Is the fruit and vegetable cleaning machine with monthly sales of over 2,000 worth buying? Test 3 models and tell you the answer

Pesticide residues have always been a concern for everyone, and there have been private messages from fans asking us to test the fruit and vegetable cleaning machines.

Double Eleven is coming soon, so we will make some arrangements for you to see whether it is worth buying.

We bought three fruit and vegetable cleaning machines with high sales and popularity, and prepared to simulate daily usage scenarios to see how effective they are.

Friends who are planting grass, remember to read on!

1. What is the black technology of fruit and vegetable washing machine? Nowadays, fruit and vegetable washing machines generally adopt the technology of [ion hydroxyl purification]. Translated into vernacular, it means: electrolyzed water releases hydroxyl ions, and the strong oxidizing property of hydroxyl ions degrades pesticide residues, achieving the effect of removing pesticide residues.

The business advertises this technology as follows:

Next, let’s test them one by one.

Second, can it really effectively remove pesticide residues? We chose spinach, which has more leaves and is more likely to absorb pesticides, as the experimental subject. Then, based on the national sampling test data, we selected the commonly used pesticide promoted by merchants - dimethoate, and also added a fat-soluble pesticide - high-efficiency cyfluthrin.

Test method: Mix the two pesticides into the concentrations used, spray evenly on the spinach after mixing. Wash the spinach according to the program/recommended time set by the fruit and vegetable machine, and wash an additional portion of spinach with water, and then test the pesticide residue content of the spinach before and after washing.

The experiment in this article only simulates the degradation effect of the machine on pesticides, which does not fully conform to the actual pesticide spraying situation. The results are for reference only.

Almost all businesses cite the clearance rate of dimethoate in their promotions, and the performance is very good, generally above 90%.

Let’s first take a look at the dimethoate removal capabilities of the three machines:

Except for the 3rd machine, whose dimethoate removal rate is slightly lower than that of water washing, the other two machines are indeed better than water washing. At first glance, it is indeed quite good, but a closer look shows that this data is far from the 90% advertised by the merchants, and some are even less than half...

Would the performance of water-insoluble high-efficiency cyfluthrin be even worse? The test results are as follows:

From the data, it seems that fat-soluble pesticides are indeed more difficult to remove. The removal effect of the three machines is even worse than that of water washing, a complete failure!

The technical lady guessed: It may be because fat-soluble pesticides are more stable and not easy to combine with hydroxyl ions, so they are not easily degraded.

Having written this, I suddenly understand why all businesses promote dimethoate and dichlorvos. Because they are soluble in water and easier to remove! But in real life, farmers will not only use this kind of pesticide. If you want to remove them, you can't rely on only one method.

In addition, their "pesticide removal mode" takes more than 5 minutes, and some even take more than 10 minutes. We don't know whether the removal of pesticide residues is due to the machine or the immersion process.

What do you think about the usefulness of the so-called pesticide residue removal device?

3. Is it reliable to use it to wash meat? Can it really effectively remove bacteria? Some bloggers use it to wash meat and seafood, and a lot of white bubbles will come out.

Pay attention! This is not the veterinary drug/hormone residue in the meat. It is just the reaction between the protein in the meat and the hydroxyl ions to produce something similar to a surfactant. Mixing the surfactant with water will make bubbles just like bubble water. Stir it a few more times and it will bubble.

To put it simply, if you add egg white to it, you can also make bubbles:

A quiet complaint: using the same head to wash meat and fruit is so dirty...

As for the ability to remove bacteria, it is useful in theory. But we Chinese basically eat cooked food, and as long as the vegetables are cooked, most of the bacteria can be killed. Why is it necessary to do this?

4. The principle of this magic device, which cost hundreds of dollars, is not difficult. We asked the company's electrical researcher to disassemble three fruit and vegetable cleaning machines. Their internal structures are similar. Apart from some basic parts, the core lies in the titanium mesh/titanium sheet for electrolyzing water. It is this that decomposes water into hydroxyl ions and hydrogen ions.

Does it look impressive at first glance? In fact, the principle is not much different from the electrolysis of water that we learned in junior high school textbooks.

We searched online for similar devices that cost less than $30 and could achieve similar results.

After this test, we found that the pesticide removal capabilities of these fruit and vegetable washing machines are far from what is advertised, and some are even worse than hand washing. As for other functions, they are either pure gimmicks or useless.

Nowadays, the toxicity of pesticides is getting lower and lower, and the residue standards are becoming more and more stringent. If you wash vegetables carefully, you really don’t need to buy an extra fruit and vegetable washing machine. If you are still worried, we have also summarized some simple solutions:

In fact, these small appliances are just a "placebo" to make people feel that spending a few hundred dollars to solve food safety problems is worth the money! As for whether the machine itself is useful or not, it is no longer that important.

But Dad's Review wants to tell you: We don't have to be kidnapped by the propaganda of some businesses and turn "pseudo-refinement" into our own "pseudo-demand". Life can actually be simpler.