{"product_id":"250ml-volumetric-flask-wide-mouth-class-a-borosilicate-glass-8230250","title":"250 mL Volumetric Flask Wide Mouth Class A | Globe Scientific 8230250","description":"\u003cp\u003eDesigned for easier filling and mixing of viscous solutions, this \u003cstrong\u003e250 mL Volumetric Flask Wide Mouth Class A Borosilicate Glass\u003c\/strong\u003e from Globe Scientific features a wider neck opening that accommodates solid reagents and simplifies cleaning.\u003c\/p\u003e\n\u003cp\u003eFor analytical laboratories requiring Class A precision with improved accessibility, the Globe Scientific 8230250 combines a diamond-etched graduation line with wide mouth convenience in a single 250 mL flask with a batch calibration report included.\u003c\/p\u003e\n\u003cp\u003eManufactured from ASTM E438, Type I, Class A, 3.3 borosilicate glass, this flask delivers the chemical resistance and thermal stability required for precise analytical work in pharmaceutical, clinical, and research settings.\u003c\/p\u003e\n\u003ch2\u003eVolumetric Flask Wide Mouth Class A Borosilicate Glass Features and Benefits\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBest For:\u003c\/strong\u003e Solution preparation, serial dilutions, calibration standards, and quantitative chemical analysis\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard:\u003c\/strong\u003e ASTM E288 — Class A calibration tolerances verified to specification\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Range:\u003c\/strong\u003e -180°C to 500°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGlass Type:\u003c\/strong\u003e ASTM E438, Type I, Class A, 3.3 borosilicate glass — resists thermal shock and chemical attack from acids, alkalis, and solvents\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGraduation:\u003c\/strong\u003e Diamond-etched graduation line indicates calibrated capacity — To Contain (TC) at 20°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClosure:\u003c\/strong\u003e PP stopper included — prevents evaporation during solution equilibration\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eAvailable Sizes and Pack Quantities\u003c\/h2\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;border:1px solid #ddd;margin:1em 0\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth style=\"border:1px solid #ddd;padding:8px 12px;background:#f5f5f5;text-align:left;font-weight:600\"\u003eSKU\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ddd;padding:8px 12px;background:#f5f5f5;text-align:left;font-weight:600\"\u003eVolume\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ddd;padding:8px 12px;background:#f5f5f5;text-align:left;font-weight:600\"\u003eMouth Type\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ddd;padding:8px 12px;background:#f5f5f5;text-align:left;font-weight:600\"\u003ePack Size\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ddd;padding:8px 12px;background:#f5f5f5;text-align:left;font-weight:600\"\u003eASTM Standard\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 12px\"\u003e8230250\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 12px\"\u003e250 mL\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 12px\"\u003eWide Mouth\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 12px\"\u003eBox of 6\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 12px\"\u003eASTM E288\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 12px\"\u003e8230250\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 12px\"\u003e250 mL\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 12px\"\u003eWide Mouth\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 12px\"\u003eCase of 12\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 12px\"\u003eASTM E288\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eLaboratory Applications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePreparing standard solutions and calibration curves for spectrophotometry, HPLC, and titration analyses\u003c\/li\u003e\n\u003cli\u003ePerforming serial dilutions for microbiological assays and cell counting procedures\u003c\/li\u003e\n\u003cli\u003eMaking buffer solutions with precise pH control for electrophoresis and chromatography\u003c\/li\u003e\n\u003cli\u003eDiluting concentrated stock solutions to working concentrations in clinical and pharmaceutical laboratories\u003c\/li\u003e\n\u003cli\u003ePreparing mobile phase solutions for liquid chromatography requiring exact volumetric ratios\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eQuality Assurance and Compliance\u003c\/h2\u003e\n\u003cp\u003eGlobe Scientific manufactures Globe Glass laboratory glassware under ISO 9001:2015 certified quality systems. In-house calibration is performed in an ISO 17025 certified laboratory, and Class A volumetric flasks include a batch calibration report for full traceability. Each flask undergoes automated inspection to verify graduation accuracy, wall thickness uniformity, and rim integrity.\u003c\/p\u003e\n\u003cp\u003eGlassGuard packaging uses heavy-duty, multi-layered corrugated containers tested against the rigors of small parcel shipping. This ensures that every flask arrives intact and ready for immediate use in your laboratory.\u003c\/p\u003e\n\u003ch2\u003eVolumetric Flask Comparison: Why Choose Globe Scientific?\u003c\/h2\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;border:1px solid #ddd;margin:1em 0\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth style=\"border:1px solid #ddd;padding:8px 12px;background:#f5f5f5;text-align:left;font-weight:600\"\u003eFeature\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ddd;padding:8px 12px;background:#f5f5f5;text-align:left;font-weight:600\"\u003eGlobe Scientific 8230250\u003c\/th\u003e\n\u003cth style=\"border:1px solid #ddd;padding:8px 12px;background:#f5f5f5;text-align:left;font-weight:600\"\u003eTypical Competitor\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 12px\"\u003eGlass Type\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 12px\"\u003eASTM E438, Type I, Class A, 3.3 Borosilicate\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 12px\"\u003eBorosilicate (grade often unlisted)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 12px\"\u003eCalibration\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 12px\"\u003eClass A per ASTM E288\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 12px\"\u003eOften unlisted or unverified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 12px\"\u003ePricing\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 12px\"\u003eBelow retail pricing\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 12px\"\u003eFull retail\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 12px\"\u003eShips From\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 12px\"\u003eUSA inventory\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 12px\"\u003eVaries\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 12px\"\u003eAuthorized Dealer\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 12px\"\u003eYes — LabSupplies.com\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #ddd;padding:8px 12px\"\u003eOften third-party reseller\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eVolume Discounts and Institutional Pricing\u003c\/h2\u003e\n\u003cp\u003eLabSupplies.com offers tiered quantity pricing for academic and research institutions. As an authorized dealer, we ship directly from USA inventory.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eWhat is a 250 mL volumetric flask used for?\u003c\/h3\u003e\n\u003cp\u003eA 250 mL volumetric flask is used to prepare solutions of precise concentration by dissolving a measured amount of solute and diluting to the exact 250 mL graduation mark. Analytical chemists, pharmaceutical researchers, and clinical technicians rely on volumetric flasks for calibration standards, buffer preparation, and serial dilutions.\u003c\/p\u003e\n\u003ch3\u003eWhat is the difference between Class A and Class B volumetric flasks?\u003c\/h3\u003e\n\u003cp\u003eClass A volumetric flasks have tighter calibration tolerances per ASTM E288 and include individual or batch calibration certificates for traceability. Class B flasks have wider tolerances and are suitable for educational use and non-critical applications. Both classes are manufactured from the same 3.3 borosilicate glass.\u003c\/p\u003e\n\u003ch3\u003eWhat volumetric flask sizes does LabSupplies.com carry?\u003c\/h3\u003e\n\u003cp\u003eLabSupplies.com stocks Globe Scientific volumetric flasks from 1 mL to 2000 mL in Class A and Class B calibrations. Narrow mouth and wide mouth configurations are available, along with polypropylene options for break-resistant applications.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"250 mL Class A Wide Mouth Volumetric Flask Borosilicate Glass | Globe Scientific 8230250\",\"description\":\"250 mL Wide Mouth volumetric flask in 3.3 borosilicate glass. Meets ASTM E288. Globe Scientific 8230250.\",\"sku\":\"8230250\",\"mpn\":\"8230250\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Globe Scientific\"},\"manufacturer\":{\"@type\":\"Organization\",\"name\":\"Globe Scientific\"},\"offers\":{\"@type\":\"Offer\",\"url\":\"https:\/\/labsupplies.com\/products\/250ml-volumetric-flask-wide-mouth-class-a-borosilicate-glass-8230250\",\"priceCurrency\":\"USD\",\"price\":\"400.00\",\"availability\":\"https:\/\/schema.org\/InStock\",\"seller\":{\"@type\":\"Organization\",\"name\":\"LabSupplies.com\"}},\"material\":\"Borosilicate Glass 3.3\"}\n\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"What is a 250 mL volumetric flask used for?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"A 250 mL volumetric flask is used to prepare solutions of precise concentration by dissolving a measured amount of solute and diluting to the exact 250 mL graduation mark. 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