Belt scale identification procedure
As we all know, the identification procedure of the belt scale is very important. Every detail has been discussed and reviewed. It is necessary to have a deep understanding to help the belt scale work in the future. Below, Xiaobian on the belt scale identification procedures for everyone to explain.
Nowadays, the appraisal procedures for belt scales shared by Xiaobian are applicable to various strategic accumulative metering belt scales for installation, in use and after repair. The belt scale is a meter that is installed in the proper position of the belt conveyor to automatically perform fast, continuous, and cumulative weighing on bulk materials. The belt scale weighing system consists of four parts: the weighing frame, the load cell, the speed sensor and the weighing indicator controller. The post-flow process is generally as follows:
1.1 verification
For the performance, determine whether it meets all the work required by the statutory requirements.
1.2 First verification
Verification of scales that have never been calibrated.
Note: The first verification includes: new manufacturing, new installation verification.
1.3 subsequent verification
Verification after the first verification.
Note: Subsequent verifications include:
a cycle check:
b Repair after repair:
c Newly applied to the use of mandatory verification of the scale before use of the test:
d period verification is valid until the previous period. This test is usually based on the requirements of the unit or user being inspected.
1.4 In-use inspection
Verify that the scale in use meets the requirements of the metrological verification procedure: Is it in good working condition: use
Is it correct and reliable? Usually the in-use test is a supervised test.
We are here today. Since belt scales are generally outdoors, it is more important to be exposed to the sun and rain, regardless of the heat and cold winter. I hope everyone will remember.
Nucleic Acid (DNA/RNA) Extraction Kit
1. Introduction
The total viral nucleic acid extraction kit is suitable for extracting total viral nucleic acid from serum, plasma, tissue homogenate and other samples. The kit is based on silica column purification technology, which eliminates the need for toxic phenol-chloroform extraction and time-consuming alcohol precipitation. This product has successfully extracted nucleic acids from hepatitis B A/C, hepatitis C, and norovirus standard. The obtained DNA/RNA can be directly used in a series of downstream experiments such as PCR, RT-PCR, and LAMP.
Notice:
1. The carrier RNA solid must be dissolved in Nuclease Free Water to 1µg/µl before use, and vortex to dissolve. Store in aliquots at -70°C. If you need to store it at -20℃ for a long time, please repackage it according to the number of times of use.
2. Dissolve Proteinase K (20mg/ml): Add Proteinase Dissolve Buffer to dissolve Proteinase K to a final concentration of 20mg/ml. Proteinase K dry powder can be stored at 2-8°C for one year, but dissolved Proteinase K must be stored in aliquots at -20°C. Repeated freezing and thawing of Proteinase K can affect its activity.
3. Buffer VHB must be diluted with 14 ml absolute ethanol before use and stored at room temperature.
4. Buffer RW2 must be diluted with 80 ml of absolute ethanol before use and stored at room temperature.
3. Shelf life
Except for Proteinase K and Carrier RNA, other components of this product can be stored at room temperature (15-25°C) for 12 months, and should be stored at 2-8°C for long-term storage. Proteinase K and Carrier RNA dry powder are transported at room temperature. Please store at -20°C after receiving the test product, and store at -20°C after dissolving.
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Jilin Sinoscience Technology Co. LTD , https://www.contoryinstruments.com