Best Conductivity Meters & Accessories
A TDS meter (aka ppm pen, nutrient tester, tds stick) is an inexpensive and convenient digital tool to instantly check your overall water quality. The lower the TDS level, the purer the water, with 0 ppm being pure H2O. This TDS tester is ideal for all water purification applications, wastewater regulation, aquaculture, hydroponics, and colloidal silver.
Reviews
Find Best Price at Amazon"Readings are very accurate (I'd have to guess within 2% most (90%) of the time (when tested with a more expensive laboratory model--I've worked in a chem lab for 40 years)."
"We received from a third party supplier Solutions that were calibrated for TDS to Micro siemens (μS)not ppm. When I bought the 342 ppm solution to confirm, I was reading 155 ppm. When I tried to adjust the meter with the adjustment screw, the highest I could get up to was 221 ppm."
"However, note that the picture Amazon provides is apparently the TDS-4TM, which is NOT what you'll receive if you select the "Ships and Sold by Amazon.com" option."
"We use it to check our tap water as well as drinking water we buy."
"We have a reverse osmosis water filter at home and this meter help us to monitore when to change filter cardiges, etc."
"it works, found out that my reverse osmosis drinking water is better than a bottled water."
"As a result, I ordered the 342 ppm calibration solution to check the calibration of the new meter. On 12-22-17 I received the calibration solution, I attempted to calibrate the meter but found that the meter would not adjust."
"Says for more information about calibration and maintenance to go to a link that does not work."
Professional quality combination UBANTE TDS Meter, TDS EC Meter and Temperature Meter. The TDS EC Meter is a professional level water test meter that fits in your pocket! Measurement Range: Conductivity: 0 - 9990 µs/cm TDS: 0 - 9990 ppm (parts per million) Degrees Celsius: 0.1 - 80.0°C, Fahrenheit: 32.0 - 176.0°F. * Accuracy: ± 2%. * Net weight: 1.62oz (46g). * Size: 6.29 x 1.14 x 0.59 inches (160 x 29 x 15 mm).
Reviews
Find Best Price at Amazon"Having moved to a new (ancient) home with its own water supply, I found that following the local farmers high usage for his fields the water appeared cloudy and definitely needed examining for drinking quality purposes."
"Easy to read, accurate measurements and works as described."
"This meter was perfect for testing the performance of our newly installed reverse osmosis water filter."
"I played around a bit and found if I pressed the MODE button until it started flashing WHILE HAVING THE METER IN THE SOLUTION that I could change the reading by pushing the HOLD button to increase reading or pushing the CLEAR button to reduce the reading."
"Great product."
"The price was great."
"Tested our new reverse osmosis water system vs our standard tap water .... what a difference!"
"Our water tested high."
For any type of system that removes TDS, you can install the 'IN' sensor on your tap water (before the system) and the 'OUT' sensor on your product water (after your filtration system) to determine the filter/membrane's effective operating (rejection) rate. This TDS Monitor is highly efficient and accurate due to its advanced microprocessor technology. Highly efficient and accurate due to its advanced microprocessor technology.
Reviews
Find Best Price at Amazon"The meter has a quality feel and was very easy to install."
"I like that you can monitor the IN TDS for well water and the OUT TDS for my drinking water."
"Even if it's not accurately calibrated I can read the TDS input and output relative to each other to know when the filters need changing, rather than blindly changing them after a certain number of months."
"This device saves me the hassle of using a portable TDS meter."
"Can monitor the output of waste and sap to ensure everything is working properly."
"My only complaint is that the small switch to change the readings between in and out broke off after only 6-10 cycles."
"My conclusion is that either my filter doesn't work at all, I have amazing city water so the filter does nothing, or this device simply doesn't work."
"Screen is extremely difficult to read."
Best Dissolved Oxygen Meters & Accessories
Package Contents: 1 x Tacklife PM01 pH Meter. 1 x pH Buffer Powder (for calibration). 1 x User Manual. 1 x Package Box.
Reviews
Find Best Price at Amazon"This is an easy to use PH meter."
"Shipping was slow (I knew that before I ordered), but the price was right, and the meter itself is decent."
"Great ph meter, easy to use and is accurate."
"Very good quality, and Fast delivery."
"Great experience, happy with the product."
"Took a min to figure out how to calibrate it but once you get that done it works pretty good for the money."
"The product is good."
"Does what its suppose to do."
Best Dosimeters
For the best results use high quality TENS unit electrodes pads like. Syrtenty. universal replacement electrodes for all. TENS, EMS & IF. units using snap or pigtail pin type connectors in order for the TENS machine to work best for you. PREMIUM QUALITY These electrodes for TENS unit pads are reusable several times with proper care.
Reviews
Find Best Price at Amazon"I have had a horrible time finding good replacement electrodes for my TENS unit. I assume that is a requirement for these types of items, but it is the first time I have actually seen that for electrodes that I have ordered online."
"They keep their sticky longer and I appreciate that they are cloth and not foam, which is less flexible."
"I got quite a few, as most of the others I'd used weren't sticky after a couple of uses, and I was using it quite frequently due to nerve 'aggravation' following surgery. I've attached a picture of the connectors from my TENS unit next to a ruler and the electrode connectors."
"The reasons that I am so happy with these Syrtenty 2" Square TENS Unit Electrodes 2x2 -... is that they are high quality and last a very long time."
"My wife uses her TENS unit 18 hours per day plus, so we use a lot of electrodes, but these are the best yet."
"I have a BODYMED Model 250 TENS unit which came with 4 small 1 inch square pads. These are much better than the pads that came with the unit."
Best Electrodes
For the best results use high quality TENS unit electrodes pads like. Syrtenty. universal replacement electrodes for all. TENS, EMS & IF. units using snap or pigtail pin type connectors in order for the TENS machine to work best for you. TENS Electrodes Pads are used for electro stim TENS therapy like EMS and electrode massager.
Reviews
Find Best Price at Amazon"I have had a horrible time finding good replacement electrodes for my TENS unit. I assume that is a requirement for these types of items, but it is the first time I have actually seen that for electrodes that I have ordered online."
"The reasons that I am so happy with these Syrtenty 2" Square TENS Unit Electrodes 2x2 -... is that they are high quality and last a very long time."
"My wife uses her TENS unit 18 hours per day plus, so we use a lot of electrodes, but these are the best yet."
"Fits any standard snap on electrode cords."
"I also like to get myself a set of longer pads for the days when my pain covers a larger area. I think the best thing to do is to use one of those little alcohol pad wipes you get when you order ribs at a restaurant. Grabbing the short edge opposite to the cord, pull it off slowly so you don't cause tears or air bubbles under the gel side. 4) If you feel any sharp pains when using it (like tiny pin pricks), this means the gel has dried out. : • At the posting of this review, this is eligible for free shipping to members of Amazon Prime; always a great thing in my opinion."
"I have had a horrible time finding good replacement electrodes for my TENS unit. The quality of these electrodes is excellent and they are a tad larger than the ones that came with my TENS unit."
"The gel material really keeps contact with the skin so there's no bad tingling zap that happens when the other pads come slightly loose."
Best Spectrometry
Teachers in pre-K, elementary, and secondary classrooms use science education kits and products alongside science, technology, engineering, and math (STEM) curriculum to demonstrate STEM concepts and real-world applications through hands-on activities.
Reviews
Find Best Price at Amazon"On the blue side of the spectrum mine was off 5nm, and in the middle of the spectrum (green) mine was off 3nm in the other direction. I calibrated mine in both the blue and green wavelengths, but don't have good way to calibrate the red end of the spectrum due to lack of a know wavelength source in that range. It takes time and effort to collect meaningful performance data and write a quality review -- If you found this review helpful please vote 'Yes!"
"Also if the light source is not very bright then you might not be able to see the scale since it uses ambient light to make it visible."
"However, it is still useful for what I wanted -- checking the smoothness of the light from LED lamps and CFLs."
"Good for rating light color temps."
"This spectroscope is fun and easy to use."
"Works well, wish gradients were further defined."
"This item is also a useful photography accessory - if you plan on using a light, a quick check of the spectra can give you an idea of how good the colors will be."
"Seeing how different light sources give out light at various parts of the spectrum amazes me."
Best pH Testing
Which is why, maintaining an alkaline state not only promotes a balanced body but also, a balanced mind. ✅WHEN IT COMES TO YOUR HEALTH, TEST DON’T GUESS! – If you are looking for an easy, reliable and cost-effective way to accurately monitor the pH levels in your urine or saliva, then the HealthyWiser pH test strips are going to make your life easier! Dual pad ensures super accuracy with results in 15 seconds & are made out of high-quality imported filter paper & reagent from Germany and Japan so strips won't bleed like litmus paper.
Reviews
Find Best Price at Amazon"I just attributed it to the fact that I have been working many long hours, not getting enough sleep and slacking on my healthy diet. So when I had the opportunity to try out these HealthyWiser pH Test Strips complimentary in exchange for my honest review, I was intrigued. I have used pH strips to test out the water in our fish tank, but never heard of them to use as a health aid. When your pH levels aren’t properly balanced, you can experience physical symptoms such as indigestion, fatigue, body pain, and headaches. If you try out these test strips on a day you aren't feeling so great, chances are your pH level is probably on the acidic side. Reduce or eliminate acidic beverages such as soda, alcohol, coffee, processed fruit drinks, and energy drinks.etc. Eat lots of low acid fruits and increase your intake of green, leafy vegetables. Personally, I think this product is great for anyone into natural medicine and those who need to keep to a strict diet such as diabetics or people who suffer from any type of digestive illness. After testing your pH daily, you will probably realize that it is time to get your diet and eating habits back on track."
"Disclaimer: Before making a purchase, I research a product thoroughly, and I depend on honest reviews to aid in my decision making. This product was received for free or at a discount in exchange for an honest and unbiased review. While I have shaken my head at some of the 5-star reviews I have seen other professional reviewers give to lousy 1-star products, simply because they received them for free, I do my best to keep my reviews thorough and unbiased."
"PH testing is a great diagnostic tool you can use to assess your general health & well being."
"Well sealed packaging."
"Strips are easy to read and compare against the enclosed chart."
"May need to have a redesign on the lid."
"Good product."
"These are too hard open the container."