Gester Instruments | Professional Textile Testing Equipment Manufacturers Since 1997
Common calculation formulas for textiles
Commonly used calculation formulas for textiles are divided into two types: fixed length calculation formula and fixed weight calculation formula. The calculation formula of the fixed length system: (1), denier (D) u003dg/L*9000 where g is the weight of the silk thread (grams), L is the length of the silk thread (m) (2), tex (number) )[tex(H)]: texu003dg/L*1000 where g is the weight (g) of the yarn (or silk), and L is the length of the yarn (or silk) (m) (3), dtex( dtex): dtexu003dg/L*9000 where g is the weight of the thread (grams), and L is the length of the thread (meters). fixed weight calculation formula: (1), metric count (N): Nu003dL/G Where G is the weight (g) of the yarn (or silk), L is the length of the yarn (or silk) (m) (2), British count (S): Su003dL/(G*840) where G is the silk thread Weight (lbs), L is the length of the thread (yards) 2, select the conversion formula: (1), the conversion formula of metric count (N) and denier (D)u003d9000/N (2), imperial count The conversion formula of number (S) and denier (D)u003d5315/S (3), the conversion formula of decitex (dtex) and tex (tex): 1texu003d10dtex (4), tex (tex) and denier (D) conversion formula: texu003dD/9 (5), tex (tex) and English count (S) conversion formula: texu003dK/SK value: pure cotton yarn Ku003d583.1 purified fiber Ku003d590.5 polyester cotton yarn Ku003d587.6 cotton viscose yarn (75:25) Ku003d584.8 dimensional cotton yarn (50:50) Ku003d587.0 (6), tex (tex) and metric number (N) Conversion formula: texu003d1000/N (7), conversion formula of dtex and denier (D): dtexu003d10D/9 (8), dtex and imperial Number (S) conversion formula: dtexu003d10K/SK value: pure cotton yarn Ku003d583.1 purified fiber Ku003d590.5 polyester cotton yarn Ku003d587.6 cotton viscose yarn (75:25) Ku003d584.8 dimensional cotton yarn (50:50) K u003d587.0 (9), the conversion formula of decitex (dtex) and metric count (N): dtexu003d10000/N (10), the conversion formula of metric centimeter (cm) and imperial inch (inch): 1inchu003d The conversion formula of 2.54cm (11), metric meters (M) and English yards (yd): 1 yard u003d 0.9144 meters (12), conversion of satin square meter weight (g/m2) and millimetres (m/m) Formula: 1m/mu003d4.3056g/m2 (13), the conversion formula of actual weight of silk and pound weight: pound weight (lb) u003d weight per meter of silk (g/m)*0.9144(m/yd)*50( yd)/453.6
The Heat Contact Machine GT-C101 is a specialized testing instrument designed for evaluating the heat resistance and thermal protective performance of gloves, protective clothing, and other heat-resistant materials used in high-temperature environments. In industries such as smelting, casting, welding, and glass manufacturing, workers are frequently exposed to intense heat, making accurate testing of contact heat resistance essential for ensuring safety and compliance.
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.
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,
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