Portable Read Digital Food Tester Geiger Counter Radiation Detection Combo for Nitrate Tester w/ TDS Digital Meter Water Tester

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Portable Read Digital Food Tester & Geiger Counter Radiation Detection Combo for Nitrate Tester & LCD Digital PH Meter Pen of Tester Aquarium Pool Water


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How healthy are your fresh fruit and vegetables?

Fertilizers that contain necessary elements for plant growth are used for cultivating fruits and vegetables. However, misuse of production technology, usage of prohibited fertilizers, pesticides and chemicals, as well as an increased level of fertilizer concentrations in the soil can all result in a serious damage to your health. Of all the substances that are transferred to the soil from fertilizers, nitrates are one of the most harmful if consumed in excess. Continuous intake of food with a high nitrate content may lead to an elevated risk of serious diseases. 
Are you being exposed to dangerous agricultural chemicals? Many farmers apply too much fertilizer. This can result in unsafe levels of fruit nitrate and vegetable nitrate content. It’s especially dangerous to children.

Nitrates and nitrites in fruit and vegetables: The risk to human health

Most health conscious people know about the dangers of pesticides in fresh fruit and vegetables. Few are aware that fresh fruit and vegetables expose them to dangerous nitrates.
Due to lack of regulations and consumer awareness, nitrates in fresh fruit and vegetables pose a greater threat than pesticides.

Nitrates cause serious disease
It has long been established that excessive nitrates are harmful to health.
Excessive nitrate consumption causes blue baby syndrome and adult methemoglobinemia. Nitrates significantly increase the risk of diabetes, Alzheimer’s and Parkinson’s disease and certain types of cancer.
Some researchers believe that the dramatic rise in cancer of the esophagus recorded over recent decades can be attributed to excessive nitrates in fruit and vegetables.
Nitrate content in fresh produce is unregulated
Due to the dangers, most jurisdictions tightly control the nitrate content of meat products. Food producers who add nitrates to meat must comply with strict regulations and labelling requirements.
Unfortunately nitrate levels in fresh fruit and vegetables are unregulated and unchecked in most places. There are no standards for producers or labelling requirements for sellers.
This is a risk factor. Improper farming and storage methods can result in excessive nitrate content in fruit and vegetables. Because there is no testing for nitrate levels at any point in the supply chain, consumers of fresh fruit and vegetables are exposed to unnecessary danger.
Healthy eaters are most at risk
No food is ever completely safe. Even fresh fruit and vegetables can make people sick from contamination from bacteria, pesticides and other residues.
Consumers are largely protected from these risks by testing and regulatory oversight. However they are not protected from excessive nitrate content in fresh fruit and vegetables. There is no oversight.
Because of this negligence, health conscious people who who eat healthy amounts of raw and lightly cooked fresh fruit and vegetables have a greater risk of consuming harmful nitrates.
More dangerous than pesticides?
People seeking healthier food often choose produce that’s grown organically without pesticides and herbicides. But that organic label can provide a false sense of security.
Fruit and vegetables certified organic may still contain high levels of nitrates, absorbed from over application of natural fertilizers such as manure. So while avoiding harmful inorganic contaminants the consumer may be exposed to unsafe nitrate levels.
Currently the only way to know fruit and vegetables are completely safe is by analyzing the nitrate content of the food you eat.
Nitrate levels in fruit and vegetables can now be measured quickly, easily, and accurately with Greentest, the portable nitrate detector by our company.

GREENTEST-A Scientific Approach To FOOD SAFETY

There Is A Difference

Our company dedicates ourselves to changing the quality of life and protecting us and our children from the infringement of harmful impurities, nitrates and nitrites. As a result, a revolutionary new food safety testing device Greentest, has been developed, which allows detecting fruits and vegetables cultivated improperly and evaluating the concentration of nitrates. It helps us satisfy our “greenlife” desires to rub the lamp.

Now you can identify unhealthy fruit and vegetables with this portable fruit and vegetable nitrate tester

  • Protect yourself and protect your family
  • Simply insert the probe into your sample
  • Easy-to-read test results in just 3 seconds

Greentest works by measuring the electrical conductivity of the fruit or vegetable matter being tested.

Lower resistance = higher nitrate content

The presence of nitrate ions in organic matter measurably increases conductivity. This measurement differs according to the ion concentration and cell structure of the fruit or vegetable under test.

Calibrated through extensive testing

Our scientists developed the Greentest nitrate content protocols by using a mass spectrometer to determine nitrate levels in a large number of fruit and vegetable specimens.

Testing a range of specimens under laboratory conditions allowed us to establish normative levels for various fruit and vegetable species.

A high degree of accuracy

The results were applied to test algorithms which have been coded into the Greentest device. The device has been extensively back-checked against specimens that were subsequently tested with a mass spectrometer.

The device is certified to be more than 90% accurate according to third party testing.

This is more than sufficient to produce a valid assessment of nitrate content.

GREENTEST-A Real Food Detector For Family Use

For Family Use-Portable, Easy To Use, Rapid detection, Clear Guidelines

  • 【Portable】 Small&light,only 85g,convenience to put it in your bag and take out
  • 【Easy To Use】 Just 5 steps to complete a Laboratory-level food test
  • 【Rapid detection】 Just 3sec for result of nitrates,10sec determines radiation
  • 【Clear Guidelines】The interface is simple and clear step instructions, a prominent warning results.

Greentest not justa food detector, it is Professional Home Food Detector.
We hope that every family can keep away from unhealthy , contaminated food and stay healthy






Who Buys It

  • People who want to take better care of themselves and their loved ones, and especially their kids.
  • People who want to make informed healthy choices about the food they eat.
  • People who want to eat healthier with less meat and more good quality fresh fruit and vegetables
  • People who understand the problems associated with modern agricultural practises.
  • People who want to demonstrate the safety of the food they serve.
  • People who want to give someone a useful gift.

The Greentest, food safety testing device, helps people to make healthier choices about their food. The innovative device also helps people in the food business make healthier decisions about the food they choose to grow and sell. It is suitable for small-scale farmers, distributors, store owners, caterers and more anyone with a stake in serving up healthy food. Unlike other methods and equipment on the market, it’s an easy to use food safety testing device with a simple interface and clear, unmistakable results.

It only takes 3 seconds to check the health of your fruit and vegetables

Vegetables and fruits contains various amounts of salt ions, 98% of which are nitrate ions.

The Greentest probe applies a precisely regulated electrical current to a fruit or vegetable specimen.

The proprietary Greentest algorithm accurately calculates the specimen’s nitrate content by comparing its electrical conductivity against a database obtained from exhaustive mass spectrometer testing of similar specimens under laboratory conditions.

Greentest based on third-party testing, the test results certified the accurate to be more than 90%,it enough to determine the accuracy of Greentest.


Detailed Parameters


Model Number: GREENTEST-1A-1

Measurement Range of Nitrate Concentrations: -40~100 degree 


Measurement Accuracy:±10%

Measurement Time:~3 Seconds

Power:Lithium Battery

Charging Current:250mA

Additional Power Source:USB

Voltage Range:5V

Usage Time: Over 6 Hours

Resolution: 320×240

Oper.Temp: 0±50 degreedegree

Dimension: 120mm×52mm×14mm

Weight: 85g



Shipping & Payment


We are proud to offer international shipping services that currently operate in over 200 countries and islands world wide. Nothing means more to us than bringing our customers great value and service. We will continue to grow to meet the needs of all our customers, delivering a service beyond all expectation anywhere in the world.

How do you ship packages?

Packages from our warehouse in China will be shipped by ePacket or EMS depending on the weight and size of the product. Packages shipped from our US warehouse are shipped through USPS.

Do you ship worldwide?

Yes. We provide free shipping to over 200 countries around the world. However, there are some locations we are unable to ship to. If you happen to be located in one of those countries we will contact you.

What about customs?

We are not responsible for any custom fees once the items have shipped. By purchasing our products, you consent that one or more packages may be shipped to you and may get custom fees when they arrive to your country.

How long does shipping take?

Shipping time varies by location. These are our estimates:
Location *Estimated Shipping Time
United States 10-20 Business days
Canada, Europe 10-20 Business days
Australia, New Zealand 10-30 Business days
Central & South America 15-30 Business days
Asia 10-20 Business days
Africa 15-45 Business days
*This doesn’t include our 2-5 day processing time.

Do you provide tracking information?

Yes, you will receive an email once your order ships that contains your tracking information. If you haven’t received tracking info within 5 days, please contact us.

My tracking says “no information available at the moment”.

For some shipping companies, it takes 2-5 business days for the tracking information to update on the system. If your order was placed more than 5 business days ago and there is still no information on your tracking number, please contact us.

Will my items be sent in one package?

For logistical reasons, items in the same purchase will sometimes be sent in separate packages, even if you've specified combined shipping.

If you have any other questions, please contact us and we will do our best to help you out.


Order cancellation

All orders can be cancelled until they are shipped. If your order has been paid and you need to make a change or cancel an order, you must contact us within 12 hours. Once the packaging and shipping process has started, it can no longer be cancelled.


Your satisfaction is our #1 priority. Therefore, if you’d like a refund you can request one no matter the reason.

If you did not receive the product within the guaranteed time( 45 days not including 2-5 day processing) you can request a refund or a reshipment.

If you received the wrong item you can request a refund or a reshipment.

If you do not want the product you’ve received you may request a refund but you must return the item at your expense and the item must be unused.

  • Your order did not arrive due to factors within your control (i.e. providing the wrong shipping address)
  • Your order did not arrive due to exceptional circumstances outside the control of TechOiO (i.e. not cleared by customs, delayed by a natural disaster).
  • Other exceptional circumstances outside the control of techoio.com

*You can submit refund requests within 15 days after the guaranteed period for delivery (45 days) has expired. You can do it by sending a message on Contact Us page

If you are approved for a refund, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within 14 days.


If for any reason you would like to exchange your product, perhaps for a different size in clothing. You must contact us first and we will guide you through the steps.

Please do not send your purchase back to us unless we authorise you to do so.

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