Virus Specimen Collection Tube Inspection principle: Virus Sampling Tube,Virus Specimen Collection Tube,Viral Transport Tube,Saliva Virus Sampling Kit Jilin Sinoscience Technology Co. LTD , https://www.jlgkscience.com
It can perform protein denaturation on fresh clinical virus samples to inactivate the virus, prevent secondary transmission of infection, and ensure the safety of transportation and testing personnel.
♣.Structural composition: Combination of cotton swab and transport medium (VTM).
♣. Product requirements:
The product should be airtight, avoid high temperature, avoid direct sunlight storage. It should be used in a clean, hygienic, pollution-free, and temperature-friendly environment.
♣, Storage conditions and validity period:
â‘ , the product should be stored in a clean, dry and ventilated environment,
②, the temperature is 5℃-35℃;
â‘¢, relative humidity <85%RH;
â‘£, product shelf life: 12 months.
♣. How to use
â‘ Before sampling, mark relevant information on the label of the sampling tube.
â‘¡. Sampling with the corresponding cotton swabs.
â‘¢ After the collection is completed, quickly put the cotton swab into the collection tube, break the part higher than the sampling tube, and tighten the tube cover.
â‘£. For the specific sampling method, please refer to the following:
a) Nasal swab Gently insert the sampling head into the nasal cavity, stop for a while and then slowly rotate to exit, immerse the collected specimen in the Xiangxiang solution, break the excess part and discard it, and tighten the sampling tube cover.
b) Pharyngeal swab: Wipe bilateral pharyngeal tonsils and posterior pharyngeal wall with the sampling head, immerse the collected specimen in the sampling solution, break off the excess part and discard it, and tighten the cap of the sampling tube.
c), Mycoplasma Chlamydia, Ureaplasma specimen collection
Male: Insert the sampling head into the urethra about 2cm and rotate, stay for a while and then exit, and immerse the collected specimen in the sampling solution.
Female: Wipe the mucus of the cervical orifice, insert the sampling tip into the cervical canal for 1-2 cm for sampling, immerse the collected specimen in the sampling solution, break off the excess part and discard it, and tighten the cap of the sampling tube.
♣. Precautions
1. After the virus is collected, the disposable sampling swab should be completely inserted into the preservation solution, so that the virus can be retained to the greatest extent possible.
â‘¡ The collected specimens must be sent for inspection in time.
â‘¢. It is forbidden to use products with damaged packaging and expired validity period to prevent pollution.
This single-use Virus Sampling Tube is used for in vitro diagnosis. It cannot be used for human or animal oral or external use. If swallowed, it may cause serious events; it is irritating to eyes and skin. If it is not splashed into the eyes, rinse with water.
Lithium battery evaluation test project
**Lithium Battery Evaluation Test Projects**
**Definition**
- **Fully Charged**: A battery is considered fully charged when it meets the manufacturer's specified capacity under the recommended charging conditions (including current, voltage, temperature, and time). The battery should be used within one week after being fully charged.
- **Complete Discharge**: A battery is completely discharged when it is discharged according to the manufacturer’s recommended discharge conditions (current, temperature, etc.) until the specified discharge voltage is reached. The battery should be used within one week after being fully discharged.
- **Just Finished Battery**: A battery that has been produced less than one month ago and has undergone fewer than XX charge-discharge cycles.
- **Battery Cycle**: A cycle refers to a continuous process of charging and discharging the battery under the manufacturer’s recommended conditions until its calculated capacity drops by 40% to 60%.
- **Indoor Temperature**: In testing, room temperature refers to 20±5°C, which is typical for normal environmental conditions during tests.
- **Explosion**: An explosion refers to an internal rupture or external damage caused by the battery’s casing cracking.
- **Fire**: Fire is defined as spontaneous combustion or burning inside the battery.
- **Safety Valve Operation**: This occurs when the battery releases internal pressure through its safety valve during normal use.
- **Deformation**: Deformation refers to visible changes in the battery’s shape due to internal or external pressure.
**Evaluation Test Projects**
**(1) Electrical Tests**
- **External Short Circuit**: Fully charged, just-finished batteries are subjected to a short circuit at 60°C. The resistance should be less than 50mΩ. The battery must not explode or catch fire for more than 6 hours.
- **Forced Discharge**: Fully charged, just-finished batteries are discharged to 250% of their rated capacity under manufacturer-recommended conditions. If safety mechanisms activate, the test can be stopped without explosion or fire.
- **Continuous Charging and Discharging**: Fully charged, just-finished batteries are continuously charged and discharged at room temperature for 28 days. No explosion, fire, or cracks should occur.
- **Overcharge Test**: Fully charged, just-finished batteries are overcharged to 250% of their rated capacity. If safety functions are triggered, the test may stop early without explosion or fire.
- **High-Current Charging**: Fully charged, just-finished batteries are charged at three times the manufacturer-recommended current until reaching over 100% of their rated capacity. No explosion or fire should occur.
**(2) Mechanical Performance Tests**
- **Vibration Test**: Fully charged or discharged, just-finished batteries are vibrated in three directions (X, Y, Z) at 0.8mm amplitude and 10Hz frequency for 100 minutes. After testing, the battery should be fully charged and show no explosion, fire, or deformation.
- **Acceleration Test**: Fully charged or discharged, just-finished batteries are subjected to 75g acceleration for 3 seconds, with a peak of -175g. After testing, the battery should be fully discharged and show no explosion, fire, or deformation.
- **Drop Test**: Fully charged or discharged, just-finished batteries are dropped from 1.9 meters onto concrete 10 times. No explosion or fire should occur.
- **Nail Penetration Test**: Fully charged, just-finished batteries are pierced with a nail (2.5–5mm diameter) through the center axis for 6 hours. No explosion or fire should occur.
- **Crush Test**: Fully charged, just-finished batteries are compressed between two flat plates with a force of 13kN. No explosion or fire should occur.
- **Impact Test**: Fully charged, just-finished batteries are struck by a 9.1kg weight falling from 61cm. No explosion or fire should occur.
- **Water Drop Test**: Fully charged, just-finished batteries are dropped from 10 meters into water on muddy ground. No explosion or fire should occur.
**(3) Environmental Performance Tests**
- **High-Temperature Storage**: Fully charged, just-finished batteries are stored at 100°C for 5 hours, then cooled to 20°C for 24 hours. No explosion or fire should occur.
- **Thermal Shock Test**: Fully charged, just-finished batteries undergo 10 thermal cycles between -20°C and 60°C. No explosion, fire, damage, or deformation should occur.
- **Low-Pressure Test**: Fully charged, just-finished batteries are placed in an environment with absolute pressure ≤ 11.6kPa for 6 hours. No explosion or fire should occur.
- **Heat Aging Test**: Fully charged, just-finished batteries are heated at 5°C/min up to 130°C and left for 60 minutes. No explosion or fire should occur.
- **Water Immersion Test**: Fully charged, just-finished batteries are submerged in water at room temperature for 24 hours. No explosion, fire, or damage should occur.