditions such as 2-8℃ should be evaluated. The storage duration is at least 8 days (the intermediate days can be appropriately increased).