China Anthracite Coke Factory – National Certified Reference Material (NCRM) – Shandong Institute of Metallurgical Science

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China Anthracite Coke Factory – 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<F_α, 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.

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With reliable quality process, good reputation and perfect customer service, the series of products produced by our company are exported to many countries and regions for China Anthracite Coke Factory – National Certified Reference Material (NCRM) – Shandong Institute of Metallurgical Science , The product will supply to all over the world, such as: Dominica, Costa Rica, Panama, We hope we can establish long-term cooperation with all of the customers, and hope we can improve competitiveness and achieve the win-win situation together with the customers. We sincerely welcome the customers from all over the world to contact us for anything you need!Welcome all customers both at home and abroad to visit our factory. We hope to have win-win business relationships with you, and create a better tomorrow.

904l Stainless Steel