1.1 These test methods cover the sampling and chemical analysis of solid natural rubber in the forms supplied to the rubber industry. 1.2 The analytical procedures appear in the following order: 1.3 The values stated in SI units are to be regarded as the standard. The values in parentheses are for information only. 1.4 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.                          
                          
                          
                            
                                
                                    
                                        Số hiệu tiêu chuẩn
                                        ASTM D 1278a
                                     
                                    
                                        Tên tiêu chuẩn
                                        Standard Test Methods for Rubber from Natural Sources - Chemical Analysis
                                     
                                                                        
                                        Ngày phát hành
                                        1991-00-00
                                     
                                                                        
                                    
                                    
                                    
                                    
                                    
                                    
                                        Từ khóa
                                        Ash * Carbon black * Chemical analysis and testing * Contamination * Copper * Copper content * Dirt * Iron * Iron content * Manganese * Natural rubber * Nitrogen * Processes * Rubber * Synthetic rubber * Testing * Volatile matter * Procedures * Methods