Accu-Chek Instant S Control Solution

ACCU-CHEK Instant S Control Solution
You should perform a control test when:
you open a new test strip box.
you left the test strip container open.
the test strips were stored in extreme temperatures, humidity, or both.
you dropped the meter.
your test result does not match how you feel.
you want to check if you are performing the test correctly.

Additional information
BOX
BOX (2 Pcs)