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
1.0 Count

🌈Color-coded chart for easy reading

📊Test range 0-200 ppm chlorine

🧪100 strips per bottle

€ 9.49

Duties & taxes included

In stock

Sold byAmazon IrelandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🧴 Stay ahead of sanitation with every strip – don’t let your standards slip!

BULK TESTING POWER - 100 precision strips in one bottle keep you ready for any sanitation check.
WIDE DETECTION RANGE - Accurately measures chlorine from 0 to 200 ppm, covering all bleach-based sanitizer needs.
TRUSTED BRAND QUALITY - Krowne’s reliable litmus paper technology guarantees consistent, professional-grade results.
INSTANT VISUAL FEEDBACK - Color-coded chart ensures quick, foolproof chlorine level readings every time.
POOL SANITATION ESSENTIAL - Perfect for maintaining safe, clean swimming pools and bleach sanitizer solutions.

Krowne S25-123 Chlorine Test Strips provide 100 high-quality litmus paper strips per bottle, designed for precise measurement of chlorine levels in bleach-based sanitizers and swimming pools. Featuring a user-friendly color-coded chart and a broad detection range of 0-200 ppm, these strips deliver fast, reliable results to ensure optimal sanitation and safety.

Specifications

ASIN	B003Z9HWQ8
Best Sellers Rank	#264,252 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #246 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 Kilograms
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	1.0 Count

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