- Brand: Tzzt
- Series: acid-base test
- Model: ph-2011
Send calibration powder 2 package: ph4.003, ph6.864
The instrument has the following functions:
First, automatic temperature compensation (ATC). (ATC meaning: ordinary pen to be in the water temperature of 25 degrees
Left and right state is more accurate, and ATC does not need, it will automatically measure the water temperature compensation to
25 degrees state), the new pen to buy back does not require calibration,
Second, the new pen to buy back does not require calibration.
Third, large screen display , Can be measured after the decimal point 2 digits, both resolution
Rate: 0.01ph, Note: accuracy error is ± 0.1ph, we are conservative
Accuracy is ± 0.1ph, the actual accuracy of up to ± 0.05ph
This product is my company neutral packaging products
The portable digital pH meter adopts advanced technology and imported components, which greatly reduces the volume, reduces the cost and keeps the original excellent quality, so that the use of pH meter has been popularized. With high stability, high reliability, Simple, cheap and popular in the world, favored by the majority of users.
Measuring range : Ph: 0.00-14.00
Accuracy: ± 0.05PH (measurable two decimal places)
Automatic temperature compensation: 0 ℃ -50 ℃
Operating temperature: 0℃~ 50℃
Dimensions: 151mm × 33mm × 20mm
Weight: 60 grams
This instrument has automatic temperature compensation (ATC)
Professional Tip: First, the glass electrode glass thinner, the higher the accuracy
Second, the benefits of calibration powder: calibration powder shelf life of 5 years, and calibration solution even if not open, only one month after the Health and moss, the other calibration requirements are required against the 250ml distilled water (supermarkets have to sell) calibration, calibration solution The bottle is only about 20ml, simply can not meet the requirements, and the pen into the bottle inside the calibration, the bottle is too small do not go in, open the calibration solution can only put on the failure of 15 days, so with a good bottle calibration solution We do not recommend it.
Note: the normal use of the next year warranty, man-made damage to the need to repair the postage and other expenses borne by the buyer
The glass electrode of the pH meter is fragile! Please do not touch! Glass electrode damage is not covered by the warranty!
Need to English manual, please notify the owner, all other shipments are accompanied by Chinese manual
There is no pH pen without calibration , But the calibration is simple:
Note: The new pen does not require calibration, buy back to use directly
The pH meter must be recalibrated in the following cases:
① have been used (or placed) for a long time after calibration;
② electrode used particularly frequently;
③ measurement accuracy requirements are relatively high.
④ buy a new pen is not required to calibrate Oh
Calibration of pH meter:
1, the calibration powder with 250ml distilled water or pure water rinse the pH electrode immersed in the pH 6.86 mixed phosphate standard buffer solution, and gently shake.
2, with a small screwdriver, facing the pH pen behind the hole, turn left and right to adjust the potentiometer until the display value and the standard buffer solution at ambient temperature ph value of 6.9 match.
3, the same as above, the electrode inserted into the pH4.00 phosphorus stearic acid potassium hydrogen standard buffer solution.
4, about two minutes or so.The display value and the buffer solution pH value should be within the allowable error range.
Do not dirty syrup, after calibration with plastic wrap, you can re-use, after calibration with pure water clean, if not often used, then in 2-3 months to correct once!
How to maintain pH pen:
Long-term need, then, in about two weeks time, the pH pen electrode immersed in pure water, inserted in a one-time cup can be!
1, remove the protective cover.
2. Turn on the switch located in the battery compartment.
3, the pH meter into the measured liquid until the liquid dip to the 'immersion line', conditions permitting, the solution can be dipped slightly higher than the 'immersion line' position.
4. Gently stir the solution and wait for a minute. Read the displayed value.
5. After use, clean the electrode, turn off the switch, and put on the protective cover.
This is the English manual: