what is the actual range of chlorine that it tests for? it shows some ambiguous numbers, but what are the units of those numbers?

It ranges from 10,50,100,and 200 P.P.M (Parts Per Million) Available Chlorine

Will this test fro strength of HOCl

No idea. They are test strips that turn color to meet a PH Level.

How do you test chlorine in a pool with these strips? When I try strip stays white.

This is not used for testing chlorine in a pool. It is more used more testing the bleach mixture in your #3 cleaning solution like in a spray bottle.(100-200ppm). That will sanitize the clean areas, dishes, toys etc. Amazon has great Pool Testing Equipment kits and so on. Search for that.

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Krowne S25-123 Chlorine Test Strips, 1-Pack

Product ID: 7325891

Details

Brand
Krowne
Manufacturer
Krowne
Ph Range
7.2-7.6
Recommended Uses For Product
Chlorine in
Unit Count
1 Count

🌈Color-coded chart for easy reading

📊Test range 0-200 ppm chlorine

🧪100 strips per bottle

131 kr

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Description

🧴 Stay ahead of the clean game with Krowne’s chlorine test strips—because your space deserves precision.

BULK TESTING POWER - 100 precision strips in one bottle keep your pool or sanitizer in check without constant reordering.
WIDE DETECTION RANGE - Measures chlorine levels from 0 to 200 ppm, covering all your bleach-based sanitizer needs with confidence.
TRUSTED BRAND QUALITY - Krowne’s reliable litmus paper technology delivers consistent, professional-grade results every time.
POOL SANITIZER READY - Specifically designed for bleach-based solutions, perfect for pools, spas, and commercial sanitizing.
INSTANT VISUAL FEEDBACK - Color-coded chart ensures you get accurate chlorine readings at a glance—no guesswork, no delays.

Krowne S25-123 Chlorine Test Strips provide 100 high-quality litmus paper strips per bottle, designed for accurate testing of bleach-based sanitizer solutions. Featuring a user-friendly color-coded chart and a broad detection range of 0-200 ppm, these strips ensure precise chlorine level monitoring for pools, spas, and commercial sanitizing applications.

Specifications

ASIN	B003Z9HWQ8
Best Sellers Rank	#203,503 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #205 in Swimming Pool Test Strips
Brand Name	Krowne
Customer Reviews	4.3 4.3 out of 5 stars (345)
Global Trade Identification Number	00822196251239, 00822196951238
Included Components	Test Strips
Item Type Name	Test Strips
Item Weight	0.01 kg
Manufacturer	Krowne
Material Type	Litmus Paper
Model Number	S25-123
Part Number	S25-123
Recommended Uses For Product	Chlorine in Swimming Pool Water
Sterility Rating	7.2-7.6
UPC	822196251239 671875507323 822196951238 123456000056
Unit Count	1 Count

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131 kr

Duties & taxes included

In stock

Sold byAmazon DenmarkDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Denmark.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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