User manual EUTECH INSTRUMENTS WATERPROOF PHTESTR 2 PH TESTER

[. . . ] Instruction Sheet Microprocessor based, pH Tester 2 with ATC that floats! Waterproof pHTestr 2 Microprocessor-based Pocket pH Tester BEFORE USE: DO NOT BE ALARMED if white crystals form around the cap. CONDITIONING: Condition the unit before first use. [. . . ] If necessary, proceed to next buffer value (pH 4 or pH 10) and repeat the calibration procedure. You have successfully calibrated the instrument. pH TESTING: · Remove cap and press ON/OFF button on the keypad to turn on the pHTestr 2 · Dip the electrode about 2 cm into the test solution · Stir once, let the display stabilize. Note the pH · Press HOLD/CON button if you wish to hold the reading. Press again to release · Press the ON/OFF button to shut off · Tester automatically shuts-off after 8. 5 minutes to conserve batteries!MAINTENANCE IS EASY: Rinse the electrode in tap water after use. In harsh samples, take readings quickly, rinse electrode immediately afterwards with tap water to remove residues and prevent electrode contamination. To maximize electrode life, place a small piece of clean cloth or sponge in the cap, moisten with tap water (NOT DE-IONIZED WATER), and replace cap. CHANGING BATTERIES: Twist open the batter y compar tment lid. Remove old batteries and replace with fresh ones noting polarity as shown in battery compartment. Re-calibrate after battery change. Keypad USEFUL NOTE: · To avoid cross contamination, rinse between samples and buffer with tap water · Calibration should be done regularly or daily to ensure good tester accuracy. E2 - Wrong or bad buffer value (out of range) or the electrode is failing. [. . . ] Put the small Oring all the way into the ribbed collar. Then push the collar on over the module and hand-tighten by firmly twisting it clockwise. [. . . ]