How does this device accurately measure nutrients in soil? Meaning what is the actual science behind its function?

No idea but it seems to work my plants look great as long as I keep the ph ,nutes, where they need to be

The needle never moves when testing ph. I tried different soil types and the needle remained all the way to the left. Why isn't it reading?

how do you know that you have several different types of soil? so to find out add a handful of ph stuff, one way or another...acid or basic..like camilla fertilizer to a small area and water and wait a week and retest..if it doesn't good acid them the meter is faulty...or...take it to a nursery and test it on different plants there. The seconds reason is that because the current soil conditions are ideal,the soil is slighty acidic to neutral. So the scale plate needle does not swing and stays on the 5-7 position after inserting soil. Please note insert the meter probe into the soil 2-4 inches, or the pH value testing may fail.

Not sure,it doesn't say on it.There is a symbol on the back saying UKCA.Other than that it's made by moistanland and their website has a contact email that might help you! Meter works great no matter where it's from.I'm happy with it!

How long is the probe on this meter?

The probe is about 4 inches long but you only have to insert in the soil 2 inches for readings.

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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[Upgraded] Soil Moisture Meter, 4-in-1 Soil pH Tester, Soil Moisture/Light/Nutrients/pH Meter for Gardening, Lawn, Farming, Indoor & Outdoor Plants Use, No Batteries Required

[Upgraded] Soil Moisture Meter, 4-in-1 Soil pH Tester, Soil Moisture/Light/Nutrients/pH Meter for Gardening, Lawn, Farming, Indoor & Outdoor Plants Use, No Batteries Required

Product ID: 476730778

Details

Battery description
No Batteries
Brand
Moistenland
Colour
White
Item weight
118 Grams
Number of items
1

💧4-in-1 moisture, light, nutrient, pH sensor

🔄90° rotatable probe for ergonomic readings

🔋No batteries needed – always ready

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¥10086

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Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🌱 Unlock your garden’s full potential with precision and ease!

ROOT FRIENDLY SINGLE PROBE - Durable, precision probe minimizes root damage while delivering accurate soil diagnostics.
ALL IN ONE SOIL INTELLIGENCE - Monitor moisture, light, nutrients, and pH with one sleek device to optimize plant health effortlessly.
ERGONOMIC 90 ROTATING PROBE - Adjust the meter angle for comfortable readings without bending or straining your back.
VERSATILE INDOOR OUTDOOR USE - Ideal for potted plants, lawns, farms, and greenhouses—your all-season plant care companion.
INSTANT BATTERY FREE OPERATION - Get fast, reliable soil data anytime—no charging or batteries required, perfect for on-the-go gardeners.

The [Upgraded] Moistenland Soil Moisture Meter is a professional 4-in-1 soil tester that measures moisture, light, nutrients, and pH levels. Featuring a patented 90° rotating probe for ergonomic use and a durable single probe design that minimizes root damage, it delivers fast, accurate readings without the need for batteries. Perfect for indoor and outdoor gardening, lawn care, and farming, this lightweight, portable tool empowers plant enthusiasts to optimize soil conditions and boost plant vitality effortlessly.

Specifications

ASIN	B0B7DQDRZC
Battery Description	No Batteries Required
Best Sellers Rank	55,532 in Garden ( See Top 100 in Garden ) 70 in Soil Meters
Brand	Moistenland
Colour	White
Country Of Origin	China
Customer Reviews	4.1 4.1 out of 5 stars (2,753)
Item Weight	118 Grams
Manufacturer	Moistenland
Manufacturer Part Number	P403W
Model Number	P403W
Smart Home Compatibility	Not Smart Home Compatible
Unit Count	1.0 count

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