Pocket Checker for Total Chlorine testing  Ref: HI-711
Range   0.00 to 2.50 ppm (mg/L)
Resolution   0.01 ppm (mg/L)
Precision   3% of reading 0.03 ppm (mg/L) @ 25C
Light Source   LED @ 525 nm
Light Detector   Silicon photocell
Environment   0 to 50C (32 to 122F); RH max 95% non-condensing
Battery Type   (1) 1.5V AAA
Auto-off   After 2 minutes of non-use and after read
Dimensions   81.5 x 61 x 37.5 mm (3.2 x 2.4 x 1.5?)
Weight   64 g (2.25 oz.)
Method   EPA approved DPD method Standard Method 4500-Cl G.