Best Soil PH Tester: Reviews, Buying Guide and FAQs 2021

by Izaz Ahmad

A PH tester is a must-have tool. Whether you are a flower enthusiast or an amateur gardener, a PH meter will be valuable to you. PH stands for the potential of hydrogen. It tells you if the soil is alkaline or acidic. You will know what type of crops you can grow in your garden.

In many cases, most plants grow in acidic land. So, you will want a PH level of less than seven. It ensures that your plants get enough nutrients in the soil. Usually, nutrients are in the form of ions. However, soil with the wrong PH level will not provide your plant access to nutrients. Eventually, these plants will die.

Keep in mind that all plants like PH level seven. For instance, Hydrangeas work well in soil with a 7.5 pH level. That said, you can grow plants that meet the PH level of your soil. For that, you should buy a PH tester for your garden. PH meter will help you to grow healthy plants.

This article reviews the best soil PH tester available on Amazon. Along with product reviews, familiarize yourself with buying guide. Got some questions? Move to the FAQ section to get your answer.

Editor's Recommendation: Top Soil PH Tester 2021

Let's get started.

Top 9 Best Soil PH Tester

Top 9 Best Soil PH Tester
Top 9 Best Soil PH Tester

1. SONKIR Soil pH Meter - Link

SONKIR Soil pH Meter, MS02 3-in-1 Soil Moisture/Light/pH Tester Gardening Tool Kits for Plant Care, Great for Garden, Lawn, Farm, Indoor & Outdoor Use (Green)
SONKIR Soil pH Meter, MS02 3-in-1 Soil Moisture/Light/pH Tester Gardening Tool Kits for Plant Care, Great for Garden, Lawn, Farm, Indoor & Outdoor Use (Green)

Key features:

  • The product dimensions are 11.5 x 2 x 1.5 inches
  • Weight is 2.89 ounces
  • Comes with a 12-month guarantee
  • Three-in-one design

Take care of your adorable plants with Sonkir Soil pH Meter.

The versatile tester has a three-in-one design. It tests the soil condition, detects moisture of the soil and determines the PH value of soil. Further, this pH meter will tell you if your plants are receiving sufficient sunlight. Use it for outdoor and indoor plants.

Sonkir pH tester uses incredible pH detection technology to provide results as perfect as lab tests. It is a durable tester that you can use to check the health of your plants.

Though it is not a unique tester, it provides an accurate number. Not only this, long probes reach deep roots to measure the pH level. The double-needle detection quickly detects the pH level of the soil.

In addition to that, the range of the pH meter is from 3.5 to 8. If you need help, you can read the chart that comes with this tester.

Besides its features, this tester is easy to use. The best thing is you do not need any battery. You can easily switch between the modes. All you need to do is insert extra-long probes into your soil about 4 inches. Wait for a minimum of ten minutes, then check the pH level in the dial. Simple is that.

If the soil pointer does not show pH, light level or moisture, your soil requires water. Odds may be that probe is not close to the roots of your plant. This lightweight tester is portable. You can carry it with you around your garden.

Plus, Sonkir offers one year warranty with this pH meter. You get this tester at an affordable price.

Pros Cons
  • Lightweight
  • Gives instant results
  • Detects sunlight, moisture and pH value
  • Suitable for outdoor and indoor plants
  • Not for use on the rocky earth
  • Requires placement close to plant's root for accurate pH level

2. HighLandy Soil pH Meter 3-in-1 Soil Tester - Link

Soil pH Meter, Soil Moisture Meter 3-in-1 Soil Tester with Moisture, Light and PH Test, Soil Test Kit for Home/Garden/Farm/Lawn/Indoor & Outdoor
Soil pH Meter, Soil Moisture Meter 3-in-1 Soil Tester with Moisture, Light and PH Test, Soil Test Kit for Home/Garden/Farm/Lawn/Indoor & Outdoor

Key features:

  • The product dimensions are 12.87 x 5.51 x 1.5 inches
  • Weight is 3.2 ounces
  • Available in silver color
  • The length of the probe is 5.34 inches

With its dual electrodes, this soil pH meter measures the pH as well as moisture of the soil. It measures pH from 3.5 to 8. That means it detects acidic and alkaline soil. Not only this, this versatile pH meter performs multiple tasks. Besides measuring pH level, it also determines sunlight and shows the results on the interface. This tester will save your plants from getting damaged.

In addition to that, this easy to use tester does not come with a power cord or batteries. The best thing is you do not require any proficiency to set it up. All you need to do is insert the probes in your soil up to six inches. Wait till the needles stop moving. After that, you can read the pH, sunlight and moisture measurements. You can select between pH meter and light meter. In terms of usability, it is suitable for indoor and outdoor plants. You can even carry it around for your garden, farm and lawn.

The small size of this meter ensures that you can store and use it with ease. Keep in mind that you must water your soil before testing it with a pH meter. Further, this reliable pH tester provides results within thirty seconds. No, you do not need to wait for long to read the measurements.

On top of everything, this pH meter provides you with incredible features at a low rate. Provide care to your plant at a minimal cost. What's more, you will get information on the best environment for common houseplants.

Pros Cons
  • No battery is required
  • Simple to use scale
  • Portable and lightweight
  • Three in one meter
  • Results are not accurate.
  • Some customers complain that results are hard to read.

3. Bluelab METCOM Combo Meter - Link

Bluelab METCOM Combo Meter for pH, Temperature, Conductivity (Nutrient) in Water with Easy Calibration, Digital TDS Tester for Hydroponic System and Indoor Plant Grow, Pack of 1
Bluelab METCOM Combo Meter for pH, Temperature, Conductivity (Nutrient) in Water with Easy Calibration, Digital TDS Tester for Hydroponic System and Indoor Plant Grow, Pack of 1

Key features:

  • The product dimensions are 5.7 x 3 x 1.49 inches
  • Weight is 5.3 ounces
  • Comes with two AAA batteries
  • Measures conductivity, temperatures and pH

For more than thirty years, Bluelab has been providing exceptional products that unlock the potential of plants. This versatile pH meter takes the measurement of conductivity, temperature and pH. This meter tells you which parameter you need to fasten the growth of your plant. You can quickly make adjustments for your plants to grow healthy.

This tester is lightweight and portable. It comes with a pH probe and temperature/conductivity probe. Well, the temperature/conductivity probe is built-in. On the other hand, you can replace the pH probe. You can connect the pH probe with the Combo meter and take direct soil measurements. Insert both probes in your soil, and reading will appear on the screen. Simple is that.

But that's not all; the two-point calibration procedure cures you of the pain of pH calibration. Also, you get instructions to calibrate with the product. The pH meter includes a calibration indicator that you can view on screen for thirty days. Calibration only takes three minutes. That said, you do not require to calibrate for temperature or conductivity.

This pH meter comes with two alkaline batteries. It is important to note that you must clean both probes once a month. It is advisable to use Bluelab pH and Conductivity Care kits. These kits increase the life span of the probes. This portable Combo meter does not need a power supply. Get accurate and fast readings anytime you want.

The Bluelab Combo meter is designed in New Zealand. The products of Bluelab are examined by hand before they are launched in the market.

The five-year warranty that comes with the pH meter is cherry on the top. You can invest in this meter with peace of mind.

Pros Cons
  • Easy pH calibration
  • Replaceable pH probe
  • Lightweight
  • Auto-off function
  • Cannot calibrate temperature and conductivity probe
  • Expensive

4. Trazon Soil pH Meter - Link

Trazon Soil pH Meter 3-in-1 Soil Tester Moisture, Light, pH, Meter Tool for Garden, Farm, Plant, Outdoor, Indoor, Lawn Care, Water Soil, Soil Hygrometer Sensor for Gardening, Test Kit for Garden
Trazon Soil pH Meter 3-in-1 Soil Tester Moisture, Light, pH, Meter Tool for Garden, Farm, Plant, Outdoor, Indoor, Lawn Care, Water Soil, Soil Hygrometer Sensor for Gardening, Test Kit for Garden

Key features:

  • The product dimensions are 12.99 x 4.02 x 1.69 inches
  • Weight is 3.2 ounces
  • Available in green
  • Three in one soil meter

Simplify soil testing with Trazon Soil pH Meter that performs three functions. It has three sensors: lightning level, soil humidity and soil acidity. The lightning level sensor tells the firmness of sunlight reaching your plants. Similarly, soil humidity sensors work to determine humidity level. The last one is soil acidity which measures the pH level of your soil. These three mind-blowing features are enough to know the health of your plants. Not only this, it will tell you whether your plant is getting adequate water or not. That said, it is a must-have tool for every garden enthusiast. Let your plants grow with this humidity, light and pH tester.

You do not need to take a sample of soil and submit it to laboratories. Then wait five days for the results. With in-ground light, moisture and pH meter, you will get instant results. You will not spend extra money.

Above all, it is easy to set up. Switch to the analysis position and insert the probe into the soil for 4 inches. Wait for ten minutes, and results will display on the dial. Once you get the results, you can create gardening strategies for the growth of your plant. Getting the profile of soil is easier with this meter. Wipe your probe after using it.

If you want accurate measurement, this pH meter will fulfil your wish. With double-needle detection technology, you will get to know that soil is right for your plants or not.

It is suitable for both outdoor and indoor plants. Run a soil test to find out what your plants require to bloom. And yes, you do not need any battery. It works without charging. However, never put this meter in vinegar or water.

Pros Cons
  • Three sensors
  • Accurate results
  • Suitable for indoor and outdoor plants
  • Get results in ten minutes
  • Not suitable to check water and rock soil
  • Requires cleaning after every use

5. Atree Soil pH Meter - Link

Atree Soil pH Meter, 3-in-1 Soil Tester Kits with Moisture,Light and PH Test for Garden, Farm, Lawn, Indoor & Outdoor (No Battery Needed)
Atree Soil pH Meter, 3-in-1 Soil Tester Kits with Moisture,Light and PH Test for Garden, Farm, Lawn, Indoor & Outdoor (No Battery Needed)

Key features:

  • The dimensions of the product are 9.84 x 1.97 x 1.97 inches
  • Weight is 3.52 ounces
  • Available in four colors
  • The price is $7.99

If you are looking for a cost-effective pH tester, Atree Soil pH Meter is for you. It performs three functions at the same time. In addition to pH level, it also measures moisture and the strength of sunlight. With this small pH tester, your plants and flower will bloom.

You do not need any skill to use it. This pH meter has two probes. Insert both probes into your soil up to six inches. It must be two-thirds of the probes. Unlike other pH testers, it comes in four colors: green, yellow, black and purple. You can choose whichever you like. The right probe measures the pH level. On the other hand, the left probe checks the moisture level of your soil. The red color signals that the soil is dry. The green color indicates the soil is moisturized. The blue color shows the soil is wet. Above both probes, the meter has a sensor that tells you whether your plants are getting proper sunlight. All information appears on the scale above them.

Further, it operates without a battery. You can use it as long as you want. It is ideal for outdoor and indoor plants. That said, this meter will turn your dream of a private garden into a reality.

Consequently, you must never put it in water. The probes are sensitive. They will damage if you use them to test liquid.

Lastly, this meter is Amazon's choice. It has received positive reviews. If you are skeptical about its quality, read the reviews of previous buyers on Amazon. Customers love its features. This pH meter has saved the money of many customers by providing soil profiles within few days.

Pros Cons
  • Affordable cost
  • Easy to use
  • Durable tester
  • Three in one design
  • Cannot be used to test liquid
  • Does not test grow lights

6. Luster Leaf 716750 1840 pH Soil Meter - Link

Key features:

  • The product dimensions are 1.9 x 5.3 x 11.5 inches
  • Weight is 9.3 pounds
  • The price is $21.99
  • Includes pH references for more than 400 plants

Determine the pH level of your soil with the Luster Leaf pH Soil Meter. It is safe for your soil as well as plants. It does not contain any litmus paper or chemicals. This meter includes a single probe to measure the pH level of your soil. It is a logarithmic scale from 3.5 to 9. It is beneficial for you if you have plants that grow in alkaline soil.

In addition to that, this pH soil meter features LED technology and a unique calibration system. It provides quick results on easy to read interface. Also, you will get a comprehensive look at pH as well as nutrients in your soil. This portable pH meter does not require any battery.

An added value is the manual that comes with the product. The manual shows pH preferences for more than 400 plants. You will also learn about the watering needs for different plants. It allows you to get the correct pH for your plants. If you are a novice gardener, this pH soil meter is best for you. Along with the manual, this device provides instructions on what to do with the results.

Further, this easy to use meter is ideal for container gardens, flower gardens, vegetable gardens, and lawns. As all flowers or veggies require different pH levels, the Luster Leaf device offers tips for the common species.

This inexpensive meter saves your additional costs. It includes a cleaning pad. Clean the probe with a cleaning pad after every use. Lastly, it is a simple meter that you can use easily to determine the pH level of your soil.

Pros Cons
  • Easy to read instructions
  • Accurate results
  • Affordable price
  • Includes cleaning pad
  • Not ideal for liquids
  • Probe requires cleaning

7. Kensizer 3-in-1 Soil Tester - Link

Kensizer 3-in-1 Soil Tester, Soil Moisture/Light/pH Meter, Gardening Farm Lawn Test Kit Tool, Digital Plant Probe, Sunlight Tester Water Hydrometer for Indoor Outdoor
Kensizer 3-in-1 Soil Tester, Soil Moisture/Light/pH Meter, Gardening Farm Lawn Test Kit Tool, Digital Plant Probe, Sunlight Tester Water Hydrometer for Indoor Outdoor

Key features:

  • The product dimensions are 11.81 x 2.2 x 1.73 inches
  • Weight is 3.52 ounces
  • Three in one functionality
  • No batteries needed

Whether you have indoor plants or outdoor plants, Kensizer 3-in-1 Soil Tester is ideal for you. It will help you in understanding the needs of your plants. This pH meter comes with double probes for accuracy and fast results.

The best thing is it does not use any power cord or battery. It has three modes, pH, light and moisture. Select whichever mode you like. Plus, insert sturdy 7.9 inches dual bronze and silver probes into your soil. Within few minutes, this measurement tool will show accurate results on easy to read dial. It will tell you whether your soil is alkaline or acidic, too moist or too dry. One more thing, you will learn how much sunlight your plants are getting. With this tool, you will never overwater your plants.

Watch the needle moves to readings on the right. The device has a pH range between 3.5 and 8. It measures moisture on a scale of 1-10. Similarly, measurements of light range from dark to light.

Once this pH meter tests your soil, you can create the perfect soil environment for your plants to grow.

The Kensizer meter is lightweight and compact. You can carry this high-quality meter around your garden. Alternatively, you can keep the tester in your kitchen by using the hanging hook. In case of suitability, it is ideal for outdoor and indoor use. However, you must note that you cannot test the water with this pH meter.

This meter is Amazon's choice. It has helped many customers in growing healthy plants.

Pros Cons
  • Premium quality
  • Affordable price
  • Lightweight
  • Easy to read interface
  • Requires placement close to roots
  • Probes are not strong enough for rocky soil

8. Bluelab PENPH pH Pen - Link

Bluelab PENPH pH Pen, Digital Meter Kit for Water Test with Easy Two Point Calibration and Double Junction Probe for Hydroponic System and Indoor Plant Grow, White
Bluelab PENPH pH Pen, Digital Meter Kit for Water Test with Easy Two Point Calibration and Double Junction Probe for Hydroponic System and Indoor Plant Grow, White

Key features:

  • The product dimensions are 8 x 2.16 x 0.98 inches
  • Weight is 4.3 ounces
  • Comes with a AAA battery
  • One year warranty

Yet again, Bluelab has introduced innovative products to cater for your gardening needs. Bluelab never fails to impress its customers with its exceptional products.

Bluelab PENPH pH tester provides a handy and quick way to grow your plants healthy. It shows the precise measurement of pH level and temperature. The lab-quality glass probe helps you in making adjustments for the growth of your plant. Unlike other pH meters, you can use them to test the water. That said, it is suitable for swimming pools, aquariums, drinking water and fish tank.

This waterproof meter provides instant results. The meter has ATC that shows consistent and accurate results. This meter is durable. That means you can use it multiple times. As compare to traditional probes, this double junction probe stays for a long time.

The ppm meters monitor nutrients in soil and water. It is important to note that this meter is ideal for indoor plants.

Other features include a blacklight display, low battery indicator, auto-off function, and auto temperature unit. In addition to its features, this meter has a user-friendly interface that shows speedy results. Plus, you will get one year warranty. The customer service of Bluelab is outstanding. They provide prompt responses.

Pros Cons
  • User-friendly interface
  • Durable
  • Waterproof
  • Easy calibration
  • Expensive
  • The probe is not replaceable

9. Soil Plant Moisture Meter - Link

Soil Plant Moisture Meter, 3-1 Soil Moisture pH Light Meter, Water Sensor for House Indoor Outdoor Plants, Test Kit for Garden Soil-Tester for Plant Testing Tools -Plant Care- Moisture Sensor
Soil Plant Moisture Meter, 3-1 Soil Moisture pH Light Meter, Water Sensor for House Indoor Outdoor Plants, Test Kit for Garden Soil-Tester for Plant Testing Tools -Plant Care- Moisture Sensor

Key features:

  • The product dimensions are 12.99 x 3.86 x 1.61 inches
  • Weight is 3.2 ounces
  • Three in one design
  • No batteries required

The last on the list is the high-quality Soil Plant Moisture meter. Along with measuring pH level, it also determines the intensity of sunlight and moisture level. Grow adorable flowers and plants in your garden with this meter.

Also, it includes double-needle technology that shows accurate results. You can make perfect decisions about the growth of your plants. Create a thriving environment for your plants.

You do not need any battery for this meter. It operates on solar energy. Thus, no need to charge batteries or control the energy level. A moisture sensor is always on to test your soil.

Further, this meter has a user-friendly display. The indicators on the dial of the meter show the level of pH, sunlight and moisture. Now, you don't need to put extra effort to read the results. The color on the screen provides insights into the condition of the soil. You will find out which metric your plants need.

This pH meter is easy to use. All you need to do is place the probe in the soil for 4 inches. Switch between different modes to get the preferred soil metrics. Beware that this meter does not test hard soil or liquid. When you put it in water, it will break. Most importantly, clean the probe after using it. You will get precise results with the cleaned probe.

Lastly, this soil pH tester has earned the label of Amazon's choice. Customers love its lush quality.

Pros
  • Performs dual functions
  • Suitable for both indoor and outdoor plants
  • Easy to use
  • Easy to read display
  • Not for testing water
  • Probes are not sturdy

How to Choose Best Soil pH Tester

There are different factors that you must consider before buying the best soil pH tester. If your tester does not have essential features, it will fail to deliver desirable results. Thus, your money will be in vain. Ahead, you will find factors that you must consider before buying.

Accuracy

Accuracy is an essential feature in every pH tester. A probe must detect slight variations in moisture, temperature or pH of your soil.

Accurate measurements depend on few factors. The probe should be closed enough to roots and placed into the soil about four inches.

If the needle pointer stays at one point, it means your soil is dry. Another reason might be that your probe is not placed close to roots. Further, you should keep a pH tester in the soil for about ten minutes to get accurate readings.

That said, few pH meters come with extra features that ensure you get accurate results. For example, a pH tester uses double electrodes to assess the pH level.

Regardless of the features of the pH meter, it must give accurate and consistent readings.

Portability

If you want to use a pH tester outside, you must buy a portable tester. When your garden is away from home, it is necessary to have a portable pH tester. Luckily, many pH meters are compact. You can easily carry them around your gardens, farms.

Further, some pH meters are portable. If you want to store the device in your pocket, you should buy a portable pH meter. On the other hand, you do not need a small pH meter for indoor plants or greenhouses. That said, you must know whether you will use a pH tester for indoor or outdoor plants.

Probes

In general, pH meters comes with probes to detect the soil. The pH testers usually include two probes: one tests moisture, and the other measures pH level. However, some pH testers come with a single probe.

If you want a pH tester that provides accurate readings, consider the product that comes with dual probes. Alternatively, a single probe is enough to measure pH of your soil. It depends on what information you want your pH tester to give.

Calibration

A calibrated pH meter provides an accurate reading. When you are looking for a pH meter, you must inspect its calibration settings. Keep in mind that some pH meters require a certain environment to work efficiently. That means, few pH testers are not suitable for hydroponic gardens. For instance, some pH testers do not work on dry soil. Before buying a pH tester, check the instructions for calibrating the tester. A properly calibrated device will work for the environment of your plants.

Durability

You already know that pH testers include probes that test your soil. The device must ensure that the probes are sturdy. The reason is you have to plug the electrodes in the soil. If the pH meter is not well-built, the elements of soil can cause damage to it. Thus, you must check the probes are built strongly into the device.

Display

A pH tester provides readings on the dial. It serves the purpose of having a pH meter by showing the condition of your soil. That makes this feature vital in every pH tester. If a dial is not easy to understand, there is no point in buying a device. A user-friendly display ensures that you clearly understand the readings. Once you interpret the results, you can implement the findings to create a thriving environment for your plants.

Versatility

When you check the quality of soil, you must perform some other tests. These include the moisture level of soil and sunlight. For that, you must have a pH meter that performs all tests on your soil. A three in one designed tester is ideal for knowing the complete condition of your soil. A multi-functional device does all tests. You do not have to buy a separate device for every test. Further, it saves your cost.

Knowing the moisture of your soil ensures that your plant is getting adequate water. If your soil is dry, your plants will die. That's why it is extremely necessary to determine the moisture of your soil. Your plants will grow in the right environment.

In addition to water, plants also need sunlight to grow. Sunlight is essential for all seedlings. It ensures proper germination of seed. Inadequate sunlight stops the grass from growing healthy. That said, a pH tester must test the intensity of light that your plants are receiving.

To sum up, testing only pH is not enough to determine the overall health of the soil. You must check other elements of your soil. It is advisable to buy a convenient pH tester that performs all tests.

Waterproof

A waterproof pH tester is beneficial because probes go into the soil. If your tester is not waterproof, probes will rust. Similarly, low-quality probes will cause corrosion. You can use a waterproof tester to test liquids. However, there are limited pH testers available that tolerate water.

How to Test pH Level of Soil With pH Tester?

Well, every pH tester works differently, but they have some similarities. As all meters use probes, you can use a general process for testing soil. Before testing, clean the probes. After cleaning, rinse electrodes with distilled water and dry them. Never rub them. Alternatively, you can follow the instructions that come with the product to clean electrodes.

Testing soil with a pH tester is easy. You do not need any expertise to do the work. All you need to do is dig a hole in your soil about two inches. Afterwards, fill it with water until the soil is wet. Insert the probe in the hole. Make sure it is clean. Wait for one minute or as long as it is mentioned by the manufacturer. Then take the probe out and see the results.

If the reading shows seven, your soil is neutral. However, a pH level above seven implies that your soil is basic. Consequently, reading less than seven indicates you have acidic soil. While most plants prefer pH of 6.2 to 7, this is not true for few plants. In fact, blueberries and other similar plants like to grow in acidic soil.

Nevertheless, a single test is not enough to get accurate readings. Instead, it is recommendable to perform a test multiple times in different parts of your garden. Once you test your soil, calculate an average of all your readings to find the optimal pH level.

Frequently Asked Questions

When it comes to buying the best pH tester, your mind brims with many questions. You want answers to all questions to support your buying decision. You can get answers to all questions here. This section outlines the most common questions every buyer have. Note that all answers are authentic.

Why does pH Meter Have More Accuracy Than pH Paper?

A pH meter is more precise than pH paper. As the resolution of the pH meter is high, it provides accurate results. Not only this, but you also get consistent measurements with a pH meter. Unlike pH paper, a pH meter is durable.

How Moist My Soil Should Be To Get An Accurate Reading?

A pH meter works in moist soil. However, you should not insert the probe of a pH tester into water. Before inserting the probe, water your soil. Wait for few minutes, then place the probe into the soil. You must know that some pH meters are not suitable for hydroponic gardens.

How Often Do I Calibrate My pH Meter?

Well, it depends on the usage of the tester. The general rule is to calibrate it after every use. It is also advisable to calibrate it once a week or month for precise results. Calibrated meters provide accurate readings.

What Happens If I Don't Calibrate a pH Meter?

You will not get precise measurements if your device is not calibrated. Without calibration, your pH meter will not determine the pH level of your soil. When you don't calibrate, the reliability of a pH meter declines. Thus, you will not get a quality outcome.

Wrap Up

Knowing the health of your soil is vital for the growth of your plants. For that, you must invest in the best soil pH tester. When you find the pH of your soil, you get the best plants. Not only this, a pH tester will ensure that your plants get enough nutrients to grow.

Finally, you have got the list of best soil pH testers on amazon. Buy the one that suits your budget and gardening needs. Indeed, this investment will allow your plants to bloom in your garden. After all, every gardener wants healthy and lush plants. You will never regret this investment.

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