{"product_id":"geotextile-acid-and-alkali-resistance-chamber","title":"Geotextile Acid and Alkali Resistance Chamber","description":"\u003ch2\u003eGeotextile Acid and Alkali Resistance Chamber – QualiGTX™ AA\u003c\/h2\u003e\n\u003cp\u003eThe QualiGTX™ AA Geotextile Acid and Alkali Resistance Chamber evaluates the chemical durability of geosynthetic\n    materials by exposing specimens to acidic and alkaline solutions under controlled heating conditions. After\n    exposure, tensile testing determines the percentage of original strength retained by the material. The system\n    features two separately operated liquid tanks, allowing acid and alkali resistance assessments to run simultaneously\n    on specimens cut from the same material. Operating temperatures can be adjusted from ambient conditions to 65 °C,\n    with temperature accuracy of ±1 °C at the commonly used 60 °C screening temperature.\u003c\/p\u003e\n\u003cp\u003eChemical compatibility is a critical consideration when selecting geosynthetics for applications involving aggressive\n    soil and groundwater conditions. Polyester materials are susceptible to strength degradation through alkaline\n    hydrolysis, while acids can affect the stabilizing additives used in polyolefin products. Laboratory testing\n    therefore provides essential evidence of material durability under anticipated service conditions. With the\n    QualiGTX™ AA, specimens undergo controlled chemical immersion for a predetermined period before their tensile\n    strength is compared with that of untreated reference samples.\u003c\/p\u003e\n\u003cp\u003eTemperature regulation is handled by a digital touchscreen controller, supported by a 2.4 kW heating system that\n    brings the liquids to the required temperature and keeps conditions stable throughout extended exposure cycles,\n    which frequently last several days. The chamber provides internal dimensions of 450 × 550 × 550 mm. Weighing 60 kg,\n    the equipment occupies a footprint of 1150 × 560 mm and operates from a single-phase power supply. Its testing\n    capabilities support geosynthetic manufacturers, independent certification laboratories, and geotechnical research\n    organizations conducting product qualification, incoming material inspection, and long-term durability\n    investigations.\u003c\/p\u003e\n\u003ch2\u003eGeotextile Acid and Alkali Resistance Chamber – QualiGTX™ AA Applications\u003c\/h2\u003e\n\u003cp\u003eGeosynthetic chemical resistance assessment is important in projects where fabrics, barriers, reinforcement products,\n    or drainage materials come into contact with groundwater, industrial liquids, or other substances with strongly\n    acidic or alkaline properties.\u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003e\n        \u003cp\u003e\u003cstrong\u003eLandfill Leachate Containment:\u003c\/strong\u003e Assesses the chemical durability of protective geotextiles\n            and drainage components exposed to landfill leachate throughout the post-closure service period.\u003c\/p\u003e\n    \u003c\/li\u003e\n    \u003cli\u003e\n        \u003cp\u003e\u003cstrong\u003eConcrete and Cement-Stabilized Structures:\u003c\/strong\u003e Evaluates reinforcement materials installed in\n            contact with cement-based construction materials, where pore water with a pH of 12 to 13 can cause polyester\n            degradation through hydrolysis.\u003c\/p\u003e\n    \u003c\/li\u003e\n    \u003cli\u003e\n        \u003cp\u003e\u003cstrong\u003eMine Drainage and Tailings Facilities:\u003c\/strong\u003e Determines the resistance of geosynthetics exposed to\n            acid rock drainage, which can produce highly acidic conditions with pH levels well below 3 over periods\n            extending for decades.\u003c\/p\u003e\n    \u003c\/li\u003e\n    \u003cli\u003e\n        \u003cp\u003e\u003cstrong\u003eIndustrial Waste and Process Water Containment:\u003c\/strong\u003e Examines whether geosynthetic products are\n            compatible with the actual chemical composition of industrial waste and process liquids at a project site.\n        \u003c\/p\u003e\n    \u003c\/li\u003e\n    \u003cli\u003e\n        \u003cp\u003e\u003cstrong\u003eAgricultural and Fertilizer Runoff Applications:\u003c\/strong\u003e Evaluates drainage fabrics installed in\n            agricultural soils where fertilizer application can increase the concentration of chemicals in the\n            surrounding environment.\u003c\/p\u003e\n    \u003c\/li\u003e\n    \u003cli\u003e\n        \u003cp\u003e\u003cstrong\u003eGeotextile Manufacturing Quality Control:\u003c\/strong\u003e Supports routine production checks by identifying\n            changes in chemical resistance associated with variations in resin supply or additive formulations.\u003c\/p\u003e\n    \u003c\/li\u003e\n    \u003cli\u003e\n        \u003cp\u003e\u003cstrong\u003ePolymer Selection and Product Development:\u003c\/strong\u003e Provides comparative test results for polyester,\n            polypropylene, and polyethylene materials to help determine which construction is better suited to the\n            intended chemical exposure.\u003c\/p\u003e\n    \u003c\/li\u003e\n    \u003cli\u003e\n        \u003cp\u003e\u003cstrong\u003eThird-Party Certification Laboratories:\u003c\/strong\u003e Generates retained tensile strength measurements\n            required for product approval programs, certification assessments, and project documentation.\u003c\/p\u003e\n    \u003c\/li\u003e\n    \u003cli\u003e\n        \u003cp\u003e\u003cstrong\u003eFailure Investigation:\u003c\/strong\u003e Recreates suspected chemical exposure conditions in the laboratory to\n            establish whether chemical degradation contributed to strength loss in recovered geosynthetic samples.\u003c\/p\u003e\n    \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eGeotextile Acid and Alkali Resistance Chamber – QualiGTX™ AA Key Features\u003c\/h2\u003e\n\u003cp\u003eThe QualiGTX™ AA combines simultaneous chemical exposure testing with controlled heating, providing consistent\n    conditions for accelerated geosynthetic durability assessments.\u003c\/p\u003e\n\u003cul\u003e\n    \u003cli\u003e\n        \u003cp\u003e\u003cstrong\u003eTwo Independent Liquid Tanks:\u003c\/strong\u003e Provides separate environments for acidic and alkaline\n            exposure, allowing matched specimens to undergo both tests concurrently. This arrangement reduces overall\n            testing time while limiting differences caused by variations between material samples.\u003c\/p\u003e\n    \u003c\/li\u003e\n    \u003cli\u003e\n        \u003cp\u003e\u003cstrong\u003e±1 °C Temperature Accuracy at 60 °C:\u003c\/strong\u003e Keeps the operating temperature within the specified\n            tolerance, reducing the influence of temperature fluctuations on chemical reaction rates during testing.\u003c\/p\u003e\n    \u003c\/li\u003e\n    \u003cli\u003e\n        \u003cp\u003e\u003cstrong\u003eAmbient to 65 °C Operating Range:\u003c\/strong\u003e Supports commonly specified screening temperatures while\n            providing additional capacity for accelerated chemical exposure investigations.\u003c\/p\u003e\n    \u003c\/li\u003e\n    \u003cli\u003e\n        \u003cp\u003e\u003cstrong\u003e2.4 kW Heating System:\u003c\/strong\u003e Supplies the heating capacity required to bring both tanks to their\n            selected temperatures and sustain those conditions during exposure cycles lasting several days.\u003c\/p\u003e\n    \u003c\/li\u003e\n    \u003cli\u003e\n        \u003cp\u003e\u003cstrong\u003eDigital Touchscreen Controller:\u003c\/strong\u003e Allows operators to select the required temperature and\n            monitor the actual operating value throughout the test.\u003c\/p\u003e\n    \u003c\/li\u003e\n    \u003cli\u003e\n        \u003cp\u003e\u003cstrong\u003eAutomatic Thermostatic Operation:\u003c\/strong\u003e Regulates heating to preserve the selected temperature\n            without requiring continuous operator intervention during extended testing.\u003c\/p\u003e\n    \u003c\/li\u003e\n    \u003cli\u003e\n        \u003cp\u003e\u003cstrong\u003e450 × 550 × 550 mm Internal Chamber:\u003c\/strong\u003e Provides sufficient working space for batches of\n            prepared specimens arranged on suitable racks or suspended within the test liquid.\u003c\/p\u003e\n    \u003c\/li\u003e\n    \u003cli\u003e\n        \u003cp\u003e\u003cstrong\u003eUniform Temperature Distribution:\u003c\/strong\u003e Creates consistent thermal conditions throughout each\n            tank, helping ensure that specimens within the same batch experience comparable exposure.\u003c\/p\u003e\n    \u003c\/li\u003e\n    \u003cli\u003e\n        \u003cp\u003e\u003cstrong\u003eSingle-Phase Power Supply:\u003c\/strong\u003e Allows installation using a standard single-phase electrical\n            connection without requiring a dedicated power service.\u003c\/p\u003e\n    \u003c\/li\u003e\n    \u003cli\u003e\n        \u003cp\u003e\u003cstrong\u003eBroad Material Compatibility:\u003c\/strong\u003e Accommodates geotextiles, geomembranes, geogrids, and other\n            geosynthetic materials requiring laboratory chemical resistance assessment.\u003c\/p\u003e\n    \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTheory and Test Method\u003c\/h2\u003e\n\u003cp\u003eThe way chemical exposure affects a geosynthetic depends largely on its polymer composition and the chemical\n    structure of its constituent materials. Polyester contains ester bonds along its molecular backbone. In alkaline\n    environments, hydroxide ions attack these bonds and break them through hydrolysis. As the molecular chains become\n    shorter, their molecular weight decreases, resulting in a corresponding reduction in tensile strength. This behavior\n    makes polyester reinforcement particularly important to evaluate when it is installed near concrete or\n    lime-stabilized soil, where cement-based pore water can reach pH levels of 12 to 13.\u003c\/p\u003e\n\u003cp\u003ePolypropylene and polyethylene have different chemical structures. Their molecular backbones do not contain\n    hydrolyzable groups, giving these polymers strong resistance to both acidic and alkaline environments. However,\n    chemical exposure can still affect their stabilizing additives and mineral fillers through leaching or chemical\n    attack. Consequently, the base polymer alone does not provide sufficient evidence of long-term durability, and the\n    complete material construction should be assessed.\u003c\/p\u003e\n\u003cp\u003eThe test procedure focuses on measuring changes in mechanical performance following chemical exposure. Prepared\n    specimens are immersed in specified acidic and alkaline solutions at elevated temperatures for a predetermined\n    duration. Once exposure is complete, the samples are removed, rinsed, conditioned, and subjected to tensile testing.\n    Their post-exposure strength is then compared with the tensile strength of unexposed reference specimens from the\n    same material. The resulting retained-strength percentage provides a quantitative indication of chemical durability\n    and serves as the primary value used for specification compliance.\u003c\/p\u003e\n\u003cp\u003eTesting both chemical environments with specimens obtained from the same production roll is particularly important.\n    Geosynthetic properties can vary between rolls, potentially creating differences in tensile performance that are\n    unrelated to chemical exposure. Using matched specimens helps isolate the effects of acidic and alkaline conditions\n    and makes the comparison more representative.\u003c\/p\u003e\n\u003cp\u003eElevated temperature accelerates chemical degradation, making it possible to evaluate material performance over\n    shorter laboratory periods. Hydrolysis and many other degradation reactions approximately double in rate with every\n    10 °C increase in temperature. Accordingly, exposure at 60 °C can compress degradation that would otherwise develop\n    over years under ambient conditions into a period of several laboratory days.\u003c\/p\u003e\n\u003cp\u003eAccurate temperature regulation is therefore essential to obtaining meaningful results. If the chamber operates\n    several degrees above the specified temperature, chemical reactions may proceed faster than intended, potentially\n    making the material appear less durable than it actually is. Conversely, temperatures below the target can slow\n    degradation and produce overly favorable results. The QualiGTX™ AA addresses this requirement with ±1 °C temperature\n    control at 60 °C. Its independently operated tanks also allow acidic and alkaline solutions to reach their\n    respective operating temperatures without either testing process having to wait for the other.\u003c\/p\u003e\n\u003ch2\u003eGeotextile Acid and Alkali Resistance Chamber - QualiGTX™ AA 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\u003eImmersion exposure in acidic and alkaline liquids at controlled elevated temperature\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003eMeasured Property\u003c\/td\u003e\n            \u003ctd\u003eRetained tensile strength after chemical exposure (tested separately)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003eNumber of Liquid Tanks\u003c\/td\u003e\n            \u003ctd\u003e2\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003eMaximum Working Temperature\u003c\/td\u003e\n            \u003ctd\u003e65 °C\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003eTemperature Control Tolerance\u003c\/td\u003e\n            \u003ctd\u003e60 °C ± 1 °C\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003eTotal Heater Power\u003c\/td\u003e\n            \u003ctd\u003e2.4 kW\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003eTemperature Control\u003c\/td\u003e\n            \u003ctd\u003eDigital touchscreen, automatic thermostatic\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003eWorking Chamber Dimensions\u003c\/td\u003e\n            \u003ctd\u003e450 × 550 × 550 mm\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003eApplicable Materials\u003c\/td\u003e\n            \u003ctd\u003eGeotextiles, geomembranes, geogrids, and other geosynthetic and non-geosynthetic materials\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003eVoltage\u003c\/td\u003e\n            \u003ctd\u003e220 V (110V is also available)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003eExternal Dimensions (W × D × H)\u003c\/td\u003e\n            \u003ctd\u003e1150 × 560 × 550 mm\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003eWeight\u003c\/td\u003e\n            \u003ctd\u003e60 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":53604570825015,"sku":null,"price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0786\/1859\/1543\/files\/geotextile-acid-and-alkali-resis.webp?v=1794480615","url":"https:\/\/qualitest.us\/es\/products\/geotextile-acid-and-alkali-resistance-chamber","provider":"Qualitest USA LC","version":"1.0","type":"link"}