Crm Manufacturers – National Certified Reference Material (NCRM) – Shandong Institute of Metallurgical Science
Crm Manufacturers – National Certified Reference Material (NCRM) – Shandong Institute of Metallurgical Science Detail:
The CRM is used for the verification/calibration of oxygen bomb calorimeter. It is also used for the evaluation and verification of accuracy of the analytical methods. The CRM can be used for calorific value measurement in electric power, coal, military industry, scientific research and other fields.
Benzoic acid is purified by distillation and the purity is 99.96%. It is made into about 0.5g tablets and packed in clean plastic bottles.
Table 1. Certified Values for Benzoic Acid
|
Number |
Name |
Certified Value* (J/g) |
Uncertainty (J/g) (k=2) |
|
GBW（E）136695 |
Benzoic Acid |
26456 |
25 |
The bomb calorimeter is used to make these measurements.
Twenty bottles are randomly selected to determine the measurement order. An analysis specimen is selected from each bottle, and the method is the bomb calorimeter. Variance (F) test is used to evaluate the uniformity of the CRM, when the F<Fα, sample are homogeneous.
Expiration of certification: The certification of this CRM is valid until February 1, 2031.
The certified reference material is packed in plastic bottles with plastic covers. The net weight is about 35g each bottle. It is suggested to keep dryness when stored.
Product detail pictures:
Related Product Guide:
Our corporation puts emphasis about the administration, the introduction of talented staff, plus the construction of team building, attempting hard to improve the quality and liability consciousness of team members. Our organization successfully attained IS9001 Certification and European CE Certification of Crm Manufacturers – National Certified Reference Material (NCRM) – Shandong Institute of Metallurgical Science , The product will supply to all over the world, such as: Curacao, Bhutan, Montpellier, Our domestic website's generated over 50, 000 purchasing orders every year and quite successful for internet shopping in Japan. We would be happy to have an opportunity to do business with your company. Looking forward to receiving your message !
By Christine from Jamaica - 2018.12.22 12:52
Adhering to the business principle of mutual benefits, we have a happy and successful transaction, we think we will be the best business partner.
By Sabina from Karachi - 2017.02.28 14:19
