BAIJIAN - Third party testing organization
Stacking density is the unit volume mass measured after the free filling of dust or powder into a container. Stacking density of bed material ρ B and bed material density ρ The relationship between p is ρ B= ρ P (1- ε)ε Is the void fraction of the material at rest、 ρ B is the bulk density、 which needs to be measured、 ρ P is the true density、 which can be consulted in literature. Also known as bulk density、 bulk density、 or bulk density、 abbreviated as bulk density. The mass per unit volume of a granular material in a stacked state. Calculate as follows: ρ′ 0=m/V ′ 0、 where: ρ′ 0 is the bulk density、 kg/m3; M is the mass of the material in a certain container、 kg; V ′ 0 is the stacking volume of the material、 i.e. the volume loaded into the container、 m3、 which is the total volume including the gaps between particles and the internal pores of particles. The density calculated by natural stacking volume is called loose density; Calculated by the compacted volume、 it is called tap density. The stacking density is influenced by factors such as container size and filling method. The measurement should be carried out according to a certain method. Usually、 the test sample is allowed to fall freely and quantitatively through a funnel from a certain height (see figure). The density after loose filling is called the density of sparse filling. The density after dense filling is called the density of dense filling. In addition、 there are parameters such as compression rate、 filling rate、 and porosity. The stacking density and filling rate of powder are related to particle size、 distribution、 and shape、 with particle size distribution having a significant impact
Function of testing report:
1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report
2. Online e-commerce platform entry: Quality inspection report recognized by major e-commerce platforms 3. Used as a sales report: issuing legally effective testing reports to make consumers more confident 4. Papers and research: Provide professional personalized testing needs 5. Judicial services: providing scientific、 fair、 and accurate testing data 6. Industrial problem diagnosis: Verify the troubleshooting and correction of industrial production problemsinspection and testing process:
1. Telephone communication and confirmation of requirements
2. Recommend solutions and confirm quotations 3. Mail samples and arrange testing 4. Progress tracking and result feedback 5. Provide reports and after-sales service 6. If urgent or priority processing is requiredTesting and testing characteristics:
1. The testing industry is fully covered、 meeting different testing needs
2. Fully cover the laboratory and allocate localized testing nearby3. Engineers provide one-on-one services to make testing more accurate
4. Free initial testing、 with no testing fees charged
5. Self service order delivery for free on-site sampling
6. Short cycle、 low cost、 and attentive service 7. Possess authoritative qualifications such as CMA、 CNAS、 CAL、 etc 8. The testing report is authoritative and effective、 and is generally used in China