National Certified Reference Material (NCRM)

Lus piav qhia luv luv:

Cov ntaub ntawv pov thawj ntawm Benzoic Acid (Calorimetric Standard) CRM tuaj yeem siv rau kev ntsuas tus nqi calorific hauv hluav taws xob, thee, kev lag luam tub rog, kev tshawb fawb tshawb fawb thiab lwm yam haujlwm.

Code:GBW (E) 136695

Batch Number:Xyoo 2021-01

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Product Detail

Khoom cim npe

Khoom taw qhia

Lub CRM yog siv rau kev txheeb xyuas / ntsuas ntawm oxygen foob pob calorimeter.Nws kuj yog siv rau kev ntsuam xyuas thiab kev txheeb xyuas qhov tseeb ntawm txoj kev tshuaj ntsuam xyuas.CRM tuaj yeem siv rau kev ntsuas tus nqi calorific hauv hluav taws xob, thee, kev lag luam tub rog, kev tshawb fawb thiab lwm yam haujlwm.

Kev Npaj Khoom Siv

Benzoic acid yog purified los ntawm distillation thiab purity yog 99.96%.Nws yog tsim rau hauv 0.5g ntsiav tshuaj thiab ntim rau hauv lub hwj yas huv.

Certified Values

Table 1. Certified Values for Benzoic Acid

Tus lej	Lub npe	Certified Tus Nqi * (J / g)	Tsis paub meej (J/g) (k=2)
GBW (E) 136695	Benzoic Acid	26456 ib	25

Txoj kev tsom xam

Lub foob pob calorimeter yog siv los ua cov ntsuas no.

Homogeneity Test thiab Stability Inspection

Nees nkaum lub raj mis raug xaiv los txiav txim siab qhov kev txiav txim ntsuas.Ib qho kev ntsuam xyuas cov qauv raug xaiv los ntawm txhua lub raj mis, thiab txoj kev yog lub foob pob calorimeter.Variance (F) xeem yog siv los ntsuas qhov sib xws ntawm CRM, thaum Fα, qauv yog homogeneous.

Daim ntawv pov thawj tas sij hawm: Daim ntawv pov thawj ntawm CRM no siv tau txog thaum Lub Ob Hlis 1, 2031.

Packing Thiab Cia

Cov ntaub ntawv pov thawj siv tau ntim rau hauv lub raj mis yas nrog lub hau yas.Qhov hnyav hnyav yog li 35g txhua lub raj mis.Nws raug nquahu kom ua kom qhuav thaum khaws cia.