Does Hach sell a sulfide standard or can one be prepared?

Document ID

Document ID TE4390

Published Date

Published Date 05/06/2017
Question
Does Hach sell a sulfide standard or can one be prepared?
Summary
Sulfide standard
Answer
For Method 8131 a premade standard is not available for purchase. The reason Hach does not sell one is because sulfide standards are unstable and the shelf life would be short. Standard Methods 4500-S2- lists sulfide standard preparation instructions:

-Take 3.725 Na 2 S*9H 2 O diluted to a final volume of 500 mL. This will give a stock solution of which 1mL = 1.00 mg/L S 2-.

Was this answer helpful?

Submitting...
Thank you for your feedback!
There was an error with your submission. Please try again.