Among the textile testing equipment, the insolation color fastness tester is relatively conventional, and it is also one of the most concerned of color fastness testing. This testing project is not difficult, but in the practical process, often encountered a variety of problems. Here we will analysis the common problems about national standard, ISO and AATCC color fastness test standard, for your reference. 1.What is the difference between blue wool sample 1-8 and L2-L9? Are they interchangeable? In GB/T 8427 and ISO 105 B02 standard, the blue wool samples 1-8 and L2-L9 have described in detail. They are all made of wool with 8 grades of blue label,The light fastness of each blue label is approximately twice that of the previous one. But they use different dyes and processes. Blue label 1-8 is dyed with eight dyes with different light fastness. Applicable to European exposure conditions specified in GB/T8427 and ISO105 B02 standard. L2-L9 is a kind of raw fiber dyed with two dyes, and the dyed two fibers are made into L2-L9 in different proportions. Applicable to us exposure conditions specified in GB/T8427 and ISO 105 B02 standard. And it is applicable to AATCC TM 16 standard. Therefore, blue label 1-8 and  L2-L9 cannot be mixed, and the test results cannot be exchanged. 2.The light color fastness tester has the relative humidity in the chamber, why is it necessary to calibrate the humidity control standard sample? At present, most of the light color fastness tester can display the relative humidity in the chamber. However, in GB/T 8427 and ISO 105 B02 standard, the humidity in the cabinet is calibrated daily using the humidity control standard. The reason is that the relative humidity in the chamber is not the "relative humidity", but the "effective humidity". Effective humidity is also called the absolute humidity. It is combining the air temperature, the surface temperature of the sample and the relative humidity of the air that determines the moisture content of the sample surface during the exposure process. "Effective humidity" directly affects the light fastness test results of humidity sensitive samples. So GB and ISO standards stipulate that the humidity in the chamber should be checked every day. The humidity control sample is cotton fabric dyed with red azo dye. The use method is as follows: A.Taking A piece of humidity control cloth(no less than 45×10mm) and blue wool standard sample be mounted on a cardboard and placed in the middle of the sample clip as far as possible. B. Expose partially covered humidity control samples and blue wool samples at the same time until the color difference between the exposed and unexposed parts of the humidity control samples reaches level four. C. At this time, the standard blue wool sample is used to evaluate the color difference between the humidity control cloth and the standard blue wool sample of which grade. For example, under the general condition of European standard insolation conditio...

On March 29, 2019, the Hong Kong Official Gazette published the revised Notice of the Toys and Children's Products Safety Regulations, updating the product safety standards in Schedule 1 and Schedule 2. The Ordinance stipulates that no one shall manufacture, import or supply toys or children's products that do not meet the safety standards specified in Schedule 1 or 2. 1. Schedule 1 amended: Repealed  ISO 8124-1: 2014 by ISO 8124-1: 2018; Repealed ISO 8124-1: 2014 by ISO 8124-4: 2014 (A1: 2017); Repealed BS EN 71-3: 2013 + A1: 2014 by BS EN 71-3: 2013 + A3: 2018; Repealed BS EN 71-7: 2014 by BS EN 71-7: 2014 + A2: 2018; Repealed BS EN 71-8: 2011 by BS EN 71-8: 2018; Repealed BS EN 71-14: 2014 by BS EN 71-14: 2014 + A1: 2017. 2.  Schedule 2 amended: Children’s fence: Subtitule ASTM F1004-18 for ASTM F1004-16b; Children´s Cots and Folding Cots for Domestic Use: Subtitute BS EN 716-1: 2017 for BS EN 716-1: 2008 + A1: 2013; subtitute BS EN 716-2: 2017 for BS EN 716-2: 2008 + A1: 2013; Children’s high chairs: Subtitute BS EN 14988: 2017 for BS EN 14988-1: 2006 + A1: 2012 and subtitute BS EN 14988-2: 2006 + A1: 2012; ASTM F404- 18 for  ASTM F404-17; Children paints: repealed BS EN 71-3: 2013 + A1: 2014 by BS EN 71-3: 2013 + A3: 2018; Children’s fence: Substitute ASTM F406-17 for  ASTM F406-15. The new revison will become official on the 1st October 2019.

On April 2019, the European Committee for Standardization (CEN) published a new version of European standard EN 71-3:2019, Safety of toys - Part 3: Migration of certain elements. This standard will be given the status of a national standard and the conflicting national standards will be withdrawn by October 31, 2019 at the latest. The current harmonized standard for the migration of specific elements of the EU Toy Safety Directive is EN 71-3:2013+A3:2018. But EN 71-3:2019 is expected to be harmonized under the Toys Safety Directive (2009/48/EC) when accepted by the European Commission (EC) and published in the Official Journal of the European Union (OJEU).

According to the statistics of World Health Organization (WHO), flame burns are the 11th cause of death and 12th cause of disease in children aged 5-14 years worldwide. And, the textiles with flame retardant function has become the focus of attention. So what is the flame retardant properties of textiles? Material burning performance The "flame retardancy" does not mean that the textile after flame retardant finishing will not burn when it contacts the source, but for the fabric can reduce its flammability as much as possible in the fire, slow down the spread speed, and does not form large-area combustion. And after leaving the flame, it can quickly extinguish itself, no longer burning or smoldering. Those protective fabrics that prevent themselves from being ignited or that slow down and terminate combustion after exposure to flames or hot objects are flame retardant fabrics. Classes of flame retardancy of fabrics (1) fiber flame retardant: direct production of flame retardant fiber or flame retardant fiber with high temperature fabric, with permanent flame retardant; (2) post-finishing flame retardant: chemical modification or fire-retardant post-finishing of textiles has a low cost, but the flame retardant generally decreases or disappears with the increase of service life and washing times. Test method for flame retardancy of fabrics The flame retardant test method of the fabric is different according to different conditions. Common test methods are: vertical combustion method, 45°combustion method, horizontal combustion method, limit oxygen index method, etc. Fabric flame retardant tester: 45 Degree Automatic Flammability Tester GT-C32 Horizontal Flammability Tester GT-C34A Horizontal Flame Chamber GT-C34B Vertical Flammability Chamber GT-C35

GESTER Instruments introduces some little common sense about shoes. 1. How to distinguish the quality of outsole? There are various outsole material for leather shoes, such as polyurethane, modified polyvinyl chloride etc. The property of flex resistance, abrasion resistance and hardness of outsole are all specified in national industry standard. When choosing the shoes, the outsole should be with elasticity when pressed. And check if any  small piece falling off from the bottom when pulling it. Also, it shouldn’t be sticky when touching, should be soft when bending. The quality failure in outsole is a common phenomenon nowadays, the cracking and massive falling off happen occasionally. The reason why it occurs is coming from the sole manufacturer, pursuing more profits and regardless of the quality, which makes the quality failure. GESTER owns below testers for the performance of that: Shoes Flexing Tester GT-KA01-3, EN Sole Flexing Tester GT-KB06. 2.How to distinguish the quality of steel shanks? What is the function for it? Each leather shoes exists one piece of steel shanks, except flats and wedges. It is installed between the outsole and the midsole of the sole and It is the backbone of the shoe, which maintains the bottom curvature and stabilizes the heel. The standard requires the performance of Longitudinal bending stiffness and hardness. When picking shoes, you can use your hand to press the foot part of the shoe moderately, the best condition is that is will not becoming soft or deformed.  After wearing, if you find that the heel is skewed or feeling uncomfortable, you can check whether the hook is broken or not. The application: Steel Shanks Stiffness Tester GT-KB46 3. Why leather shoes are always with low glue-intensity? It’s very common that adhesive leather uppers and bottoms are not firmly bonded. There are many reasons for unglued, mainly due to the selection of raw materials in the factory and improper control of the process. The rubber sole and the leather can be glued with neoprene, and the imitation leather bottom and the polyurethane bottom with more resin components are difficult to be effective, and it is necessary to use a polyurethane finger glue or other adhesive to adhere. Because an adhesive is not suitable for any material. Before the bonding, the sole and the upper should be ground and raised, multi-passed and baked, and pressed with a press to bond. The adhesion to the shoes is the peel strength. The adhesion of leather shoes is controlled by the peel strength index, which is measured by GT-KC41 Shoe Peeling Strength Tester. 4. Is it reliable to use cardboard as insole ? In the past, the insole of leather shoes was made from pig and cow bottom leather. Natural leather resources are now reduced. Substitute materials are used to replace certain natural materials. Insole cardboard for shoes is widely used at home and abroad. The shoe insole with good quality have hygroscopicity, gas permeability, flexing...

2019.4.22 Gester Instruments Co., Ltd. celebrated its 22nd anniversary celebration. All employees of the company gathered to share the happiness and joy from this big family. Before the official start, we played two games, which made the employees more united and more happy to interact and bring the atmosphere of the whole celebration higher. Mr. Peng Tao, the manager of the production department and Joyce, the chairman of the company, each expressed their opinions, summed up the achievements and shortcomings of the company's development at this stage, deployed the company's next development plan, and looked forward to the company's future development goals. The celebration also commended the employees of the company and paid tribute to the old employees. The chairman of the board took a group photo with all the staff. It is believed that through the joint efforts of all employees, GESTER Instruments will take a new step. After the celebration, everyone enjoyed a wonderful dinner time, enjoyed a drink and shared the beautiful night of GESTER. Time flies, the years are like a shuttle. For the time of 22 years, for the Gester, the twists and turns are accompanied, and the tears and flowers gather together. 22 years of vicissitudes of life, cast a brilliant life. Let us work together to create new achievements in the new year and create brilliant future!

SAIGONTEX 2019 Date: April 10th - 13th, 2019 Booth No.: Hall A2, No.2J-4 Venue: SECC-Saigon Exhibition & Convention Centre Ho Chi Minh City, Vietnam So excited that GESTER Textiles Division successfully entered the Vietnamese market. The Saigon Textile and Clothing Industry Exhibition in Vietnam is the largest and most influential textile and garment industry event in Vietnam, which is the only textile, fabric and garment industry exhibition in Vietnam that has received UFI certification (quality of exhibition visitors).  And we have become one of the exhibitors. For that, we have launched five of the best-selling machines for all visitor to visit: GT-D05 Crockmeter Rubbing Fastness Tester GT-D07 Washing color fastness Tester GT-UA03 Single Column Tensile Tester Machine GT-C13B Martindale Abrasion and Pilling Tester GT-C75 Circular Sample Cutter The customer response at this event was particularly high, making many people aware of our brand and recognizing the quality of our products. Especially for the universal tensile testing machine, it is favored by many guests. If you are interested and have this need, don't hesitate to contact us. GESTER shall do our endeavor to serve you with "the first-rate products and the first-rate prestige".

In our daily life, no matter what shoes you are worn, what type of floor is walking. The sudden slip accident would occur often which would cause the injury to people.With recent technological developments, footwear manufacturers are constantly introducing new types of sole materials. The anti-slip index of the shoes is a very important data, which may determine whether the shoes could win the good graces in the international market. At present, footwear slip data is obtained through institutions that meet international standards. BS EN 13287 and SATRA TM144 are the most authoritative standards. Both standards provide a detailed and rigorous description of the test methods and test materials, including: the various materials used as the floor, the way the shoes are in direct contact with the floor (only the forefoot touches the surface to be tested, only the heel contacts the surface to be tested) And the entire sole is in contact with the surface to be tested), the test procedure and the method of obtaining the data (normal force, friction, friction coefficient). GESTER has been committed to the development and production of various types of test instruments in line with international standards. At present, our company has launched the footwear slip resistance tester GT-KB48 for footwear anti-slip test. This machine complies with BS EN 13287 and TM144.Let's take a look of the difference during testing between BS EN 13287 and SATRA TM 144. BS EN 13287 Test Procedure: Step 1)  Firmly install the shoes on the shoe lasts or mechanical feet. Be careful not to have any slippage or looseness; if so, it’s necessary to take anti-slip measures (such as: playing paper towels in the shoes or double-sided tape on the bottom of the mechanical foot) . Apply a suitable lubricant to the shoe, uniform thickness, about 1mm thick, and place the floor material to be tested on the motion test platform. Step 2)  Lower the fixed shoe to the surface to be tested so that the shoe is in contact with the test surface. There are three ways of contact (only the forefoot contact surface, only the rear heel contact surface, and the full sole contact surface). The forefoot contact and the rear heel contact require a 7 degree angle block to allow the shoe to contact the surface at an angle of 7 degrees. The three methods must ensure that the relative movement direction of the shoe and the test surface are opposite and parallel. In order to simulate the scenes in life. Step 3)  After the shoe contacts the surface, apply a pre-plus normal force (50N) in a vertical downward direction, reach a normal force of 500N in 1s and prepare to slide the test platform. The force at this time is called static contact force and arrives. Sliding started within 0.3S after 500N, and the sliding speed during the test was 0.3 m/s. Step 4)  The data between 0.3s and 0.6s after the start of sliding is the measurement interval of the average frictional force, and the length of the m...