What is pH range the monitor gives? Does it require calibration?
1667329
pH on this meter is 0-8. no calibration needed, just cleaning with pad before use.
1667330
It does not need calibration but you must let it stay in soil undisturbed for minimum of 5 minutes until it displays final PH reading and the PH range is less than 5 and above 7
1667331
This pH meter goes from 3 to 8, although if I remember correctly it does not claim accuracy above a pH of 7. There is no calibration required. However, since it depends upon the slight electrical signal generated by the electrodes in damp soil the cleanness of the electrodes is very important. They basically need repolishing before every measurement. That is done using a special polishing tape (Think ultra fine sandpaper, but do not use regular sand paper is it would damage the electrodes). I do wish they supplied more of the policing tape but more can be ordered. Accuracy depends upon cleanness of the electrodes, slightly damp soil (not wet), and if you water the soil to accomplish this you actually need to let it soak in for a couple of hours. Failure to pay attention to those details will alter the readings. I found this out when I failed to let the soil sit for a few hours and got one reading (6.5) and then sent off a soil sample and was told it was 7.3. I hope that helps.
642113
what parameters does it actually measure ??? does it measure ph and ppm or is it just a moisture and light sensor?
1812310
i have only used them for testing drinking water and they do not work. the ph level does not change colors. you should go to a home depot type store and get a soil testing kit from their garden department. i should have returned this product but since i forgot too now it's wasted money.
1126889
I am not aware of any user available calibration pots, but I must admit that mine worked fine right out of the box. You may try dipping the sensor part of the probe in a glass of water filled with ice cubes. You should get a reading of 32 degrees, if you do, you probably have a placement problem but if you get a reading of around 37 in the ice water (after about 2 or 3 minutes) you may have a defective probe or mirror.
559644
I would imagine not to much since your ph is already 5.5. its intended to get water probably to around a 6 or 7 but 5-7 is about the normal range. i haven't actually tested my ph with this device before and after so i couldnt tell you to be exact.
877973
I don't believe the machine can be calibrated, at least I haven't noticed an option. Also the readings are not always consistent if you take a few back to back. Have others noticed this?
544284
Yes, I have. It is off a considerable amount, given the nature of food safety. Food pH that is acidified or low-acid needs to be less than 4.6pH. However, I tested samples that I sent in for laboratory measuring and it's off by approx. .06. It doesn't sound like a lot, but it is. For example, I sent in two samples that I measured with this instrument at 4.42 and 4.31. The lab measured them at 4.48 and 4.37, respectively. The lower number I sent (4.31) them wasn't ideal for my purposes because of amount of food acid I had to add, but I sent it in as a cross-check for my new meter. They wouldn't accept 4.48 as low enough (I realize its lower than 4.6pH, but that seems to be another issue at work here). While I can probably work with the inaccuracy, as long as it remains consistent, I don't have much confidence in this meter. As a side note, I calibrated the meter fastidiously, several times between measurement with both 4.0 and 7.0 calibration fluid. My assessment at this point is to return the item, if possible.
2082262
FROM HM DIGITAL: The PH-200 meter is three-point checked and factory calibrated to pH 7.0. While this is suitable for many applications, It does feature digital auto calibration to pH 4.0, 7.0 and 10.0. The meter should be re-calibrated once per month and it is recommended to re-calibrate it as close as possible to the pH level that will be tested in order to get proper results and prolong the life of your meter.A free packet of pH 7.0 buffer is included with the meter. Additional pH buffers for calibration are available for purchase. For more information, please visit www.tdsmeter.com/products/ph200.html FROM HM DIGITAL: The PH-200 meter is three-point checked and factory calibrated to pH 7.0. While this is suitable for many applications, It does feature digital auto calibration to pH 4.0, 7.0 and 10.0. The meter should be re-calibrated once per month and it is recommended to re-calibrate it as close as possible to the pH level that will be tested in order to get proper results and prolong the life of your meter.A free packet of pH 7.0 buffer is included with the meter. Additional pH buffers for calibration are available for purchase. For more information, please visit... » Read More FROM HM DIGITAL: The PH-200 meter is three-point checked and factory calibrated to pH 7.0. While this is suitable for many applications, It does feature digital auto calibration to pH 4.0, 7.0 and 10.0. The meter should be re-calibrated once per month and it is recommended to re-calibrate it as close as possible to the pH level that will be tested in order to get proper results and prolong the life of your meter.A free packet of pH 7.0 buffer is included with the meter. Additional pH buffers for calibration are available for purchase. For more information, please visit www.tdsmeter.com/products/ph200.html « Show Less
216126
You need to have a solution of known PH so you can test your PH metter and calibrate it according to instructions
1559595
Mine was 7 higher then the one in the Doctor's office. I may be wrong but it is my understanding the calibration is to take it somewhere like your doctor's office and have them use their monitor and then your monitor so you know the difference and then YOU keep in mind the difference. If you find out that I am wrong, then please send a message back to me. I wish they were the same, too.
1719250
Be very careful about changing your PH. Do it in little increments . If it's at 7 just leave it at that
1739556
low ph range from 6.0 to 7.6 and the high ph is from 7.4 to 8.8. most ideal range is 6.8 to 7.8, i think. that is usually the range for most fish. Hope this helps you. :)
1289656
I am not sure but I just bought a life source monitor at the the drug store and I consistently get accurate readings on the first try. Once again, I think the sensors in this machine do not work very well. Money not well spent.
166618
I tried it in liquids to see if it is showing the right numbers (vinegar vs water), but I am not sure if it is accurately shows the liquid PH.
1028226
there are only three modes of operation and no adjustments to be made. Don't worry about the manual, and the pH meter probably will not work well, if at all.
1049007
Youre right, the PH range is 0-14. the picture reads 18.3 because the meter was turned on without being submerged in anything.
1872227
the calibrated range of the ph.7 and ph4.0 buffers is .5 degrees accrurate...I have used this equipment for years and find it to be great...have not used the 10.1 buffer solution in food processes...but will tell you this equipment is very reliable...