---
title: "Nitrate Test Kit — $114K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/pet-supplies/nitrate-test-kit"
last_updated: "2026-07-21T17:36:27.273Z"
locale: en
meta:
description: "Niche score 54/100 · $114K/yr market · 54K searches/yr. A concentrated shelf (top 5 take 76% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 54/100 · $114K/yr market · 54K searches/yr. A concentrated shelf (top 5 take 76% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Nitrate Test Kit — $114K/yr Amazon US Niche (2026) - Flapen"
---
# **nitrate test kit**
**Worth a look**
Shows low returns (1.2%), but a concentrated shelf (top 5 take 76% of clicks) keeps it on the watch list.
Market size 27Growth 65Conversion 87Competition 20Returns 91Price range 87Avg price 90Brand share 39Review moat 45Quality gap 43
**Returns**
**Great****1.2%**
return rate — above 6% kills the launch gate
**Avg price**
**Great****$21.04**
avg listing price — sweet spot $15–$100
**Conversion**
**Great****9.9%**
search→purchase rate — share of searches ending in a sale
**Price range**
**Great****$9.15–$64.26**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Growth**
**Good****+43.5%**
90-day search growth — must beat 0% to launch
**Review moat**
**Okay****2,007.77**
avg incumbent reviews — the moat a new listing must climb
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Brand share**
**Okay****81%**
top-5 brand share — brands hold most of the demand
**Market size**
**Okay****$114K**
$114K/yr · 54K searches
**Competition**
**Bad****76%**
top-5 click share — a locked-up shelf
According to Flapen's Amazon United States niche tracking, nitrate test kit is a $114K/yr Amazon United States market (54K searches/yr). The top 5 brands hold 81% of demand. Demand peaks in Jun. Verdict: Worth a look — 54/100.
Data updated Jul 17, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **nitrate test kit market data**
- **Units sold / yr**
- **5K–6K**
- avg 500–750/product
- **Revenue / yr**
- **$105K–$126K**
- units × avg price
- **Launch success**
- **—**
- 1 of 1 new (360d)
- **Conversion rate**
- **9.9%**
- **Avg BSR**
- **#89**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **54%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **66 months**
- **Avg seller age**
- **170 days**
## **Competition & brand share**
The top 5 products capture 76% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**12 **▼falling
**Sellers**
**68**
**Top-5 brand share**
**81%**
Top 20: 100%
**Top-5 click share**
**76%**
Top 20: 100%
**Open market**
**14%**
- API27% - TESPERT25% - HACH18% - SJ WAVE6% - Watersafe5% - Hanna Instruments5% - Open — no brand owns it (6 brands, 14%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +43.5% search growth over the last 90 days.
3K2KSpike '24Spike '25Prime Day '25Black Friday '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Jun · busiest ÷ quietest = 2.8×
[**Open Trend **](https://flapen.com/research/us/pet-supplies/nitrate-test-kit/trend)
## **Top nitrate test kit search terms**
- **nitrate test kit**46K/yr+51.5%9.5% conv. - **nitrate test**4K/yr+15.7%7.8% conv. - **nitrite test kit**5K/yr-11.3%7.8% conv. [**All search terms **](https://flapen.com/research/us/pet-supplies/nitrate-test-kit/search-terms)
## **Top nitrate test kit products on Amazon**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%10%$11K20%$23K30%$34K40%$46K1001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 13 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**TESPERT Drinking Water Test Strips 125ct 16 in 1 30s Quick Screening for Hardness pH Iron Nitrite Copper Chlorine Nitrite Carbonate Lead Alkalinity...Well Tap Home City Water Testing**TESPERT**$18.12**4.4★3,161 rev](https://www.amazon.com/dp/B0BG63JJ3T) [2**API NITRATE 90-Test Freshwater and Saltwater Aquarium Water Test Kit**API**$11.24**4.7★3,263 rev](https://www.amazon.com/dp/B002DVVICS) [3**Hach 2745425 Nitrate and Nitrite Test Strips**HACH**$16.32**4.7★117 rev](https://www.amazon.com/dp/B00R3EQFDM) [4**API NITRITE TEST KIT 180-Test Freshwater and Saltwater Aquarium Test Kit**API**$11.75**4.7★3,263 rev](https://www.amazon.com/dp/B000255NC8) [5**SJ WAVE 22 in 1 Water Test Kits - 125 Strips Drinking Water Test Kit Home Tap and Well Water Tester for Bacteria pH Hardness Lead Iron Copper Chlorine Cyanuric Acid**SJ WAVE**$18.70**4.3★7,448 rev](https://www.amazon.com/dp/B07WNJJVKN)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**All-New 23 in 1 Drinking Water Testing Kit 158 Strips Well Water Testing Kit & Water Test Strip for House Water for HardnessChlorine Copper Iron Lead pH and More**AESCULIX**$20.19**150 rev11mo ago](https://www.amazon.com/dp/B0FMJT98YV) [**Lead Water Test Kit 2026 Upgraded 8 in 1 Home Drinking Water Testing Kits 5pcs Independent Bag House Tap and Well Water Hardness Tester Lead Test Strips for Alkalinity pH Copper Nitrite&Chlorine**Qteeyou**$9.15**137 rev1y ago](https://www.amazon.com/dp/B0DR719X84) [**AAwipes 8-in-1 Aquarium Test Kit for Fish Tanks - Quick & Accurate Water Testing Strips for Aquariums & Ponds. Tests pH Ammonia Alkalinity Hardness Chlorine etc. (K02-50)**AAwipes**$9.79**3,120 rev2y ago](https://www.amazon.com/dp/B0D2RG3LXR) [**TESPERT Drinking Water Test Strips 125ct 16 in 1 30s Quick Screening for Hardness pH Iron Nitrite Copper Chlorine Nitrite Carbonate Lead Alkalinity...Well Tap Home City Water Testing**TESPERT**$18.12**3,161 rev4y ago](https://www.amazon.com/dp/B0BG63JJ3T) [**Hanna Instruments High Range Nitrate Checker HI782**Hanna Instruments**$64.26**714 rev5y ago](https://www.amazon.com/dp/B098H54LH5)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**SJ WAVE 22 in 1 Water Test Kits - 125 Strips Drinking Water Test Kit Home Tap and Well Water Tester for Bacteria pH Hardness Lead Iron Copper Chlorine Cyanuric Acid**SJ WAVE**$18.70**4.3★**▲ 118%**](https://www.amazon.com/dp/B07WNJJVKN) [**Hach 2745425 Nitrate and Nitrite Test Strips**HACH**$16.32**4.7★**▲ 93%**](https://www.amazon.com/dp/B00R3EQFDM) [**Lead Water Test Kit 2026 Upgraded 8 in 1 Home Drinking Water Testing Kits 5pcs Independent Bag House Tap and Well Water Hardness Tester Lead Test Strips for Alkalinity pH Copper Nitrite&Chlorine**Qteeyou**$9.15**4.5★**▲ 62%**](https://www.amazon.com/dp/B0DR719X84) [**TESPERT Drinking Water Test Strips 125ct 16 in 1 30s Quick Screening for Hardness pH Iron Nitrite Copper Chlorine Nitrite Carbonate Lead Alkalinity...Well Tap Home City Water Testing**TESPERT**$18.12**4.4★**▲ 56%**](https://www.amazon.com/dp/B0BG63JJ3T) [**All-New 23 in 1 Drinking Water Testing Kit 158 Strips Well Water Testing Kit & Water Test Strip for House Water for HardnessChlorine Copper Iron Lead pH and More**AESCULIX**$20.19**4.3★**▲ 45%**](https://www.amazon.com/dp/B0FMJT98YV)
**~~View all trending →~~**
## **What buyers say about nitrate test kit**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Ease Of Use**40%
*“Makes things easier”*
**Value For Money**13%
*“very affordable”*
**Quality-Overall**8%
*“Overall, a reliable and practical product that I would definitely recommend”*
**Water Resistance**8%
*“Easy and reliable water testing at home”*
**Color**7%
*“the color chart is very accurate”*
**Instructions/User Manual/Troubleshooting**6%
*“easy instructions”*
**Measurement/Reading Accuracy**5%
*“So far, they seem accurate and consistent”*
**Advertised Vs Actual Product**3%
*“Works as advertised”*
**Filtration**2%
*“It helps to change the filters on time”*
**Efficiency**1%
*“Works well”*
### **What buyers complain about **
**Functionality-Overall**15%
*“Does NOT detect Ammonia”*
**Ease Of Use**9%
*“Hard to use”*
**Color**9%
*“Color matching a little difficult”*
**Measurement/Reading Accuracy**8%
*“Inaccurate, random results”*
**Value For Money**8%
*“This checker is a bit expensive”*
**Advertised Vs Actual Product**8%
*“False advertisement”*
**Smell**5%
*“Chemical smell”*
**Quality-Overall**5%
*“Cheap and came with a lot of strips”*
**Contamination**4%
*“I realized that theres too much chemicals in my tap water”*
**Defective Material/Parts**4%
*“It must be a manufacturing defect”*
### **Top return reasons **
**Functionality-Overall**30%
**Advertised Vs Actual Product**21%
**Value For Money**8%
**Color**8%
**Product Condition**5%
**Measurement/Reading Accuracy**5%
**Defective Material/Parts**5%
**Certifications**4%
**Ease Of Use**3%
**Instructions/User Manual/Troubleshooting**2%
## **Common questions**
- **Is nitrate test kit profitable to sell on Amazon United States?**
- The niche generates $114K/yr across 13 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is +43.5%. Flapen's verdict: Worth a look (54/100).
- **How competitive is the nitrate test kit niche?**
- 12 brands and 68 sellers compete. The top 5 products take 76% of clicks and top 5 brands hold 81% of demand.
- **What do buyers complain about in nitrate test kit?**
- Top complaints mined from reviews: Functionality-Overall, Ease Of Use, Color. The return rate is 1.2%.
- **When does demand for nitrate test kit peak?**
- Demand peaks in Jun; the busiest month runs 2.8× the quietest.
- **What does it cost to enter the nitrate test kit niche?**
- Listings span $9.15–$64.26; the average listing price is $21.04 (sweet spot $15–$100). The average incumbent carries 2,008 reviews — the moat a new listing must climb.
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