Has anyone checked what the TDS reading (PPM) for the water is once filtered?
1658932
I can't answer specifically however; you can go onto either the WaterChef site & get the data sheet from the testings (a performance data sheet does come with the unit itself but, I couldn't find your specific question) from the NSF or you can go directly to the NSF site for the information. Just make sure you put in WaterChef Premium Countertop Filtration System Model: C7000 I do have to say, chemical reduction percents were listed between 94.3% - 99.99%
598126
lab way is to get or make known salt concentration to see if reads similar other time. Solutions evaporate over time too. Distilled water should read very low too.
2209058
No. You need a total dissolved solids (TDS) meter for that. You can pick one up in the internet for ~$10.
2052304
IT comes with a Reduce filter but fits a Pur or Brita, so the TDS PPM would be the same as those.
328463
You might try a TDS (Total Dissolved Solids) meter. It isn't a perfect reading of colloidal particles, but, it may give you better idea.
1215423
Yeah the write ups on Amazon are pretty poor, the TDS-EZ does NOT have temperature compensation the TDS-4 has temperature compensation. What temperature compensation means is that the ppm reading will not vary as the temperature of the water varys. The temperature compensation is good from 1 to 50 degrees Celsius, which is 33.8 degrees Fahrenheit to 122 degrees Fahrenheit. You can find this out by going to HM Digital website, which is (I will put in f_ for forward slashes and blank for period): www tdsmeter comf_imgf_selectionguide jpg . BTW, if you look at the reviews on Amazon for HM Digital TDS-EZ (the non-temperature compensated one), there is a review written by John A called, "Convenient, simple to use. Not temperature compensated" and he shows the ppm reading variation vs. temperature for the TDS-EZ meter. It is very large more than 100% variation in ppm reading from 54 degrees to 130degrees. Generally for the extra few bucks I wouldn't buy the TDS-EZ, if you do buy the TDS-EZ it is only good for relative ppm water readings and all the water samples have to be at the same temperature for the relative reading to be valid. Given this headache the TDS-4 is a much better buy given the bang for the buck.
1301145
I live in Southern Calif. and our water here is HARD with dissolved salts and minerals. I bought one to use with my hydroponics water source and it DID NOT remove or change the PPM from that tested before I installed it on the hose.
762682
Here is the answer from Zerowater's FAQ: "Q. Does the ZeroWater filter remove Fluoride? A. ZeroWater filters are not certified for the reduction of fluoride however fluoride is an inorganic compound. The TDS meter is designed to detect inorganic compounds. Fluoride levels in water are usually around 2 to 4 ppm, which will show up on the meter as 002 to 004. So when filtered water reads 000 it is not likely that fluoride is present in water."
2144529
it is a riddle yet..I'd like to have what the filter working inside.. and what will make the reading going up in case of tap water is 54, but the reading is at 94 around after filtering..do you know why?
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
878464
On their website it says;"Q. Does the ZeroWater filter remove Fluoride?A. ZeroWater filters are not certified for the reduction of fluoride however fluoride is an inorganic compound. The TDS meter is designed to detect inorganic compounds. Fluoride levels in water are usually around 2 to 4 ppm, which will show up on the meter as 002 to 004. So when filtered water reads 000 it is not likely that fluoride is present in water."So basically if the water meter reads zero there would not any measurable amount of fluoride in the water.
238450
isn't the best way to test that to test the already filtered water afterwards?
501945
Purchase a TDS meter for under $15. Test the water coming out of your untreated tap. Test the water coming out of the new Ro filter. When the treated number drops 20% of it's original number, time to change the membrane. IE: New=100% efficiency, at 80% it's time to change.
1937004
Not directly. A TDS meter measures total inorganic solids. Hardness measures primarily Ca and Mg solids in water. You can have high TDS water but low hardness. An example is water with high amounts of Na. With that said there is a qualitative relationship between TDS and hardness. Soft water is often related to TDS less than 150. Hard water is TDS over 320. The area between the two is gradational. I am sure the pure chemist who read this may have more exact definitions. There are low cost kits that will measure hardness. Many pool supply companies will measure it for free. Not directly. A TDS meter measures total inorganic solids. Hardness measures primarily Ca and Mg solids in water. You can have high TDS water but low hardness. An example is water with high amounts of Na. With that said there is a qualitative relationship between TDS and hardness. Soft water is often related to TDS less than 150. Hard water is TDS over 320. The area between the two is gradational. I am sure the pure chemist who read this may have more exact definitions. There are low cost kits that will measure hardness. Many pool supply companies will measure it for free.
2175747
Thank you for your interest in WaterChef! WaterChef drinking water systems have been specifically designed to allow beneficial minerals (such as calcium and magnesium) to pass freely through the system, while reducing potentially harmful contaminants such as lead, MTBE, VOC, TTHM's, chlorine, chloramines and particulate matter. These beneficial minerals are what typically make up TDS and PPM. TDS or Total Dissolved Solids is the measure magnesium, potassium and calcium being present in your water and also affect the PPM. We hope this information is helpful to you. WaterChef Customer Care
1935920
Two years is the nominal service interval for these. The best way to monitor the performance of these is to use an inexpensive TDS meter to ensure the membrane is removing greater than 85% of the total dissolved solids from your water. Depending on the water you are treating and prefiltration in your system and water pressure you may be able to get 5 years out of your membrane, or less than two. Get the TDS meter, you will have fun monitoring the performance of your system!
346319
If you are referring to the calibration solution, I just used ro/di water and made sure it wasn't registering any salinity.