Search  for anything...
VIVOSUN

VIVOSUN Digital pH and TDS Meter Kits, 0.01pH High Accuracy Pen Type pH Meter ± 2% Readout Accuracy 3-in-1 TDS EC Temperature Meter for Hydroponics, Pool and Aquarium, Yellow Blue, UL Certified

    • Based on 22,593 reviews
Condition: New
Checking for product changes
$15.99 Why this price?
Save $2.99 was $18.98

Buy Now, Pay Later

As low as $3 / mo
  • – 4-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout. Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product
This item's return window has been extended for the holiday season: Returnable until Jan 31, 2025

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: In Stock.
Fulfilled by Amazon
Arrives Sunday, Nov 24
Order within 11 hours and 44 minutes
Available payment plans shown during checkout

Size: pH Meter Kit


Color: Yellow+Blue


Features

  • Application: Great for all home and laboratory TDS & pH testing applications including aquariums, swimming pools
  • PH Meter: Full measurement range of pH 0 - 14, reliable and quick readings
  • 3-in-1 TDS Meter: Measurement Range 0-9990ppm, 0-9990s/cm; Accuracy 2%, 0.1- 80.0C, 32.0-176.0F; Note: This meter can't test sea water
  • Features: Comes with protective case; Lightweight, handheld design for portability and convenience
  • Included: PH meter, 3-in-1 TDS meter, 3 calibration buffers

Is Discontinued By Manufacturer ‏ : ‎ No


Package Dimensions ‏ : ‎ 6.89 x 3.94 x 1.26 inches; 3.53 ounces


Item model number ‏ : ‎ 4336465266


Date First Available ‏ : ‎ March 14, 2017


Manufacturer ‏ : ‎ VIVOSUN


Best Sellers Rank: #696 in Industrial & Scientific (See Top 100 in Industrial & Scientific) #2 in Lab pH Meters


#2 in Lab pH Meters:


Customer Reviews: 4.1 4.1 out of 5 stars 22,593 ratings


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Nov 24

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Sleek and fast reading.
Size: pH Meter Kit Color: Yellow+Blue
What I like is the TDS Meter is factory calibrated and can be used instantly on receiving the item. Also its repeatability test result is good. The manual says PH meter needs calibration before use and needs calibration frequently. Every time you have to buy calibration salt. Overall very good buy I feel. ... show more
Reviewed in the United States on August 2, 2024 by M.Antony George
    • Seems to work
Size: pH Meter Kit Color: Yellow+Blue
Good value but accuracy questionable
Reviewed in the United States on September 3, 2024 by Dr. Patricia J
    • Work fairly ok after calibrating
Size: pH Meter Kit Color: Yellow+Blue
Review Image by Adam Adam
Review Image by Adam Adam
Ok so at first i was very upset with the ph meter because it was all twacked out. I attempted to calibrate it the first time and made it worse. After doing a calibration on it a second time, now, i can say it work ok. It's still not highly accurate but close enough for my plants and anything else i might want to use it for. That being said, if you do buy this product, be prepared to do some calibrating, probably somewhat often. It states when ph meter electrode its in dry air for long periods of time it will need calibrating, frequent use of will need calibrating, the CAL button was pressed and the electrode was exposed to air for a while, it will need calibrating. So yea, it works, but will need calibrating. ... show more
Reviewed in the United States on August 20, 2023 by Adam Adam
    • Perfect for my needs
Size: pH Meter Kit Color: Yellow+Blue
Got these as I started my hydroponic journey. They did exactly what I needed them to do every time. Lightweight and compact design made it a lot easier to handle. The readings always came back super fast and accurately which made the entire learning process a lot less stressful.
Reviewed in the United States on November 7, 2024 by Kindle Customer
    • Great PH meter. EC came non working
Size: pH Meter Kit Color: Yellow+Blue
In following instructions for calibration, it was easy. Using the PH seems to be accurate. The EC meter on the other hand has not worked properly from the package. Even after replacing the battery, it doesn't want to turn on. It appears to have a faulty on/off button for the 2 times it did turn on, I had to hold the button. That being said, I'm not able to give my opinion for the EC meter function. ... show more
Reviewed in the United States on November 10, 2024 by Peacemaker
    • Horrific accuracy
Size: pH Meter Kit Color: Yellow+Blue
So I bought this set wanting to try out actually tracking and adjusting my pH and EC of my nutrients for my little indoor hydro-farm. Like most people, I didn't want to spend a lot on my little hobby so I figured I would give this product a try as I actually enjoyed some other Vivosun products. I'll start with the TDS/EC Meter. It is actually decent and appears to be pretty accurate right out of the box. I've used it for a little while and it remains to be acceptably accurate so far without any issues. Good to go, this one I'm pretty happy with and will continue to use at least for now. Next I'm moving on to the problem child, the pH Meter. Wow. Where do I begin. I started off trying to figure out how to calibrate this little thing as the instructions drastically varied from all the calibration videos available online for it. Maybe they changed the method but once I figured out how it wanted to be calibrated I went through the steps and all was good. I tested it a number of times using various testing liquids and it was pretty spot on (at least within acceptable limits for my hobby, not anything that needs to be precise though). So I mixed up some of my nutrient solution, cleaned the pH and TDS meters as advised to in the manual and put them away safely. Fast forward 1 week, I pull out the pH meter and dip it into a cup of distilled water and it tells me that it has a pH of 10.3! Far from the value of 7 I was expecting to see. So I pulled out my other pH balanced liquids to test and every one of them was extremely off from what it should be. It completely lost ALL calibration after one use, and one week of storage. I'm sorry but that means I need to calibrate this thing every time I turn it on? And they only supply you with one set of calibration powder that isn't to be re-used? Absolute and complete garbage. The calibration costs for a year would be well into the hundreds a year for a $10 meter! Absurd. This is a product you should definitely skip buying. Buy yourself a 14-sided dice and give it a roll, it will give you a more accurate guess on your pH level than this thing every will. I would return it, but I was not thinking and threw away the packaging already. ... show more
Reviewed in the United States on January 8, 2024 by ndcisiv
    • Affordable and Great!
Size: pH Meter Kit Color: Yellow+Blue
Nothing to say bad about comes nicely packaged and very affordable with all the ph solutions to dial in. I used it for my fish tank to check the water parameters.
Reviewed in the United States on October 31, 2024 by Victoria
    • When water is unreliable
Size: pH Meter Kit Color: Yellow+Blue
Well they work but definitely not made for longevity
Reviewed in the United States on November 9, 2024 by Brian Wilkins

Can't find a product?

Find it on Amazon first, then paste the link below.