My PH meter arrived Friday, but when opened, the electrode is covered with corrosion. Is that normal?
740205
Not unusual and should be OK so long as there is still liquid in the soak bottle.
1586188
The metal at the cord base has a slight bit of rust on mine as well. I only use water in the bird bath that it heats. I have used white vinegar and an old toothbrush to clean off any mineral build up on the metal element, and then rinse it well. This may be worth a try. Hope this is of some help.
2015622
V. Littin, This is normal (especially if new) as the machine eleminates impurities from the room. Read the book.. :-)
2236291
Not entirely sure myself (I can't find the blasted manual). My first guess would be the indicator is reading above its max range. I'd suggest rinsing off the metal tip in case there's something encrusted on it. Also, if it's looking rusty it might be time to replace it. Another possibility is the battery is low though I figure it'll just stop working or the display will be faint.
843332
I just opened mine and got the same chemical smell. It is disconcerting. I'll leave them open for a bit and see.
1552500
Hi Daniel,I got mine on April 21st. I'm using it daily ever since.I just checked it, and there was no sign of rust inside it.Note: I fill it with water from the reverse osmosis purifier only. Maybe that's why I haven't got any rust.ibraheem
2164816
It's probably not corrosion but mineral build up. Only fill to pin. Use cold water. Try brushing off with plastic bristled brush. Try a little distilled vinegar. Try water distiller cleaner.
2164815
It's probably not corrosion but sediment build up. (Scaling) It should also be on the inside of the tank. I clean mine about every 10th - 15th batch. Follow your instructions to clean it.
14901
I put calibration fluid 7.0 in cap, It keeps electrode wet. Be careful with it, they break easy. They work well, when they work. I have had four of them since January. They don't last long. I have a $150 ph pen that has lasted over a year, but I like the cheap ones, they give a reading faster. They are accurate until they die.
780048
Acid is already in it when you receive it, all I did was hook it up to a battery charger to make sure it was fully charged and then it's ready to go.
1099252
I wouldn't know for certain - sounds like it could be oxidation. You could ask for a different pot. I use mine every week, but it had no marks brand new. It has a few pencil-point sized black dots now but it has had burned food when I did not watch it closely and had the heat too high or was cooking something too long by multi-tasking. The dots don't worry me, but if your pan came to you in that condition, I'd ask for a new one. Contact amazon. They can tell you how to send it back and get a new one. They have return labels you can print out. Whenever I have called them with a problem, they promptly call me and I have resolved every one of the few problems I have had. I hope I was helpful.
2074216
I'm guessing the leaking battery acid either corroded a terminal or it's covered with rust to the point it wont conduct electricity. You can try cleaning and inspecting the connections if you like. I wouldn't bother..just get a new one. Make sure you wear gloves. You don't want to get battery acid on your skin.
1851520
Given your results I suspect you are using pH paper or test strips which can be off by a full point or more when testing RO water because the water is so pure. I suggest you get a good digital pH meter to test the water's pH. Remember to test the water in a way that represents normal use. A brand new system will test more acidic than a system that has broken in and is fully pressurized. Using a TDS meter is an indirect way to infer that the system working correctly. Test the water as it leaves the RO membrane and at the RO faucet, and then compare those to the tap water. Remember, the system adds calcium and magnesium minerals which both increase the pH, and increase the TDS. Given your results I suspect you are using pH paper or test strips which can be off by a full point or more when testing RO water because the water is so pure. I suggest you get a good digital pH meter to test the water's pH. Remember to test the water in a way that represents normal use. A brand new system will test more acidic than a system that has broken in and is fully pressurized. Using a TDS meter is an indirect way to infer that the system working correctly. Test the water as it leaves the RO membrane and at the RO faucet, and then compare those to the tap water. Remember, the... » Read More Given your results I suspect you are using pH paper or test strips which can be off by a full point or more when testing RO water because the water is so pure. I suggest you get a good digital pH meter to test the water's pH. Remember to test the water in a way that represents normal use. A brand new system will test more acidic than a system that has broken in and is fully pressurized. Using a TDS meter is an indirect way to infer that the system working correctly. Test the water as it leaves the RO membrane and at the RO faucet, and then compare those to the tap water. Remember, the system adds calcium and magnesium minerals which both increase the pH, and increase the TDS. « Show Less
1947171
This is not normal. I have bought 6 of these and none have had wire protruding. I think it's a manufacturer's defect. They should replace it for you.
2164817
Hello: When you say corrosion, what do you mean? Corrosion is usually rust and flaking away due to the rust. Therefore, corrosion is different from coloration. Are you having coloration or corrosion? Depending on what type of water you are putting into the device, there may be different impurities and minerals in it. As the water evaporates, the minerals are left behind and may cause coloration because of the minerals. Because water evaporates from the top, the top of the container will be the hottest because water sits in the bottom. The hottest heat at the top of the container may "bake" the impurities onto the sides of the container causing coloration and not corrosion. I noticed some coloration which went away. I use purified water in my device to make it purer and to restructure the water and erase any residual signatures via the evaporation. Hope this helps. Keep using it and you may notice it go away. Also, make sure you are filling it to below the water line and not above it.
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.
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.