Значение и использование

The accuracy of many analytical measurements is dependent upon the manner in which the standard solutions are prepared and stored, and the accuracy with which they are standardized. Combining the methods recommended for the preparation and handling of such solutions into one practice eliminates the necessity for covering such details in all of the methods wherein the solutions are used.

Область применения

1.1 This practice covers procedures for the preparation, standardization, and storage of the standard volumetric solutions and reagent testing solutions commonly used in chemical analysis.

1.2 The information in this practice is arranged as follows:

SectionsReferenced Documents2Terminology3Significance and Use4Apparatus5Temperature effects6Measurements7Reagents8Concentration of solutions9Mixing of solutions10Storage of solutions11Preparation and standardization of solutions12Precision and Bias13Sodium hydroxide solution, 0.02 to 1.0 N 14 to 19Hydrochloric acid, 0.02 to 1.0 N20 to 28Sulfuric acid, 0.02 to 1.0 N29 to 33Hydrochloric acid, special 1 N34 to 38Sulfuric acid, special 1 N39 to 43Silver nitrate solution, 0.1 N44 to 48Ammonium thiocyanate solution, 0.1 N49 to 53Iodine solution, 0.1 N54 to 58Sodium thiosulfate solution, 0.1 N59 to 63Potassium permanganate solution, 0.1 N 64 to 68Potassium dichromate solution, 0.1 N69 to 73Methanolic sodium hydroxide solution, 0.5 N 74 to 79Ceric sulfate solution, 0.1 N80 to 84Acetous perchloric acid, 0.1 N85 to 89Disodium ethylenediaminetetraacetate solution, 0.05 M90 to 94Standard ion solutions95Nonstandardized reagent solutions and indicator solutions96

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Specific warning statements are given throughout this practice.