I-National Certified Reference Material (NCRM)

National Certified Reference Material (NCRM) Featured Image

Incazelo emfushane:

I-Certified Reference Material ye-Benzoic Acid (I-Calorimetric Standard) I-CRM ingasetshenziselwa ukulinganisa inani le-calorific emandleni kagesi, amalahle, imboni yezempi, ucwaningo lwesayensi neminye imikhakha.

Ikhodi:I-GBW (E) 136695

Inombolo yeqoqo:2021-01

Thumela i-imeyili kithi

Imininingwane Yomkhiqizo

Omaka bomkhiqizo

Isingeniso somkhiqizo

I-CRM isetshenziselwa ukuqinisekiswa/ukulinganisa kwekhalorimitha yebhomu le-oxygen.Iphinde isetshenziselwe ukuhlola nokuqinisekisa ukunemba kwezindlela zokuhlaziya.I-CRM ingasetshenziselwa ukulinganisa inani le-calorific emandleni kagesi, amalahle, imboni yezempi, ucwaningo lwesayensi neminye imikhakha.

Ukulungiswa Kwempahla

I-Benzoic acid ihlanzwa nge-distillation futhi ubumsulwa bungama-99.96%.Yenziwe ibe amaphilisi angaba ngu-0.5g futhi ifakwe emabhodleleni epulasitiki ahlanzekile.

Amanani Aqinisekisiwe

Ithebula 1. Amanani Aqinisekisiwe E-Benzoic Acid

Inombolo	Igama	Inani Eliqinisekisiwe* (J/g)	Ukungaqiniseki (J/g) (k=2)
I-GBW (E) 136695	I-Benzoic Acid	26456	25

Izindlela Zokuhlaziya

I-calorimeter yebhomu isetshenziselwa ukwenza lezi zilinganiso.

Ukuhlolwa Kwe-Homogeneity Nokuhlola Ukuzinza

Amabhodlela angamashumi amabili akhethwa ngokungahleliwe ukuze kunqunywe i-oda lokulinganisa.Isifanekiso sokuhlaziya sikhethwa ebhodleleni ngalinye, futhi indlela yi-calorimeter yebhomu.Ukuhlolwa kwe-variance (F) kusetshenziselwa ukuhlola ukufana kwe-CRM, lapho i-Fα, amasampula afanayo.

Ukuphelelwa yisikhathi kwesitifiketi: Isitifiketi sale CRM sisebenza kuze kube umhla ka-Februwari 1, 2031.

Ukupakisha Nokugcina

Izinto eziyisethenjwa eziqinisekisiwe zipakishwe emabhodleleni epulasitiki anezembozo zepulasitiki.Isisindo senetha singama-35g ibhodlela ngalinye.Kuphakanyiswa ukugcina ukoma lapho ugcinwe.