or Create a profile
24 Jul, 2015 12:40 AM
In the article on this site, Water Analysis: Dissolved Carbon Dioxide (CO2), what concentration of sodium hydroxide solution should be used?
The method I am using is
Fill the mixing bottle to the 23- ml mark with the water sample
Add one drop of the phenophthalein indicator solution to the sample.
Add the sodium hydroxide solution drop by drop to the sample. Count each drop as it is added. Swirl the bottle to mix after each drop is added. Continue adding drops until a light pink color forms, and persists for 30 seconds.
Each drop of sodium hydroxide solution used equals 1.25 mg/l carbon dioxide.
Formatting help /
(switch to plain text)
(switch to Markdown)
You can attach files up to 10MB
If you don't have an account yet, we need to confirm you're human and not a machine trying to post spam.
A conversation has been started with the BioWorld staff to resolve this discussion.
This discussion is private.
Only you and BioWorld support staff can see and reply to it.
This discussion is public. Everyone can see and reply to it.
You can use Command ⌘ instead of Control ^ on Mac
Powered by Tender™.