Best Digital Water Tester Kit

Whether it’s a swimming pool or a hot tub, it’s absolutely vital that you ensure the water is clean and sanitized, so that it is safe for people to use.

For cleanliness, both swimming pools and hot tubs use different chemical products, so that the water is free from any harmful bacteria and you stop any algae or water beings from growing and appearing. (Where there is water, life follows.

But you have to stop that life from appearing if you want to enjoy your swimming pool or hot tub!)

You don’t have to be an experienced chemist to use the right chemicals for the pool maintenance, however, it is important that you check the chemical levels of the water regularly to ensure everything is okay and safe for use. 

Luckily, you can use a digital water testing kit, to help you keep track of the chemical levels within the water, and allow you to ensure it is safe for a nice dip!

There are plenty of options available when it comes to digital water tester kits, so much so that it can actually get quite overwhelming if you’ve never had to choose a kit before.

They offer different features and different advantages or disadvantages, so looking for the best possible option can be trickier than expected.

To help you out, we’ve compiled a list of our top five options for the overall best digital water tester kit. All you need to do is choose the most suitable for your needs and preferences!

In a hurry?

Keeping track and ensuring that the right levels of chemicals are in place within your swimming pool or hot tub is super important. The water needs to be clean and safe before you can take a swim or relax.

If you’re in a hurry to find the best possible digital water tester kit, we recommend you check out our number one top choice: the HM Digital TDS-EZ Water Quality Tester.

From a reliable and high-quality brand, the TDS-EZ Water Quality Tester is an excellent choice and the best price for value option. Thanks to its advanced microprocessor technology, it is extremely accurate, with readings within the 3%.

The button cell batteries it is powered by are included and have an incredibly long-lasting battery life of up to 1000 hours. It has an auto-off function to help you save that battery life too, as it will automatically turn off after 10 minutes of inactivity.

The hold function allows it to save the measurements, for easier reading and recording that makes this water tester highly convenient.

The measurement range goes from 0 to 9990 ppm, displayed on a large and easy-to-read LCD screen. This TDS-EZ meter is calibrated with a 342 ppm NaCl solution, and it can be recalibrated easily with a screwdriver if needed.

Here are the main features:

  • Budget-friendly option
  • Advanced microprocessor technology - extremely accurate readings
  • Long battery life with Auto-off function
  • Hold function that saves the readings
  • Measurement range from 0 to 9990 ppm - displayed on a large LCD screen
  • Highly durable and long-lasting with a TDS chart included
  • Meter is calibrated with a 342 ppm NaCl solution

Top 5 Best Digital Water Tester Kit

OUR TOP PICK

HM Digital TDS-EZ Water Quality TDS Tester, 0-9990 ppm Measurement Range, 1 ppm Resolution, 3% Readout Accuracy

HM Digital is an excellent brand and provider of digital water tester kits, making their products highly reliable and favored amongst customers around the world.

The TDS-EX Water Quality Tester is no exception, and it’s a great choice for reliably and accurately testing your swimming pool or hot tub water.

Made 100% from plastic, it’s a super budget-friendly option and is highly convenient and easy to use. It is an economy model ideal for end-users, with an incredible accuracy of within 3%, thanks to its advanced microprocessor technology.

It is powered with button cell batteries that are included with the product, with a battery life of approximately 1000 hours.

This means you can regularly check the water of your pool (it is recommended that you test the water once a day), without having to worry about having to replace the batteries any time soon.

It features a hold function that allows it to save the measurements, for easier reading and recording that makes it highly convenient to use.

It also has an auto-off function, so that it turns off automatically after 10 minutes of inactivity, helping you save that battery life to last longer. 

The measurement range goes from 0 to 9990 ppm. These measurements can be read on the large LCD display screen.

The TDS-EZ meter is calibrated with a 342 ppm NaCl solution, and it can be recalibrated with a mini-screwdriver if needed.

It also includes a TDS chart sticker at the back as a helpful guide to TDS values.

The translucent blue housing is highly durable and resistant, allowing you to use this water tester over and over again without it malfunctioning!

PROS:

  • Budget-friendly option
  • Advanced microprocessor technology - extremely accurate readings
  • Long battery life with Auto-off function
  • Hold function that saves the readings
  • Measurement range from 0 to 9990 ppm - displayed on a large LCD screen
  • Highly durable and long-lasting with a TDS chart included
  • Meter is calibrated with a 342 ppm NaCl solution

CONS:

  • A little temperature-sensitive

EDITORS CHOICE

LaMotte 2056 ColorQ Pro 7 Digital Pool Water Test Kit

If you’re looking for a more advanced digital water tester kit, able to provide a reliable and accurate reading of your water levels, the LaMotte 2056 ColorQ Pro 7 Digital Water Tester Kit might be the product for you.

It’s more expensive than other products on our list, but it sure is worth the price considering the capabilities it features.

Just as the name suggests, it is a pro water testing kit and is, therefore, more suited to those that work in this area of expertise, or for those that are really serious about getting their water tested!

In case you’re not convinced of how pro this water tester is: it can test the Free Chlorine, the Total Chlorine, the Bromine, the PH, the Alkalinity, the Calcium Hardness, and the Cyanuric Acid.

It’s very simple to use, as you fill up a few vials with water from your swimming pool or hot tub, and then add five drops of whichever reagent you’re working with.

Once the vials are placed into the tester, you hit a button and the results are displayed on an easy-to-read LCD screen. The measurements are extremely accurate and professional.

The digital reading is possible thanks to the photometer featured in the product. The water-resistant housing the kit features is highly durable and resistant, allowing you to use the kit regularly without it suffering any damage.

There is also a carrying case included so that you can carry all of the items of the kit together, for easier portability and convenience.

PROS:

  • Highly professional and pro water testing kit
  • Tests multiple different water levels for different chemicals
  • Uses liquid reagents to test the water
  • Easy-to-read display screen for results - easy to use
  • Water-resistant housing and carrying case for durability and convenience

CONS:

  • Reagents have a short shelf life and need to be replaced

BEST VALUE

Aqua Chek Aqua Chek Trutest Digital Reader

The AquaCheck TruTest Digital Reader is a very popular choice amongst customers, perhaps because it manages to combine digital reading with the traditional paper tasting method.

This device has a slit in which you insert a paper test strip, and the results of the reading will then be displayed on the large and easy-to-read LCD screen.

All the difficulty of trying to match the color from the test strip to measurement is now replaced by the device interpreting the result and offering you the exact reading in a digitally displayed number.

It reads the strips in just 15 seconds (which is a lot faster than what it takes to try and match the color yourself, trust us!)

It can very accurately read Free Chlorine, Bromine, PH, and Total Alkalinity. It requires 2 AA batteries to work, and it is completely water-resistant.

It is also very lightweight, which makes it super easy to carry around and transport when needed.

It works with the TruTest Digital test strips that you will have to continuously stock up on. Nevertheless, it’s a simple-to-use device that will provide accurate readings!

PROS:

  • Combines digital reading with paper strips
  • Large easy-to-read LCD display screen
  • Provides the measurements in just 15 seconds
  • Accurately reads several water levels
  • Water-resistant and lightweight

CONS:

  • Can only be used with Trutest Digital test strips
  • Not completely digital (you have to buy test strips continuously)

RUNNER UP

HM Digital TDS-4 Pocket Size TDS Tester Meter with 0-9990 ppm Measurement Range , 1 ppm Resolution, +/- 2% Readout Accuracy

The HM Digital TDS-4 Pocket Size Tester Meter is very similar to our top option, with an equally economical design made out of plastic that allows this digital water tester to be budget-friendly and far more accessible than other choices.

This TDS tester is ideal for testing your swimming pool or hot tub, but it is also ideal for professionals who work with wastewater regulation, aquaculture, hydroponics, and colloidal silver.

The advanced microprocessor technology it features allows it to provide you with extremely accurate readings. And the Automatic Temperature Compensation ensures that accuracy even in different temperature conditions.

The Hold function freezes the measurement on the screen so that you can check it and read it better, out of the water, making it highly convenient.

It also features an Auto-Off function that helps save battery life by automatically shutting the device off after 10 minutes of inactivity.

The alkaline batteries it requires are included with the product, and it is overall highly durable and long-lasting. The sleek design makes it really easy to transport and carry around, as it truly is a pocket-size water tester.

PROS:

  • Budget-friendly choice
  • Advanced microprocessor technology - extremely accurate readings
  • Ideal for commercial and professional use
  • Automatic Temperature Compensation feature
  • Hold function and Auto-Off function

CONS:

  • The LCD screen is hard to read
  • Not waterproof

RUNNER UP

Digital PH Meter, 0.01 PH High Accuracy Pocket Size PH Meter / PH Tester with 0-14.0 Measuring Range, Water Quality Tester for Household Drinking Water, Swimming Pools, Aquariums

The MiToo Digital PH Meter Water Quality Tester is a highly practical and functional option, able to provide good value and reliable water readings at a great and budget-friendly price.

It also has one of the best PH meters in the market, as it can measure from 0 to 14 pH with ease, allowing you to see the state of your pool even if it’s really bad!

It has a large and easy-to-read LCD display screen, making it very easy to use and record the measurements. The lightweight design also allows it to be very easy to transport to wherever it is needed, just make sure not to forget it! 

It has an Automatic Temperature Compensation feature, which allows it to provide more accurate readings despite any differences in temperature within the water or time of day. It also features Auto Calibration, making it even easier to use. 

Whether you need to test your swimming pool or hot tub, or whether you want to check the PH of a pond or the water you drink, it’s a versatile and highly convenient digital water tester that will provide you with the readings, fast and easy.

PROS:

  • Best PH meter - from 0 to 14
  • Large and easy-to-read LCD display screen
  • Automatic temperature compensation feature
  • Auto-calibration
  • Convenient and easy to use with a budget-friendly price

CONS:

  • Accuracy of the readings can be inconsistent

Best Digital Water Tester Kit Buying Guide

Buying a good digital water tester kit can be harder than it seems at first, as there are different factors to take into consideration and many different features to look out for so that the total value of the product is as high as possible for a reasonable price.

Accuracy

Look out for advanced accuracy and highly reliable products to ensure you’re getting consistently good measurements.

Display Screen 

It’s important for the display screen to be easy to read, especially because if the device is placed underwater.

Added Features

Features such as Automatic temperature Compensation, Auto-Off, Hold functions, and many others that will make the readings a lot easier and a lot more accurate.

Durability and Battery life 

Digital water tester kits are usually battery-powered, so it’s good to look for long-lasting batteries.

Not all devices are waterproof, but we highly recommend you look for one that is, as it is far too easy for you to accidentally drop it in the pool as you’re testing the water!

Frequently Asked Questions

What is the most accurate way to test pool water?

The most common and inexpensive way of testing pool water is by using test strips.

However, digital water testers are just as accurate and they are a lot easier to use, as they will give you the water reading in a digitally displayed result, rather than you having to match the color result of the test strip to a number.