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            首頁(yè)   >>   資料下載   >>   Moisture and ash determination in milk
            
		
            
	
            
        
            
        
            
	
            
				
            
					
            
						
            
						
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            Moisture and ash determination in milk
            
        			
            閱讀：597      發(fā)布時(shí)間：2015-05-14
        				
            
							
				
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        				  Suitable analyzers
            n TGA Thermostep
            Used accessories
            n Ceramic crucible (26063)
            n Spatula (23111)
            n Quartz sand (90840)
            Settings Step Moisture -------------> Step Ash
            n Temperature: 105°C 600°C
            n Speed: 0°C (= automatic) 0°C (= automatic)
            n Type: Stop by deviation Stop by deviation
            n Time: 0 sec 0 sec
            n Deviation: 0.001 0.001
            n Gas: Nitrogen Oxygen
            Formulas
            n Dry mass: 100 - ((X[0] - (X[1] - Y[1])) / X[0]*100)
            n Ash (as analyzed): (X[2] - Y[2]) / X[0]*100
            n Ash (dry base): (X[2] - Y[2]) / X[1]*100
            Procedure
            n Prepare and clean the ELTRA analyzer (e.g. remove ash from the
            crucibles)
            n Check pressure of the oxygen and nitrogen bottle
            n Prepare the application according to the recommended settings
            n Select this application in the TGA software; log in the sample names
            and fill approximay 1-2 g of quartz sand (90840) into the crucibles
            before the weight is taken by the internal balance
            n Set the option "Balance Button" to "Yes"
            n When the current crucible is placed on the pedestal fill in approximay
            1 g of sample
            n Remove the crucible carefully from the TGA carousel and mix the
            quartz with the sample (e.g. with a quartz tube or a small spatula)
            n Put the crucible back on the carousel and confirm the weight by
            pressing the balance button

            
                        
            
                            
            
                                
                                    
            
                                        
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                                        弗爾德（上海）儀器設(shè)備有限公司
                                        
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