Digital PH Meter for More Accurate Test

Specifications:

• PH testing range: 0.00 to 14.00
• Resolution: 0.01 pH
• Accuracy: +/- 0.01 pH (20 degree)
• Working tempreture: 0 to 45 degree
• Weight: 51 grams
• Dimensions: Length 155 mm, Width 31 mm

This digital PH meter package includes:

• One meter device with 2 batteries (AG13/LR44).
• One manual for instruction and calibration.
• Two sachets of PH buffer powder (pH4.01 and pH6.86 ones are default to send, please tell the seller if pH6.86 and pH9.18 ones required. Additional sachets are available to buy in Optional Purchase while checking out.)
• One plastic box

Importance:

1. The glass electrode is fragile, avoid to be touched or hit, always keep the cap closed while not using, no guarantee for its damage.
2. The device is pre-calibrated by the manufacturer, not necessary to calibrate it before using. We also retest it before sending out to the clients.
3. The calibration is recommended, after 2 to 3 months if the testing has not be done too often, or when the accuracy is required.
4. Calibrate the tester with PH 6.86 buffer powder firstly, then the PH 4.01 or PH 9.18 ones. Should the sample to be tested be acidic, the tester can be calibrated with buffer powder of PH 4.01 and 6.86, while it's alkaline, PH 6.86 and 9.18 ones should be used for calibration. Calibration with these three types of buffer powder is recommended if the tester will be used to test the PH of acid and alkaline. The calibration for this device is computerized and not done manually with a screw driver, read the instruction in the manual.
5. Maintenance, should the device not be used for a long period, simply test it with the clean water every half month.
6. Testing instruction: sway the  device gently against the tested liquid while testing (this may take a while), after the reading is unchanged, then stop and take the reading. Do NOT press the CAL button if not calibrate, this may cause the error.
7. The pH of tested liquid should be within pH 0 to 14 and its tempreture also in 0 to 45 degree, otherwise the detection bulb may be broken if to test the liquid out of this range.
8. Images 3 to 7 were PH testing examples of seller's finsh pond. Never guess the PH, it will cost your fishes' lives.

Calibration Tips (our products only, the seller's experience):

1. 1. Prepare two glasses of 250ml distill or purified water and another glass for rinsing the electrode. Add PH 6.86 and 4.01 buffer powder into each glass and stir the liquid till the powder is fully dissolved.
2. 2. Switch on the device.
3. 3. Immerse the electrode into PH 6.86 liquid, stir gently then hold it till the digital readout is unchanged, ignore the figure.
4. 4. Keep the electrode in the liquid while press and hold the CAL button till the screen is switched off itself (about 4 or 5 seconds, the device goes into calibration status and identifies PH 6.86, 4.01 or 9.18 liquid automatically), the digital reading of 6.86 is now flashing, do not take out the device from the liquid until the reading is unchanged at 6.86, this step is completed.
5. 5. Rinse the electrode in the glass of distill or purified water, shake out the water on the electrode.
6. 6. Do the same as above Step 3 and 4 into PH 4.01 or 9.18 liquid, the difference is when the CAL button is released or after the screen is switched off itself, there is flashing reading of 6.86, at this moment, release the CAL button if still holding then press it quickly once (for PH4.01) or twice (for PH9.18), this has to be done while the reading of 6.86 is still in flash, this time is short and limited. Keep the device in the liquid till the eading is unchanged at 4.01 or 9.18. Then calibration is completed.

Optional Purchase

Spare LR44/AG13 button batteries (2 needed for this device) and addtional sachets of buffer powder are available to buy without extra shipping cost if needed. Please write your selection in "Note to seller" or send us message, otherwise it's default to our choice to send.

Please visit our selling list to buy any quantities of Buffer Powder, spare AG13/LR44 button batteries or other types of pH testing pens, "Add to cart" works for the different small items you purchase from us to be checked out in one order with no extra shipping cost.

This PH tester can be used to test PH for cold drink and juice, watered chemicals and pharmaceuticals, swimming pool and tap water, etc. Calibration should be done regularly while testing in the labs and accuracy required.