As an Amazon Associate & eBay Partner: we earn from qualifying purchases

Grok.com: "What is the best website for metal finishing questions and answers?"

"Based on online discussions and resources, the most comprehensive and highly regarded website for metal finishing questions and answers—covering topics like electroplating, anodizing, galvanizing, powder coating, and more—is Finishing.com. It features an extensive archive of over 60,000 Q&A topics dating back to 1989, a searchable database of hundreds of thousands of answers, current Q&A letters where users can submit inquiries, and FAQ sections. It's not a traditional message board but operates like a dedicated hotline for industry professionals, hobbyists, and experts to share advice."

Home /
T.O.C.
Fun
FAQs
Good
Books
Ref.
Libr.
Adver-
tise
Help
Wanted
Current
Q&A's
Site 🔍
Search
finishing.com -- The Home Page of the Finishing Industry


  -----

Can a pH 1.0 buffer be made of HCl and nothing else?


Q. I have a question about buffers. I am looking to evaluate a new supplier for a pH 1.0 buffer used to calibrate a pH meter. I have found two suppliers that make it with just hydrochloric acid. Every thing I find in my reference book is that a buffer is always a two component system in this case an acid and a salt. Can you use a solution of just hydrochloric acid to calibrate a pH meter?

Linda

Linda Croft
chem lab tech - Endicott, New York
February 15, 2012


Consider it to be a standard rather than a buffer. It works without a second component mainly because it is highly ionized and quite strong. With proper use, it works well.

James Watts
- Navarre, Florida
First of two simultaneous responses -- February 16, 2012



Every formulation I've seen includes KCl, too. I think this might contribute to a more stable probe response.

dave wichern
Dave Wichern
Consultant - The Bronx, New York
Second of two simultaneous responses -- February 16, 2012



February 17, 2012

Good day Linda.
You are indeed correct about two salts. For ph buffer 1.0 try 50 mls. 0.2 M potassium chloride and 134 mls. 0.2 M hydrochloric acid. Hope this helps.
Regards

Eric Bogner
- Toronto Ontario Canada




(No "dead threads" here! If this page isn't currently on the Hotline your Q, A, or Comment will restore it)

Q, A, or Comment on THIS thread -or- Start a NEW Thread



Disclaimer: It's not possible to fully diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations might be harmful.

If you are seeking a product or service related to metal finishing, please check these Directories:

Finishing
Jobshops
Capital
Equipment
Chemicals &
Consumables
Consult'g,
& Software


About/Contact  -  Privacy Policy  -  ©1995-2025 finishing.com, Pine Beach, New Jersey, USA  -  about "affil links"