Steel And Alloy Supplier – National Certified Reference Material (NCRM) – Shandong Institute of Metallurgical Science
Steel And Alloy Supplier – 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:
"Sincerity, Innovation, Rigorousness, and Efficiency" is the persistent conception of our company for the long-term to develop together with customers for mutual reciprocity and mutual benefit for Steel And Alloy Supplier – National Certified Reference Material (NCRM) – Shandong Institute of Metallurgical Science , The product will supply to all over the world, such as: London, Comoros, Zurich, Our company always provides good quality and reasonable price for our customers. In our efforts, we already have many shops in Guangzhou and our products have won praise from customers worldwide. Our mission has always been simple: To delight our customers with best quality hair products and deliver on time. Welcome new and old customers to contact us for the future long term business relationships.
By Margaret from Israel - 2018.08.12 12:27
Hope that the company could stick to the enterprise spirit of "Quality, Efficiency, Innovation and Integrity", it will be better and better in the future.
By Alexandra from Hungary - 2017.08.15 12:36
