what is the shelf life of these strips?

If kept dry , I would say many many years. I use some that I have had for 5 years,and they are accurate( for a paper test strip).

Anybody try measuring ph of coffee?

4.8- 5.1 is the standard range for coffee

Can i use these to measure 300 ppm?

I used to test pH of saliva... basic, neutral or acidic- pH range 1.0 - 9.0. Nothing was provided to measure anything different, so I’m thinking NO.

Can you use this to test ph of liquid soap?

I do, I just plop a drop on a plate and add enough water to thin a bit. Then lay the strip on it.

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Pack of 2 PH 1-14 Test Paper Litmus Strips Tester, 80pcs Per Pack

Pack of 2 PH 1-14 Test Paper Litmus Strips Tester, 80pcs Per Pack

Product ID: 62974127

Details

Brand
Nerseki
Manufacturer
H&H Tech
UPC
674551784667

💧Tests various liquids

📏45mm x 7mm size

⏱️15s color change

Description

🌈 Test the Waters of pH with Confidence!

USER FRIENDLY - Clear English instructions ensure hassle-free usage.
VERSATILE USE - Perfect for testing soaps, juices, and even soil moisture.
INSTANT RESULTS - Color change in just 15 seconds for quick assessments.
PRECISION TESTING - Accurate pH range from 1-14 for diverse applications.
SATISFACTION GUARANTEED - 100% refund policy for peace of mind.

This pack of 2 PH 1-14 Test Paper Litmus Strips includes 80 strips designed for quick and accurate pH testing across a variety of substances, from liquids to soil. Each strip measures approximately 45mm x 7mm and provides results in just 15 seconds, with clear English instructions included. Enjoy the assurance of a 100% refund if the product does not meet your language expectations.

Specifications

ASIN	B075W6ZGHW
Brand	Nerseki
Brand Name	Nerseki
Customer Reviews	4.3 out of 5 stars 1,843 Reviews
Item Weight	14.74 g
Manufacturer	H&H Tech
Material Type	litmus paper
Model Number	ph4137
Number of Items	2
Part Number	ph4137
Ph Range	1-14
Recommended Uses For Product	ph Test
Sterility Rating	1-14
UPC	674551784667

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