The Hanna Free Chlorine Checker is ideal for swimming pools & spas as well as fruit, vegetable and salad washing. It is not suitable for cold water aquarium or salt water marine tanks.
The contoured style of the Hanna HI-701 Free Chlorine Checker is designed to fit in the palm of your hand. Its LCD display is large and easy to read and the auto shut-off feature ensures the battery life is not drained if you forget to turn the unit off.
Specifications: Range: 0.00 to 2.50 ppm (mg/L) Resolution: 0.01 ppm (mg/L) Precision: 3% of reading ±0.03 ppm (mg/L) @ 25°C Light source: LED @ 525 nm Light detector: Silicon photocell Environment: 0 to 50°C (32 to 122°F); 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 Method: EPA approved DPD method Standard Method 4500-Cl G.