Rechargeable Digital Soil NPK Nutrient Tester

Size: Set, only soil Nitrogen tester, only soil Phosphorus tester, only soil Potassium tester
SKU: THE01894-NPK
Availability : In Stock Pre order Out of stock
Categories: All Products Best Sellers Gardening and Landscaping Greenhouse & Hydroponics Soil Testing
Tags: agronomy tool backlit screen crop nutrition digital soil tester DIY soil test farm equipment field testing fruit tree care garden soil tester greenhouse tool houseplant care lawn soil tester LED display metal probe nitrogen tester orchard management outdoor gardening phosphorus tester potassium tester potted plants precision agriculture professional soil testing raised bed gardening rechargeable meter soil analysis tool soil monitoring soil nutrient detector soil nutrient meter soil sensor tomato growing C charging vegetable garden
$196.88

Size: Set

Set
only soil Nitrogen tester
only soil Phosphorus tester
only soil Potassium tester
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Description

Stop guessing your fertilizer dose and start reading real soil data in seconds. This digital soil nutrient tester measures available Nitrogen (N), Phosphorus (P) and Potassium (K)* directly in the field so you can feed crops accurately, avoid nutrient burn and boost yield. Insert the metal electrode about 2/3 into moist soil and the large backlit LED screen instantly shows nutrient levels from 0–1999 mg/kg with 1 mg/kg resolution. Clear fertility charts help you read whether your soil is extremely lacking, moderate or rich for each crop stage, solving the common problem of over- or under-fertilizing tomatoes, fruit trees, grains and flowers. The rugged probe is designed only for soil (not water or hydroponics) and resists everyday farm use when kept away from stones and rocks. A Type-C charging port makes it easy to top up power from a power bank or USB adapter, so you’re always ready for quick spot checks in gardens, raised beds, orchards and large fields. Ideal for home gardeners, greenhouse growers and professional farmers who want lab-style soil testing without the lab cost.

*Available in Nitrogen, Phosphorus or Potassium probe options; choose the model you need or use all three for a full NPK soil profile.

Specs

Model: Digital Soil Nutrient Tester (N / P / K)

Measurement Range: 0–1999 mg/kg

Resolution: 1 mg/kg

Measured Nutrients: Available Nitrogen (N), Phosphorus (P) or Potassium (K) – by probe type

Display: Backlit LED digital screen

Probe Material: Metal electrode tip
Power Supply: Type-C rechargeable (USB)

Application: Soil testing only (not for water or hydroponics)

Applications

Suitable Users

  • Home gardeners and backyard growers
  • Vegetable and fruit farmers
  • Greenhouse and tunnel growers
  • Landscape and lawn care professionals
  • Orchard and vineyard managers
  • Agronomy consultants and agricultural students

Suitable Scenarios

  • Testing soil before planting or transplanting
  • Adjusting fertilizer plans for vegetables, fruits and grains
  • Checking NPK levels in raised beds, pots and planters
  • Monitoring nutrient status in greenhouses and polytunnels
  • Field spot-checks in large farms and orchards
  • Classroom demos and agricultural training labs
Shipping & Returns

Shipping Policy

  • Orders are processed within 1-2 business days (excluding weekends and holidays).
  • Free shipping is available for the United States, select European countries, and various Asian regions, with a delivery timeframe of 7-20 business days.
  • Duties and taxes are not included and will be collected by the carrier at delivery.
  • Upon shipment, you’ll receive a tracking number via email for real-time updates.

Return Policy

  • We offer a 7-day return policy, starting from the day you receive your item.
  • Items must be unused, in their original condition with tags and packaging, and accompanied by proof of purchase.

Shipping Costs for Returns:

  • Quality Issues: We cover the return shipping costs.
  • Personal Reasons: Customers cover the return shipping costs.

Non-Returnable Items:

  • Used or worn products.
  • Sale/discounted/promotional items.
  • Gift cards.

Refund Process:

  • Refunds will be processed through your original payment method within 5-8 business days after approval.

Nitrogen Tuning for Lush but Stable Leafy Growth

The nitrogen comparison highlights how precise nutrient management turns cabbage and other leafy crops from pale, stunted heads into dense, market-ready produce. With a quick test from the handheld soil nutrient monitor, you can keep N in the “sweet spot,” avoiding soft, pest-prone growth from too much nitrogen and yellowing or slow development from too little—two of the biggest headaches for vegetable gardeners and small-scale growers. For leafy vegetables, an available nitrogen range around 120–150 mg/kg usually delivers strong, dark green leaves while maintaining good structure and shelf life.

Balanced Phosphorus for Deep Roots and Strong Corn Stalks

By reading the value in just a few seconds, you can fine-tune your fertilizer program, avoid wasting money on excess P and protect waterways from runoff—key concerns for today’s sustainable farming and homestead gardens. For most corn fields, the ideal available phosphorus range is 20–30 mg/kg, which supports vigorous root growth and high yields without overloading the soil.

Potassium Control for Heavy, Disease-Resistant Tomatoes

Using this soil nutrient probe, growers can quickly check K levels before feeding, preventing common issues like blossom-end rot, weak skin and poor flavor that come from under- or over-fertilizing. This is especially important as more home growers want farmer-market quality fruit from small spaces and rising fertilizer costs. For tomatoes, the best available potassium level during the fruiting stage is typically 180–220 mg/kg, giving firm, colorful, great-tasting harvests.

Simple Three-Step Operation for Reliable Home Soil Testing

How easy it is to get lab-style data at home: moisten the bed, push the probe about two-thirds into the ground, read the digital value, then wipe the tip clean.

Bright Display and Fast-Charge Probe for On-the-Go Soil Checks

This visual highlights how the large backlit LED screen, USB-C fast charging and sharp metal tip turn the tester into a truly portable smart gardening tool for busy growers. Even at dusk or in the greenhouse, you can plug into a power bank, jab the precision probe into the soil and read nutrient values at a glance—no more waiting for lab reports or squinting at tiny analog meters.

FAQ

Can I use it in water, hydroponics or very sandy/rocky soil?

No. This meter is designed only for classic garden and field soil. It should not be used in water, hydroponic systems, very sandy soil full of stones, or media with a lot of powder or sawdust, as this can damage the electrode or affect readings.

Does it need batteries?

No separate batteries are required. The tester has a built-in rechargeable battery and a Type-C USB port. Just connect it to a USB charger or power bank for fast, convenient charging.

How often should I test my soil?

For most gardens, testing once before planting and then every 4–6 weeks during the growing season is enough. Intensive production (greenhouses, market gardens) may benefit from more frequent checks, especially after heavy rain or fertilizer applications.

Can beginners use this, or is it only for professionals?

Do not force it into stones or hard rocks. After each test, wipe the metal tip with a soft cloth and keep it dry. Avoid leaving the probe in soil for long periods and never immerse the head in water.

What’s the difference between the N, P and K versions?

Each version is optimized to measure one main nutrient—Nitrogen, Phosphorus or Potassium. You can buy a single meter for the nutrient you adjust most often, or use all three to get a complete NPK profile of your soil.

High Accuracy Readings

Ensure precise and consistent pH measurements for reliable results in every application, from water testing to agriculture.

Durable & Reliable Design

Built with high-quality materials, our pH meters are designed to withstand rigorous use, offering long-lasting performance you can trust.

User-Friendly Interface

Featuring intuitive controls and a clear display, our pH meters make testing effortless, even for beginners.

Superior Quality

Certified products with high precision, rigorously tested for reliability.

Global Reach

Trusted by clients across Europe, America, Asia, and the Middle East.

Innovative R&D

Cutting-edge products developed through continuous research and unique patents.

Customer-Centric Service

Tailored support with fast, efficient global delivery.