Best Nitrate Strips 2025

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Last Updated - 26.07.2025

Best Choice

01

TESPERT

TESPERT Water Tester Drinking Water 125 x - 16 in 1 Water Test Strips for Drinking Water Quick Test - Easy Checking of Water Quality - Water Test Strips with Hardness, Lead, Iron, Copper

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27% Off
9.7

Exceptional

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Save money and test 125 times: Our drinking water test kit supports 16 parameters for each test strip, a total of 125 strips, which corresponds to 125 water tests with 1 piece of product. This saves money and time instead of having to test them separately in the lab. Stay up to date on your water quality
Dedicated expert team: Our team of experts has more than 30 years of experience in the water quality industry. We will do our best to answer all your questions about our water test kit products. We are here for you
Call to health: To protect our health, we must determine and ensure that our drinking water is safe and clean at home, free from common impurities and not contaminated by the safe values recommended by the EPA (maximum pollutant values)
A brand you can rely on: TESPERT is a company with 30 years of experience in the water quality testing industry that has the world's best laboratories and research teams as well as over 100 million users worldwide. We are committed to identifying water quality problems and finding professionals to solve them so everyone can use clean drinking water
16-in-1 water test kit for home: Our drinking water test set contains 16 parameters and covers all important impurities you need to worry about, including total hardness, free chlorine, total chlorine, bromine, total alkalinity and pH, nitrate, nitrite, copper, iron, lead, nickel, carbonate, MPS, cyanuric acid, sulphite

16,99 € 23,52 €(27% Off off)
02

FJHTY

9 in 1 Aquarium Test Strips, Pack of 100 Aquarium Water Test Strips for Freshwater Saltwater Test Strips for Testing Iron, Copper, Nitrate, Nitrite, Chlorine, Total Hardness, Total Alkalinity,

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9.6

Exceptional

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Save money and time: 100 aquarium test strips means 100 tests. You can use the aquarium test kit at home to quickly test freshwater or salt water aquariums and fish ponds. Aquarium test strips offer cost-effective water test options. The attached test tube makes testing easier and safer.
Easy to carry: 100 pieces aquarium test strips are packed in a small and lightweight waterproof plastic bottle, with a good sealing performance of the rotating cap, it is easy to carry and can be measured anywhere.
Easy and fast: the entire test process takes only 3 steps: 1. Immerse a water test aquarium test strip in a water sample for 2 seconds. Wait for NO2 and NO3 60 seconds to read the results, and for other parameters, wait 15 seconds to read the results. ③ to compare the results with the colour chart. The process is very simple and very easy to use even for beginners.
Applications: aquarium test kit is a must for testing your aquarium, aquarium, goldfish tank, pond, etc., to avoid invisible water problems that are harmful to fish and aquarium plants, and to ensure that your fish grow healthier.
9-in-1 aquarium test strips: our aquarium water test can help you test the most important 9 parameters - iron (Fe), copper (Cu), nitrate (NO3), nitrite (NO2), chlorine (Cl2), total hardness (GH), total alkalinity (TAL), carbonate (KH), pH.

15,99 €
03

BMUT

25 x 16-in-1 Drinking Water Test Strips - Water Tester for Tap Water Quality Analysis Total Hardness Lead Copper Nitrate

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9.5

Excellent

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[Quick Release Bag] 25 x Test Strips - 16 Parameters with a Test Strip - 16-in-1
[Clear] In German and English. The test strips are just as long as the colour scale on the label. This allows for easy and quick reading. The recommended readings are integrated into the colour scale using bars.
[Check your drinking water] Either directly from the tap or after filter. Alternatively use for pool/swimming pool
[BMUT quality] Highest demands
[16 parameters] Total hardness, free chlorine, iron, copper, lead, nitrates, nitrites, potassium monopersulphate, total chlorine, fluoride, cyanuric acid, ammonium chloride, bromine, total alkalinity, carbonates, pH

9,89 €
Value for Money

04

Tetra

Tetra Test 6-in-1 Water Test for Aquarium, Quick and Easy Check of Water Quality, 1 Can (25 Test Strips), Single

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49% Off
9.4

Excellent

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pH - The pH value provides information about the acidity or base content of the water important for the health of the fish. A pH value between 6.5 and 8.5 is ideal
Quick and easy checking of water quality. With the Tetra Test 6-in-1, you can check in seconds whether the aquarium water is in optimal condition
Pull the test strips through the water a few times, shake off excess water, compare the chlorine test section with the reference scale and after 60 seconds. compare the remaining test sections
KH - The carbonate hardness ensures a constant pH value. Usually a hardness between 3° and 10° dH is recommended
Determines pH, carbonate and total hardness (KH+GH), nitrite (NO2), nitrate (NO3) and chlorine (Cl2) content

9,79 € 19,29 €(49% Off off)
05

Cozii

7 in 1 Aquarium Test Strips, 100 Strips Aquarium Test Kit for Testing PH Nitrite Nitrate Total Hardness, Free Chlorine, Total Alkalinity, Carbonate, Accurate Salt Water, Freshwater Aquarium Water Test

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9.3

Excellent

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Wide application: the test strip sets are widely used in fish tanks, ponds, shrimp tanks and other aquariums. It is a good helper to determine the water quality quickly and accurately. Research shows that your aquarium should be tested at least twice a week to check water quality and prevent fish loss.
Sealed packaging: 100 water quality test strips are included in a closed bottle, which can perform 100 tests on your aquarium. After removing the test paper, the bottle cap should be tightened in time to prevent the test paper from being contaminated by water.
High-quality material: the aquarium test strips are made of high-quality fibre paper and a non-bleeding plastic cushion. After research and design by experienced experts, the test paper does not bleed, and the results can be obtained quickly and accurately.
High-efficiency test suite: this 7-in-1 aquarium test kit. The test strip can monitor 7 elements at once, including: total hardness, nitrate, nitrite, free chlorine, total alkalinity, carbonate and pH. Then you can determine exactly whether your aquarium is healthy water.
Easy to use and read: Dip the aquarium test paper into the water and remove it after 1 second. Place it level for 60 seconds and compare it with the colour chart on the bottle. It is necessary to complete the reading within 30 seconds to get accurate water quality results.

13,99 €
06

RUNBO

RUNBO 6 in 1 Aquarium Test Strips 150 Pieces Aquarium Test Kit for Freshwater Fish Pond Accurate Test Total Hardness Carbonate Nitrate Nitrite Cl2 pH

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14% Off
9.2

Excellent

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Suitable for various aquariums: our test kit is suitable for saltwater aquariums, tropical aquariums, ponds, betta tanks, shrimp tanks and other water aquariums
Regular testing: It is important to test the aquarium regularly to monitor the water quality and keep the water clean. Our test kit helps you test the water twice every week to prevent invisible water problems that can be harmful to fish
Monitored water quality: with our test kit, you can be sure that the water quality of your aquarium is monitored and harmful water problems are prevented
High-quality test strips: Our 6-in-1 aquarium test kit provides 150 test strips in one bottle, which are easy to store and carry. These test strips are made of high quality fibre paper without colour discolouration, so that the water quality of your aquarium can be monitored. It can test hardness, CL2, carbonate, nitrate, nitrite, pH at once
Healthy fish: our test kit keeps your fish healthy and safe, prevents harmful water problems and helps you make your aquarium look healthy and alive

12,99 € 15,11 €(14% Off off)
07

BMUT

BMUT August Engelhardt 50 x 7-in-1 Aquarium Test Strips for Pond Fish Water Values e.g. pH Nitrite Nitrate GH Value

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9.1

Excellent

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

[Most important values] Nitrate (NO3) Nitrite (NO2) Chlorine (CL2) Total Hardness (GH) Total Alkalinity (GA) Carbonate Hardness (KH) pH Value
[German instructions] 7-in-1 for the optimal life of your fish or other water qualities. The test indicates when a water change is recommended. For this purpose, conveniently compare test strips with the label on the bag.
[Easy to use] With this simple test, complex instructions are no longer required. Everything can be read clearly at a glance using the label.
[CERTIFIED] Controlled for the well-being of your fish. Ensured by ongoing quality controls.
[50 test strips] In a comfortable bag with the highest quality.

6,89 €
08

JBL

JBL EasyTest Test Strips

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25% Off
8.8

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Quick orientation test for regular control and adjustment of water values, for aquarium, pond, fountain, spring and tap water, 7 important water values in 1 minute
Easy to use: move the test strip for 2-3 seconds in the water, remove the test strip, horizontal draining of the water, comparison of the colour pads of the test strip with colour scale on packaging
Determination of the following water values: chlorine, acid content (pH), total hardness (GH), toxic nitrogen compound (NO2), algae cause (NO3), pH stability (KH), CO2 content can be determined from pH and the KH value via table
Box contents: EasyTest 7 in 1 test strips on colour scale and CO2 table. Contents: 50 test strips
Box contents: 1 x JBL water test set, Proaquatest Easy 7-in-1, incl. CO2 table and colour scale, 2414400, contents: 50 test strips
50 test strips, cool and dry storage, for optimal results, always remove only the immediately required number of strips

14,87 € 19,99 €(25% Off off)
09

ZenithFast

50 x 16 in 1 Drinking Water Test Strips, Water Tester Drinking Water, Water Hardness Test Strips, pH Test Strips, Drinking Water Test Tape for Easy Testing of Water Quality

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8.7

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Usage: Dip the test strip into the water sample for two seconds, dry the excess water and hold it horizontally for 30 seconds. Use the water test strip on the colour chart to get the results
SCIENTIFICALLY ACCURATE Professional division, you don't have to worry about confusing color parameter values. This makes it easier to understand your water. The 16-parameter water hardness can be used not only for drinking water, but also for aquariums, swimming pools and wellness facilities.
Household 16-in-1 water hardness test strips: Our drinking water test strip contains 16 parameters that cover all important impurities you need to worry about. These include hardness, free chlorine, copper, iron, lead, nitrate, nitrite, total chlorine, bromine, chrome, fluoride, carbonate, pH, total alkalinity, cyanuric acid, quaternary ammonium salts
Fast and cost-effective: water testers drinking water provide an easy and cost-effective way to check your drinking water directly from the tap or filtered. You don't need to do separate tests in the laboratory to understand your water quality at any time and save money and time.
Durability: each water test strip contains 50 water test strips with 16 parameters each. The shelf life of each water test is two years and must be stored in a dry environment at 2-30°C, sealed and protected from light.

7,89 €
10

SMARDY

SMARDY 20 x Water Test Strips 13-in-1 Water Test Strips for Drinking Water Pool Test Water Quality Water Test for Drinking Water Total Hardness pH Chlorine Lead Nitrate

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8.4

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

FAST AND RELIABLE WATER ANALYSIS: Test 13 key water parameters in seconds, including pH, nitrate, nitrite, alkalinity, total hardness (GH), free chlorine & total chlorine, lead, bromine, cyanuric acid, fluoride, copper and iron - for fast, precise results.
Save costs on water testing: the smardy water strips offer an affordable alternative to expensive laboratory testing, so you can regularly check the water quality - for a healthy and safe life!
Robust and durable: high-quality test strips in a secure quick-release packaging protect the accuracy of the measurements and ensure reliable results.
Ideal for everyday use: perfect for home, office, travel or camping. Easily analyse tap water or pool water and make sure your water is always free from unwanted impurities.
Easy to use: immerse the test strip in the water for 2-3 seconds, shake off, and compare the colours with the enclosed scale after 60 seconds - no previous knowledge required

13,99 €