What would I use to test if 3% H2O2 is still potent?

3% is 30,000 ppm, so NOT these 0-100 ppm test strips! You need Very High Level 2-10% test strips, which are available on Amazon.

While this product be able to measure a 7% solution of hydrogen peroxide?

This product will not be able to measure that high of a level of hydrogen Peroxide. What you should get instead is the Bartovation Food Grade Time Sensitive Very High Level Hydrogen Peroxide (h2o2) Test Strips, up to 10% Concentration (ASIN: B01CDX4ZB6). Those strips will help you know if your solution is approximately 7% because it will give you a reading in between 5% and 10%. Please let us know if you have any more questions or if there is anything else I can help you with! Best, Scott

How do i test 35% food grade hydrogen peroxide with your test strips. what ppm would i read on the container. what would i read if i reduced the 35%?

This product is designed to test residual (low level) peroxide, so, although it could be used to test food grade hydrogen peroxide, it would require a very precise dilution ratio that would be hard to achieve accurately. For testing food grade peroxide, I recommend using our "very high level" strip (https://www.amazon.com/dp/B01CDX4ZB6), where you would: mix 1 part 35% peroxide solution with 2.5 parts water to yield a concentration of 10%. If the color change is not immediate, then the initial concentration was not 35% (or a mistake was made in the dilution). Try other dilutions to zero in on the actual strength, e.g. 1:6 should give you 5%; etc.

I bought these for my pool, after putting 5 gallon of 35% h2o2 in a 25000 gallon pool water, the strip turns black, what does that mean?

As far as I recall the amount needed is 1 cup peroxide for every 250 gallons. Black is probably way higher than shades of blue that can register on strip; probably over 100 ppm.

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Bartovation Peroxide Test Strips, Low Level, 0-100 ppm [Vial of 100 Strips]

Bartovation Peroxide Test Strips, Low Level, 0-100 ppm [Vial of 100 Strips]

Product ID: 155818838

Details

Brand
Bartovation
Manufacturer
Bartovation
Number of items
1
Recommended uses for product
Testing levels
UPC
643845994921

💯100 strips per vial for long-term use

🔵Color change indicates peroxide level

⏱️Results in seconds

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Description

🔬 Stay ahead of water safety with instant, reliable peroxide testing!

VISUAL BLUE INDICATOR - Higher peroxide levels turn the strip a deeper blue, making it easy to interpret results at a glance.
WIDE SENSITIVITY RANGE - Calibrated from 0 to 100 ppm, covering all low-level peroxide concentrations for precise monitoring.
INSTANT PEROXIDE DETECTION - Get accurate peroxide readings in just seconds to ensure water safety without delay.
TRUSTED QUALITY ACCURACY - Made in the USA with premium materials, backed by a 4.7-star rating from hundreds of professionals.
BULK SUPPLY FOR CONSISTENCY - Vial of 100 strips means you’re always ready to test, perfect for regular pool, hot tub, or drinking water checks.

Bartovation Peroxide Test Strips provide fast, accurate detection of residual hydrogen peroxide in drinking water, pools, and hot tubs. Calibrated across a 0-100 ppm range, these strips deliver clear blue color changes within seconds, enabling easy and consistent monitoring. Each vial contains 100 high-quality strips made in the USA, trusted by professionals for reliable water safety management.

Specifications

ASIN	B01N49KQLQ
Best Sellers Rank	8,890 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 25 in pH Test Strips
Brand	Bartovation
Country Of Origin	USA
Customer Reviews	4.7 out of 5 stars 446 Reviews
Manufacturer	Bartovation
Manufacturer Part Number	PPX02V100-ML
Material	PE_(Polyethylene), PS_(Polystyrene)
Material Type	PE_(Polyethylene), PS_(Polystyrene)
Model Number	PPX02V100
Number of items	1
Recommended Uses For Product	Testing peroxide levels in drinking water, pools, and hot tubs
Recommended uses for product	Testing peroxide levels in drinking water, pools, and hot tubs
UPC	643845994921

Reviews

T**G

Seem to work perfectly

Does what it says - when using the test strips, the colours really match the printed packet.

13.04.2026

P**H

Tutto perfetto

Consegna veloce e prezzo qualita`ottimo!

25.10.2020

R**.

Works great with cold plunge

I use these strips to measure out the hydrogen peroxide in my cold plunge and they work very well.

1.07.2025

P**E

Works Great

We use these to test our hot tub and they are very accurate.

19.04.2025

A**A

Value

Work very good and as accurate as my original strips for less money

24.04.2026

K**N

Using to test peroxide levels in hot tub. They work!

I bought these to test the peroxide levels in our hot tub, which we're disinfecting with hydrogen peroxide rather than toxic chlorine.. They work really well.. I have a consistant reading between 50-100 ppm's, which is very good.. Just to make sure they work, I tested one in a glass of tap water and it didn't turn any color at all, which indicated to me that they are indeed giving an accurate reading. Price is very fair, too.

7.04.2018

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

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Received my product in pristine condition. Great service overall.

1 month ago

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