Digital Ph Tester By Guangzhou Sanying Electronic Technology Co., Ltd.

By efficiently understanding the market trends, we are able to export, manufacture and supplied an Digital PH Tester in Guangzhou, Guangdong, China.

OPERATION
a cRemove the protective cap. Do not be alarmed if white crystals appear around the cap. This is normal with pH electrodes and they dissolve when rinsed with water.
a cTurn the tester ON by pressing the 'ON/OFF' button.
a cImmerse into solution up to the max immersion level.
a cStir gently and wait until the display stabilizes.
a cAfter use, Turn the tester off by pressing the i ON/OFFi button, use the water clean the electrode and replace the protective cap. Do not use distilled or deionized water for storage purposes.
a cLarge fluctuations in readings could be due to lack of calibration, dry electrode or rundown batteries.

CALIBRATION
a cImmerse the tester up to the maximum immersion level in pH 6.86 buffer solution.
a cAllow the reading to stabilize and using a small screwdriver adjust the calibration trimmer to read 6.86
a cImmerse the electrode in PH4.01 or PH9.18 the standard buffer solution of borax. Until the display shows i 3.96-4.06PHi ori 9.13-9.23PHi . Always use fresh buffers for calibration.
Important The instrument must be re-calibrated whenever.
a cThe electrode or battery has been replaced.
a cApproximately one mouth has passed from the last calibration.
a cThe electrode has been used in particularly taxing conditions.