User manual HANNA INSTRUMENTS HI 98101

[. . . ] pHel pH electrode pHel pH electrode pHel pH electrode pHel pH electrode Specifications 0. 0 to 14. 0 pH Range Resolution 0. 1 pH Accuracy ±0. 2 pH (@20°C/°68F) Typical EMC ±0. 2 pH Deviation Calibration Two points through trimmers Environment 0 to 50ºC (32 to 122ºF), 95% RH Battery 2 x 1. 4V Life 3000 hours of continuous use Dimensions 200x28x20 mm 7. 9x1. 1x0. 8" Weight 46 g (1. 6 oz. ) Operating Instructions pHel is a very easy instrument to use. Simply switch it on, remove the protective cap and immerse the tip of the electrode (the bottom 4cm or 1½ inch) into the solution. [. . . ] · If the electrode is dry, soak it in tap water for a few minutes. · After use, rinse the electrode with water to minimize contamination. · Store the electrode with a few drops of HI 70300 Storage Solution in the protective cap. DO NOT USE DISTILLED OR DEIONIZED WATER FOR STORAGE PURPOSES. Always replace the protective cap after use. Calibration · Dip the tip of the electrode (4cm/1½") of pHel in a sample of pH 7. 01 buffer (from HI 774P Calibration Kit). · Adjust the pH 7 trimmer until the display reads "7. 0". pHel pH electrode pHel pH electrode pHel pH electrode pHel pH electrode · Rinse the electrode with water and dip it in a sample of pH 4. 01 (or 10. 01 buffer from HI 7710P Calibration Kit). · Adjust the pH 4/10 trimmer until the display reads the chosen buffer value (either "4. 0" or "10. 0"). Lift the battery cover. Check the polarity of the batteries before removing them. Insert two new 1. 4V batteries the same way. Battery replacement must only take place in a non hazardous area using the battery types specified in this instruction manual. · Solutions available for the calibration, the maintenance, the storage and the cleaning of the electrode: · · · · · Recommendations for Users Before using this product, ensure that it is entirely suitable for the environment in which it is used. Operation of this instrument in residential area could cause unacceptable interferences to radio and TV equipments, requiring the operator to take all necessary steps to correct interferences. The glass bulb at the end of the electrode is sensitive to electrostatic discharges. Avoid touching this glass bulb at all times. [. . . ] FOR BETTER ACCURACY, ALWAYS USE FRESH BUFFERS FOR CALIBRATION & NEVER REUSE THEM. Battery Replacement Replace the batteries when the display fades or pHel cannot be switched on or segments are missing. Maintenance · If the electrode remains dry for a long period, before taking any measurement or calibrating, it is necessary to reactivate it by dipping it into HI 70300 solution for approximately 4 hours. The electrode should be cleaned after use and stored with the cap on and some HI 70300 solution inside. · · · HI 70300 Storage solution HI 7061 General cleaning solution (soak for 30 min. ) HI 7073 Protein cleaning solution (soak for 15 min. ) HI 7074 Inorganic cleaning solution (soak for 15 min. ) HI 7077 Oil and fat cleaning solution (soak several times with clean solution) HI 774P Calibration kit (pH 4. 01 & 7. 01 @ 25°C/77°F, 30 ml each) HI 777P Calibration kit (pH 7. 01 @ 25°C/77°F, 2 x 30 ml) HI 7710P Calibration kit (pH 4. 01 & 10. 01 @ 25°C/77°F, 30 ml each) SPHEL 09/96 Stay in Touch with the Manufacturer! [. . . ]