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 Chlorine Test Strips, 100 Piece

Product ID: 385540420

Details

Brand
Krowne
Global Trade Identification Number
Recommended Uses For Product
chlorine
UPC
822196251239

CI$19

Duties & taxes included

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Details

Brand
Krowne
Global Trade Identification Number
Recommended Uses For Product
chlorine

Description

Krowne Chlorine Test Strips, 100 Piece : desertcart.in: Health & Personal Care

Specifications

ASIN	B003Z9HWQ8
Best Sellers Rank	#590,593 in Health & Personal Care ( See Top 100 in Health & Personal Care ) #46 in Ketone Test Strips
Brand Name	Krowne
Customer Reviews	4.4 4.4 out of 5 stars (341)
Global Trade Identification Number	00822196251239, 00822196951238
Item Weight	0.1 Pounds
Manufacturer Part Number	S25-123
Model Number	S25-123
Recommended Uses For Product	chlorine
UPC	822196251239 671875507323 822196951238 123456000056

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