On Call® GK Dual
       The On Call® GK Dual is a high-performance device providing the ability to test both blood glucose and ß-ketones on the same meter. Both, the On Call® Chosen and On Call® Advanced test strips are compatible for use with the On Call® GK Dual for glucose testing. The On Call® Blood Ketone Test Strips are compatible for use with the On Call® GK Dual for ketone testing. These test strips are also available individually foil-wrapped for added convenience and reduced contamination risk.
 
On Call® GK Dual Product specifications
Test Time : Glucose: 5 seconds / β-ketone: 10 seconds
Sample Size : Glucose: 0.8 μL / β-ketone: 1.2 μL
Test Range : Glucose: 0.6 – 33.3 mmol/L (10 – 600mg/dL) / β-ketone: 0 – 8.0 mmol/L
Hematocrit Range : Glucose: Refer to strip insert / β-ketone: 20% – 70%
Operating Temp Range : 5 – 45ºC (41 – 113 °F)
Operating Humidity Range : 10 – 90%
Memory Storage : Up to 450 blood glucose and β-ketone records with result type, date and time
Test Averaging : 7, 14, 30, 60 and 90-day averages
Battery Life : Minimum of 3,000 tests
Automatic Shutoff : 2 minutes after last action
Meter Size : 90 x 58 x 19 mm
Display Size : 40 x 36 mm