User manual HANNA INSTRUMENTS HI 98103

[. . . ] Checker electrode electrode ® Checker Calibration Electrode: ® Checker ® Checker ® Checker® 1: with HI 1270 screw-type pH Checker® 2: with HI 1207 screw-type pH Checker® 3: with HI 1208 BNC-type electrode Manual two points combination stick pH electrode Checker® 1: HI 1270 (included) Checker® 2: HI 1207 (included) Checker® 3: HI 1208 (included) Environment 0 to 50ºC (32 to 122ºF); 95% RH max. Battery Type 2 x 1. 4V alkaline Life approx. [. . . ] · NEVER IMMERSE THE ELECTRODE UP TO THE CONNECTOR. ALWAYS KEEP THE CONNECTOR CLEAN AND DRY. · 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. 030 0 Checker ® Checker HI 7007 ® Checker HI 1208 ® Checker ® CALIBRATION: · Dip the tip of the electrode (bottom 4cm/1½") in a sample of pH 7. 01 buffer at room temperature. · Use a small screwdriver to adjust the pH 7 trimmer until the display reads "7. 01". · Rinse the electrode with water and dip it in a sample of pH 4. 01 (or 10. 01) buffer solution. · With a small screwdriver adjust the pH 4/10 trimmer until the display reads the chosen buffer value. · Calibration is now complete. ALWAYS USE FRESH BUFFERS FOR CALIBRATION HI 7004 BATTERY REPLACEMENT: Replace the batteries when the display fades, or Checker® cannot be switched on. Remove the battery cover on the back of the meter. Insert 2 new 1. 4V batteries while paying attention to their polarity. Batteries should only be replaced in a safe area using the battery type specified in this instruction manual. ACCESSORIES: HI 1207 Combination pH electrode 12 mm diameter with screwtype connector Combination pH electrode 12 mm diameter with BNC connector HI 1270 Combination pH electrode, 9 mm diameter with screwtype connector HI 70300M Storage solution (230 mL) HI 76504/P2 2x1. 4V alkaline batteries Choose from the following 20 mL sachet solutions: HI 70000P Electrode cleaning/ rinse solution (25 pcs. ) HI 70004P pH 4 buffer solution (25 pcs. ) HI 70007P pH 7 buffer solution (25 pcs. ) HI 70010P pH 10 buffer solution (25 pcs) SUGGESTIONS FOR USERS: Before using this product, make sure that it is entirely suitable for the environment in which it is used. [. . . ] To avoid damage or burns, do not perform any measurement in microwave ovens. Checker® is a registered Trademark of "Hanna Instruments" Visit our Internet Home Page: http://www. hannainst. com ISTRCHKR 02/97 [. . . ]