At what temperature should the blank used for cleaning be digested in Ultra Low Range (ULR) iron method 10263?

Document ID

Document ID TE5321

Version

Version 3.0

Status

Status Published

Published Date

Published Date 09/18/2018
Question
At what temperature should the blank used for cleaning be digested in Ultra Low Range (ULR) iron method 10263?
Summary
Temperature for digesting ultra low range reaction tubes for 24 hours
Answer
Method 10263 for ultra low range Iron analysis states, "Before first use, clean the 20-mm reaction tubes. To clean the reaction tubes, add a blank solution (deionized water and reagent) to each reaction tube and digest for 24 hours. Use these reaction tubes only for this procedure. Keep a blank solution in the reaction tubes during storage."   The temperature that should be used for this procedure is 135 °C .
 

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