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Gester Instruments | Professional Glove, Mask, Safety Helmet, Protective Clothing & Footwear Testing Equipment Manufacturer Since 1997


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What should I do once I receive colour fastness to ozone imperfections?

Please contact us immediately once you have found the imperfections of colour fastness to ozone . If you have received our second-best product,we will arrange professional staff to verify it. Return of goods or exchanging goods service is provided for you. Before shipment, we will conduct strict test on each product to ensure the quality of product. We pay close attention to the sales service, which can solve problems including handling imperfections of the goods.

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GESTER International Co.,Limited is a professional manufacturer and saler of mask tester. Gester Instruments's electronic crockmeter series are created based on unremitting efforts. Gester Instruments Instruments flammability test chamber is carefully produced. It is treated with flame retardant, environmentally friendly fabrics, chemical and safe dyes. Its raw materials are skin-friendly. It is manufactured to meet international safety requirements. The vigorous development of crockmeter/rubbing fastness tester due to its hydrostatic head tester for sale features. Adopting high-quality imported stainless steel, it has a long service life.

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We are always committed to becoming the top one brand in abrasion resistance tester industry in the world. Please contact.

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Why GESTER is Recognized as a Global Top Safety Shoe Tester Exporter
As global industrial safety requirements tighten, GESTER International Co., Ltd has emerged as a globally recognized top safety shoe tester exporter, serving 168 countries with over 25 years of specialized expertise. The company’s success hinges on its commitment to precision engineering, compliance with international standards (ISO, ASTM, EN, SATRA), and partnerships with renowned testing institutes like SGS, Intertek, and TUV. Its product lineup, including the Safety Glove & Shoe Upper Cutting Tester GT-KC29 and cut resistance testers, delivers reliable, repeatable data for safety footwear durability, cut resistance, and other critical performance indicators. Complemented by a comprehensive global service network (on-site installation, calibration, staff training) and OEM/ODM customization capabilities, GESTER streamlines quality control for manufacturers, facilitating market access and ensuring workplace safety. Trusted by PPE brands and laboratories worldwide, GESTER bridges technical excellence and practical usability to drive efficiency in safety shoe certification and global trade.
Everything You Need to Know About the Hydrostatic Head Tester
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A Safety Footwear Impact Tester evaluates the impact resistance of safety shoes by striking the steel toe cap with 100J/200J kinetic energy, ensuring compliance with global standards (EN ISO 20344, ASTM F2412). It’s critical for verifying product protection, facilitating certification, and optimizing safety shoe design. GESTER Instruments offers reliable, user-friendly testers trusted by manufacturers and labs worldwide.
Cobb Test Paper Absorption Tester GT-N07 - A Comprehensive Guide
The Cobb Test Paper Absorption Tester GT-N07 is an essential instrument for evaluating the water absorption properties of paper and paperboard materials. This test, commonly known as the Cobb method, helps determine how much water paper can absorb over a specified time under controlled conditions—crucial for assessing its suitability in printing, packaging, and coating applications.
A Complete Guide to Martindale Testing by the Best Martindale Abrasion Tester Supplier
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Heat Contact Machine GT-C101-The Ultimate Selection Guide

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GT-C101 simulates real working conditions by measuring heat transfer delay and thermal transmission under instant contact with high-temperature surfaces. Fully compliant with EN 407, EN 702, and ISO 12127-1 standards, this machine provides precise, repeatable data for manufacturers, laboratories, and research institutions. With high-temperature capability up to 500°C, advanced calorimetry, digital monitoring, and adjustable contact speed, the Heat Contact Machine GT-C101 is an indispensable tool for developing and certifying next-generation PPE and heat-insulation materials.
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Ball Burst Method (ASTM D3787): Steel ball penetration for textiles/films using testers like GT-C02-2.

Hydraulic Method (ISO 13938.1): Fluid pressure on rubber diaphragm for industrial fabrics via GT-C12A.

Pneumatic Method (ISO 13938.2): Compressed air for breathable materials tested with GT-C12B.
Results are influenced by raw materials, yarn properties,
How to Choose the Right Safety Shoes Testing Equipment Supplier?
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Understanding the Color Fastness To Washing Testing Machine GT-D07
The GESTER GT-D07 Color Fastness To Washing Testing Machine is designed to evaluate the color durability of dyed fabrics under washing and dry-cleaning conditions. By simulating real washing processes, it helps determine how resistant a fabric is to fading and staining, ensuring consistency, reliability, and compliance with international standards. With stainless-steel construction, safety features, and precise temperature and timing control, the GT-D07 provides an efficient and standardized testing solution for textile manufacturers worldwide.
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Quanzhou Gester International Co.,Ltd gains certificates of ISO 9001, 3A and SGS Audited supplier etc. with advanced design concept, excellent manufacturing technology and strict quality control.
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Tel: +86-595-28886108 
Fax: +86-595-22515221
E-mail: sales10@gester-instruments.com,
                 info@gester-instruments.com
Mobile/Whatapp/ Wechat:  
             + 86(0)18059985379
Address:  Block 402,4th floor, f buliding, shengfulan business Center, no.577 jitai road, economic and  Technological development zone quanzhou of fujian.China.
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