User manual HANNA INSTRUMENTS PHEP

[. . . ] pHep® Pocket-sized pH Meter OPERATION: · Do not be alarmed if white crystals appear around the cap. [. . . ] · Always replace the protective cap after use. DONOTUSEDISTILLEDORDEIONIZED WATERFORSTORAGEPURPOSES. · Large differences in pH readings (±0. 5 pH) could be due to lack of calibration, dry electrode or rundown batteries. CALIBRATION: The calibration procedure is simple. · Immerse the tester up to the maximum level in pH 7 buffer (HI 7007). pH pH HI 7007 300 HI 70 · Allow the reading to stabilize and using a small screwdriver turn the pH 7 Calibration Trimmer to read 7. 0. Calibration is now complete. ALWAYS USE FRESH BUFFERS FOR CALIBRATION & NEVER REUSE THEM. BATTERY REPLACEMENT: When the pHep® cannot be switched on or the display fades, pull out the battery compartment and replace all three 1. 5V batteries, paying attention to their polarity. Batteries should only be replaced in a non-hazardous area using the battery types specified in this instruction manual. + BATTERIES - RECOMMENDATIONS FOR USERS: Before using this product, make sure that it is entirely suitable for the environment in which it is used. Operation of this instrument in residential areas could cause unacceptable interferences to radio and TV equipment. The glass bulb at the end of the pH electrode is sensitive to electrostatic discharges. [. . . ] ±0. 2 pH ENVIRONMENT 0 to 50°C (32 to 122°F); RH 95% non-condensing BATTERIES 3 x 1. 5V alkaline LIFE approx. 700 hours of use DIMENSIONS 150x30x24 mm (5. 9x1. 2x0. 9") WEIGHT 85 g (3 oz. ) Calibration kit pH 7. 01 (10 x 20 mL sachets) Buffer solution pH 7. 01 (460 mL) Buffer solution pH 7. 01 (230 mL) Storage solution (460mL) ACCESSORIES: HI 77700P HI 7007L HI 7007M HI 70300L HI 70300M Storage solution (230mL) pHep® is a registered Trademark of "Hanna Instruments" Visit our Internet Home Page: http://www. hannainst. com Authorized Dealer ISTRPHEPR1 08/01 [. . . ]