China Phyzii Crm Manufacturer – National Certified Reference Material (NCRM) – Shandong Institute of Metallurgical Science
China Phyzii Crm Manufacturer – 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.
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We always continually provide you with the most conscientious customer service, and the widest variety of designs and styles with finest materials. These efforts include the availability of customized designs with speed and dispatch for China Phyzii Crm Manufacturer – National Certified Reference Material (NCRM) – Shandong Institute of Metallurgical Science , The product will supply to all over the world, such as: San Diego, Finland, Miami, Our company's main items are widely used all over the world; 80% of our products and solutions exported to the United States, Japan, Europe and other markets. All stuff sincerely welcome guests come to visit our factory.
By Anna from Philadelphia - 2018.06.03 10:17
We have been engaged in this industry for many years, we appreciate the work attitude and production capacity of the company, this is a reputable and professional manufacturer.
By trameka milhouse from Toronto - 2017.09.29 11:19
