electronic pH meter MAREVA, ideal for the control of the pH of your swimming pool. This pH meter from MAREVA will seduce you with its ease of use, accuracy and speed of measurement. Advantages: Digital display Simple, accurate and efficient Allows quick and therefore frequent measurements for optimized water hygiene Performance: Reading pH: from 0 to 14 Display: from 0.1 to 0.1 Accuracy: +/- 0, 1 pH at 20 C otherwise +/- 0.2 pH Calibration: manual Factory setting: pH 6.9 Environment: relative humidity 95% max (0 to 50 C) Alkaline batteries 3 x 1.5V (supplied) Duration of batteries: approximately 150 hours of use Dimensions: 152 x 30 x 21 mm Weight: 50 g Packaging: Delivered in its original packaging