{"product_id":"hdpe-geomembrane-carbon-black-content-tester","title":"HDPE Geomembrane Carbon Black Content Tester","description":"\u003ch2\u003eHDPE Geomembrane Carbon Black Content Tester – QualiGTX™ CBC\u003c\/h2\u003e\n\u003ch4\u003eCarbon Black Content Tester for Geosynthetics Using Nitrogen Pyrolysis\u003c\/h4\u003e\n\u003cp\u003eThe QualiGTX™ CBC HDPE Geomembrane Carbon Black Content Tester measures the carbon black concentration in\n    polyethylene, polypropylene, and polybutylene products through controlled thermal decomposition in a nitrogen\n    environment. Once the polymer has decomposed, the remaining material is weighed to establish its carbon black\n    content. This measurement is particularly important for HDPE geomembranes, where carbon black provides protection\n    against long-term ultraviolet exposure. Because the concentration must remain within a defined range to maintain\n    effective UV resistance without compromising material properties, manufacturers and quality control laboratories\n    need reliable test results rather than depending solely on material supplier declarations.\u003c\/p\u003e\n\u003cp\u003eAt the heart of the CBC is a programmable tube furnace with a temperature range extending from ambient conditions to\n    990 °C. Its segmented control system allows users to configure heating ramps, decomposition holds, and additional\n    soaking stages within a single operating profile. Once programmed, the furnace automatically completes the specified\n    temperature cycle, reducing the need for continuous operator supervision during tests that can take close to an\n    hour. An LCD provides operating information, while the heating tube, measuring Ø31 mm in diameter with approximately\n    400 mm of heated length, accommodates a standard combustion boat.\u003c\/p\u003e\n\u003cp\u003eWith a total weight of 38 kg and external dimensions of 550 × 450 × 1130 mm, the QualiGTX™ CBC provides carbon black\n    analysis capabilities without requiring a full-scale analytical laboratory setup. It is suitable for geomembrane and\n    geopipe manufacturers, construction quality assurance laboratories, and certification organizations conducting\n    production inspections and material conformance assessments. Its compatibility with polyethylene, polypropylene, and\n    polybutylene also allows laboratories to test multiple polyolefin product types using a single instrument.\u003c\/p\u003e\n\u003ch2\u003eHDPE Geomembrane Carbon Black Content Tester – QualiGTX™ CBC Applications\u003c\/h2\u003e\n\u003cp\u003eCarbon black concentration is a key requirement in most polyolefin geosynthetic material specifications. The\n    QualiGTX™ CBC supports testing throughout manufacturing, material acceptance, quality verification, and failure\n    analysis.\u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eHDPE Geomembrane Production Quality Control: Measures carbon black concentration in manufactured geomembrane\n            sheets to verify compliance with specified limits before products are dispatched to construction sites.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eLandfill Liner Material Verification: Assesses delivered HDPE liner materials against project requirements as\n            part of construction quality assurance and acceptance testing.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eMining and Heap Leach Pad Liners: Evaluates carbon black levels in geomembranes exposed to sunlight for\n            extended periods before protective cover materials are installed.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eHDPE Pipes and Drainage Materials: Determines carbon black concentration in corrugated pipes, drainage\n            boards, and other buried polyolefin products.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eResin and Masterbatch Incoming Inspection: Verifies the composition of received raw materials and compounded\n            batches, helping identify formulation inconsistencies before extrusion begins.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eIndependent Quality Assurance and Certification: Provides measurable carbon black content results for\n            third-party inspections, project documentation, and material conformance reports.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003ePolypropylene and Polybutylene Testing: Extends carbon black analysis beyond polyethylene, allowing\n            laboratories to assess additional polyolefin product categories with the same equipment.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eInvestigation of UV-Related Material Deterioration: Helps establish whether insufficient carbon black\n            concentration may have contributed to premature embrittlement and degradation during service.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eMaterial Formulation and Research: Supports the development and evaluation of polymer stabilizer systems by\n            providing quantitative carbon black measurements for different formulations.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eHDPE Geomembrane Carbon Black Content Tester – QualiGTX™ CBC Key Features\u003c\/h2\u003e\n\u003cp\u003eThe QualiGTX™ CBC combines controlled nitrogen pyrolysis, programmable heating, and gravimetric measurement in a\n    compact furnace system. Its operating functions are designed to provide a controlled thermal cycle and a practical\n    testing workflow for carbon black determination.\u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eNitrogen-Based Pyrolysis: Creates an oxygen-free environment in which the polymer decomposes while the carbon\n            black remains in the combustion boat for subsequent weighing.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eWide Temperature Range from Ambient to 990 °C: Provides the thermal capacity required for polyolefin\n            decomposition, with additional temperature headroom for more demanding formulations.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eMulti-Stage Temperature Programming: Allows users to configure heating ramps, holding periods, and soaking\n            stages within a single automated temperature cycle.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eCustomizable Heating Profiles: Enables laboratories to establish temperature schedules according to their\n            testing procedures instead of relying on fixed furnace programs.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eAutomatic Temperature Control: Maintains the programmed temperature throughout the test, minimizing the need\n            for manual adjustments and continuous furnace monitoring.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eØ31 mm Heating Tube with Approximately 400 mm Heated Length: Provides space for a standard combustion boat\n            while allowing the nitrogen flow to carry volatile decomposition products through the heated section.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eLCD Operating Display: Presents temperature and active program information, allowing operators to monitor\n            furnace operation during testing.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eCompact 38 kg Configuration: Features overall dimensions of 550 × 450 × 1130 mm, making the instrument\n            suitable for laboratories with limited available space.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n    \u003cli\u003e\n\n\n        \u003cp\u003eCompatibility with Multiple Polyolefins: Supports carbon black content determination in polyethylene,\n            polypropylene, and polybutylene materials using one testing system.\u003c\/p\u003e\n\n\n    \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTheory and Test Method\u003c\/h2\u003e\n\u003cp\u003eUltraviolet exposure gradually damages polyethylene by initiating chemical reactions within its polymer structure. UV\n    radiation provides sufficient energy to break carbon-hydrogen bonds, producing free radicals that trigger further\n    reactions along the polymer chains. As degradation progresses, the material loses flexibility and becomes\n    increasingly susceptible to brittleness and cracking.\u003c\/p\u003e\n\u003cp\u003eCarbon black helps prevent this deterioration through two complementary mechanisms. First, its particles absorb\n    ultraviolet radiation across the spectrum and dissipate the absorbed energy as heat. Second, they capture free\n    radicals that develop within the polymer despite the protective effect of UV absorption. For this reason,\n    geomembrane specifications commonly require carbon black concentrations between 2 and 3 percent by mass.\n    Concentrations below this range can leave the material inadequately protected against ultraviolet degradation.\n    Excessive carbon black, however, can interfere with the polymer's crystalline structure, reducing stress crack\n    resistance and making consistent particle dispersion more difficult. Maintaining the correct concentration is\n    therefore essential, and laboratory measurement provides a more dependable verification method than relying on\n    assumed or declared values.\u003c\/p\u003e\n\u003cp\u003eThe nitrogen pyrolysis method determines carbon black content by taking advantage of the different thermal\n    characteristics of the polymer and its carbon black component. A specimen of known mass is placed inside a\n    combustion boat, which is then positioned within the furnace tube. Nitrogen flows through the tube to remove oxygen\n    and establish an inert atmosphere before heating begins.\u003c\/p\u003e\n\u003cp\u003eMaintaining oxygen-free conditions is essential because the objective is to decompose the polymer without oxidizing\n    the carbon black. When the temperature rises above approximately 600 °C, polyethylene chains break down into\n    volatile hydrocarbon compounds. The flowing nitrogen carries these decomposition products out of the heated tube,\n    while carbon black, consisting of elemental carbon without a volatile fraction under these conditions, remains in\n    the combustion boat.\u003c\/p\u003e\n\u003cp\u003eAfter thermal decomposition, the remaining residue is weighed and compared with the specimen's original mass. The\n    resulting mass ratio establishes the carbon black content of the tested material. This calculation assumes that\n    carbon black is the only non-volatile component remaining after the polymer decomposes. Consequently, the method is\n    suitable for unfilled polyolefin materials but requires consideration when testing compounds containing mineral\n    fillers. Such fillers leave behind inorganic ash that contributes to the final residue weight and can therefore\n    affect the calculated carbon black concentration.\u003c\/p\u003e\n\u003cp\u003eThe programmable temperature control of the QualiGTX™ CBC helps maintain the conditions required for reliable\n    decomposition. A controlled heating ramp limits the rate at which volatile compounds are released, allowing the\n    nitrogen stream sufficient time to remove them from the furnace tube. The subsequent holding stage maintains the\n    required decomposition temperature long enough for the polymer to break down completely. Additional soaking at a\n    higher temperature can also be configured when required by a particular formulation.\u003c\/p\u003e\n\u003cp\u003eComplete polymer decomposition is critical to obtaining an accurate result. If the heating cycle ends prematurely,\n    undecomposed polymer may remain in the combustion boat and contribute to the measured residue mass. This additional\n    residue produces an artificially high carbon black content reading. Appropriate programming of the heating rate,\n    decomposition temperature, and holding duration is therefore essential for dependable gravimetric analysis.\u003c\/p\u003e\n\u003ch2\u003eHDPE Geomembrane Carbon Black Content Tester - QualiGTX™ CBC Technical Specifications\u003c\/h2\u003e\n\u003ctable class=\"table table-style-align-center\" align=\"center\" border=\"1\" cellspacing=\"0\" cellpadding=\"0\"\u003e\n    \u003cthead\u003e\n        \u003ctr\u003e\n            \u003cth\u003eParameter\u003c\/th\u003e\n            \u003cth\u003eSpecification\u003c\/th\u003e\n        \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n        \u003ctr\u003e\n            \u003ctd\u003eTest Principle\u003c\/td\u003e\n            \u003ctd\u003eHigh-temperature pyrolysis under nitrogen, gravimetric residue analysis\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003eMeasured Property\u003c\/td\u003e\n            \u003ctd\u003eCarbon black content, percent by mass\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003eApplicable Materials\u003c\/td\u003e\n            \u003ctd\u003ePolyethylene, polypropylene, and polybutylene products\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003eTest Temperature Range\u003c\/td\u003e\n            \u003ctd\u003eAmbient to 990 °C\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003eTemperature Control\u003c\/td\u003e\n            \u003ctd\u003eFull program control, segmented, freely configurable\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003eDisplay\u003c\/td\u003e\n            \u003ctd\u003eLCD\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003eHeating Tube Inner Diameter\u003c\/td\u003e\n            \u003ctd\u003eØ31 mm\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003eHeated Tube Length\u003c\/td\u003e\n            \u003ctd\u003e400 ± 50 mm\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003eProtective Atmosphere\u003c\/td\u003e\n            \u003ctd\u003eNitrogen\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003eDimensions (W × D × H)\u003c\/td\u003e\n            \u003ctd\u003e550 × 450 × 1130 mm\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003eWeight\u003c\/td\u003e\n            \u003ctd\u003e38 kg\u003c\/td\u003e\n        \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Qualitest USA LC","offers":[{"title":"Default Title","offer_id":53605079810359,"sku":null,"price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0786\/1859\/1543\/files\/hdpe-geomembrane-carbon-black-co.webp?v=1794484766","url":"https:\/\/qualitest.us\/ar\/products\/hdpe-geomembrane-carbon-black-content-tester","provider":"Qualitest USA LC","version":"1.0","type":"link"}