At what temperature should the blank used for cleaning be digested in Ultra Low Range (ULR) iron method 10263?
Temperature for digesting ultra low range reaction tubes for 24 hours
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 .