Shenzhen United Testing Technology Co., Ltd

Optical performance is a big index, it is composed of solar energy transmittance ,   solar reflectance, solar absorption rate, visible light transmission rate, visible light reflectance, total solar barrier rate, ultraviolet barrier rate, shielding coefficient, U-value and other small indicators. Light on paper, plastic, glass, metal and other materials show a normal reflection, but the amount of reflection is different. primary coverage: 1. refractive index 2 .   Dispersion and dispersion coefficient 3. Birefringence and very-optical refractive index 4 .   reflection and reflection coefficient 5. Full reflection 6. Absorption coefficient 7. Scattering General test: 1. Self-focus of light: A parallel intense beam enters the medium (similar to that through a convex lens). 2. Self-induction and transparency of light: After a short pulse of strong light enters the medium, the medium hardly absorbs its energy (almost transparent). 3. Optical bistability: After the strong ligh...

Composite salt spray test is also called cyclic corrosion test. Cyclic corrosion test (cct) is mainly used in the automotive industry, on the basis of constant salt spray test introduced the high temperature, humidity, low temperature, drying parameters, as far as possible to consider many factors in the natural environment, aims to achieve higher correlation with the natural environment test results. The purpose of the composite salt spray test is to confirm the ability of the objects to be tested to tolerate the salt spray environment, and to use the mutual circulation of salt spray and moisture to simulate the actual use environment. It is suitable to evaluate the electrochemical corrosion effect of metallic materials and salt particles. Composite salt spray test usually consists of three parts: salt spray test stage, moisture test stage and drying test stage. Salt spray test stage: Generally speaking, in addition to naCl, the electrolyte containing other chemicals can also be used ...

  Airbags require CE pyrotechnic instruction certification because they belong to pyrotechnic devices and involve chemical reactions and gas expansion. CE certification ensures that products meet European safety, health and environmental standards and is essential for access to the European market. This helps to ensure consumer safety, enhance manufacturers' responsibility and market trust, while ensuring that the environmental impact of the product is minimized.

Suitable for external lighting, signal devices and automotive lamp shell protection, can provide realistic analog electronic products and their components during the transportation and use of the spray test may be subjected to water and other environment, to detect the waterproof performance of various products. Common operation mode 1.Preparation: First, select a test device that can simulate the real rainfall conditions. A spraying system or spray device can be used to ensure a uniform and continuous flow of rainwater. 2.Sample preparation: Cut the material to be tested into the appropriate size, usually square or rectangular. Ensure that the edges of the sample are flat, with no obvious defects. 3.Install the samples: attach the sample to the device to ensure full level and withstand rain. 4.Adjust test parameters: adjust the operating parameters of the shower, such as flow and spray Angle. 5. Experimental: turn on the shower and start the experiment. Usually the experiment lasts fo...

The vibration test methods can be divided into sinusoidal vibration and random vibration: Sinusoidal vibration is often used in the laboratory test method, to simulate rotation, pulsation, shock (in ships, aircraft, vehicle, space aircraft) on the vibration and the resonance frequency analysis of product structure and little note to pick up card is given priority to, it is divided into two kinds of sweep vibration and fixed frequency vibration, the harsh degree depends on the frequency range, loss amplitude, test duration. Random vibration is assessed as the seismic resistance strength of the overall structure of the fire module product and the delivery environment in the packaging state, and its severity depends on the frequency range, GRMS, test duration and axial direction.

  AS / NZS 3112 Test Standard: AS/NZS 3112: 2017 The standard specifies the most basic safety requirements for Australian plugs and sockets with a rated ultra-low voltage of 32A for domestic and similar purposes. test item: 1. Terminal and internal connection and pin; 2. Insulation material, no removable plug; 3. Entry mode and wire buckle of the power supply cord; 4. Hand holding parts and internal connection; 5. Rating value and size of the low-voltage plug; 6. Ground connection mode and fuse; 7. Test of logo and plug; 8. Terminal and internal connection, no arrangement mode; 9. socket connecting piece, socket structure; 10. Size and grounding connection mode; 11. Prevent contact with live body and desktop installation socket; 12. Ground socket, socket with switch; 13. Test of outlets, marks and signs, and outlets with protective doors.

1. Electromagnetic compatibility (EMC): harassment power, radiation harassment, terminal harassment voltage, electrostatic discharge immunity, electromagnetic radiation immunity, conduction immunity, etc. 2, low voltage part (LVD): harmonic current, voltage fluctuation and flicker, current intensity, instantaneous voltage, etc.

The specific items of the food contact material testing of the juicer are as follows: 1. Stainless steel knife head test items: Total chromium 2. PP material test items: Specific gravity Melting point (only for PP) n-hexane extractives Xylene extractives

  EU Standard: EN60335-2-2:2003 + A1:2004 + A2:2006 EN60335-2-2:2010 + A11:2012 + A1:2013 Australian Standard: AS / NZS 60335.2.2:2010 + A1:2011 + A2:2014 + A3:2015 + A4:20 American standard: FCC certified pare15 International standard:   IEC60335-2-2:2002 + A1:2004 + A2:2006 IEC60335-2-2:2009 + A1:2012 + A2:2016 IEC60335-2-2:2019 Chinese standard: GB4706.7-2014 United Testing lab could meet the various national safety standards.

  -Valve-controlled lead-acid storage battery (IEC / EN60896 / GB19638) -Starting type lead-acid battery (IEC60095 / GB / T5008) -General-purpose battery pack (IEC / EN61056) -Traction storage battery (IEC/EN60254/GB/T7403.1-2008) -Nickel-metal hydrogen (cadmium) battery (IEC / EN61951 / GB22084) -Primary cell (IEC60086), etc

LVD electronic & electrical safety: EN 60598-1 EMC test standard: EN 55015  

  There are the following considerations: 1. The electromagnetic spectrum is limited The frequency band of each line has different functions. If each electronic product radiates disorderly electromagnetic waves, then thousands of electronic devices are launched, and the electronic devices of each frequency band will become extremely fragile (normal work will be disturbed at any time by other products). This is also designed to protect the normal operation of various electronic devices. 2. Safety factors For many products and industries, EMC's performance can mean life and death. Many medical, military, industrial (such as power products, financial equipment), aerospace and automotive products (and other products) must be kept safe. 3. Economic factors The electromagnetic interference of electronic equipment is u ndetectable and accidental. It is difficult to determine the cause and source of problems. There are a lot of lawsuits caused by wireless transmitters, so controlling them ...

IC is short for Industry Canada, as a government agency, responsible for the certification of electronic and electrical products into the Canadian market. Its products are roughly divided into radio and television equipment, information technology equipment, radio equipment, telecommunications equipment, engineering and medical equipment, etc. Similar to FCC in the United States, IC currently only restricts electromagnetic interference. www.uni-lab.hk/