{"product_id":"weigh-boat-square-500pk","title":"Weigh Boat, Square (Pack of 500)","description":"\u003ch2\u003eSquare Disposable Weigh Boats — FDA Food-Grade Polystyrene for Accurate Sample Measurement\u003c\/h2\u003e\n\u003cp\u003eHeathrow Scientific square weigh boats are manufactured from FDA food-grade polystyrene and are biologically inert, making them suitable for direct contact with pharmaceutical ingredients, food samples, chemical reagents, and powdered compounds. Available in Small, Medium, and Large sizes across three colors — White, Blue, and Black — each boat features smooth, flat interior surfaces that minimize sample adhesion and an integrated easy-pour spout that transfers weighed material cleanly into reaction vessels, dissolution media, or extraction containers. Sold in packs of 500, these boats are the dependable everyday consumable for analytical balance and microbalance workflows in research, QC, and production environments.\u003c\/p\u003e\n\n\u003ch2\u003eFeatures \u0026amp; Benefits\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFDA food-grade polystyrene:\u003c\/strong\u003e Material compliance with FDA 21 CFR food contact regulations allows use with pharmaceutical APIs, nutraceutical ingredients, and food science samples without additional material qualification documentation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBiologically inert:\u003c\/strong\u003e Polystyrene does not react with or absorb standard aqueous buffer solutions, organic solvents at low concentrations, or common laboratory chemicals, ensuring the weighed quantity reflects the true sample mass without container interaction.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmooth, flat interior surfaces:\u003c\/strong\u003e The smooth-surface interior minimizes residual sample adhesion, allowing virtually complete transfer of powders and granules from boat to receiving vessel, reducing weighing error from material retained in the boat.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated easy-pour spout:\u003c\/strong\u003e Each boat has a molded pouring channel at one corner that creates a clean, controlled pour stream for fine powders and granules, reducing spillage and sample loss during transfer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRounded corners:\u003c\/strong\u003e Rounded interior corners prevent powder bridging and packing that occurs at sharp right-angle corners, ensuring consistent flow-out of the full weighed sample.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShallow, wide-bottom design:\u003c\/strong\u003e A low-profile, wide-base geometry resists tipping when placed on balance pans, reducing the risk of sample loss during the weighing process even when the boat is loaded near capacity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResistant to dilute acids, alcohols, and bases:\u003c\/strong\u003e Polystyrene resists the sample matrices and cleaning agents commonly used in analytical chemistry, QC, and pharmaceutical testing environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMicrowave moisture analyzer compatible:\u003c\/strong\u003e The material is compatible with microwave-based loss-on-drying instruments, extending the application range to moisture content determination workflows.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThree color options for sample differentiation:\u003c\/strong\u003e White, Blue, and Black provide contrast options depending on sample color — white boats enhance visibility for dark samples, black boats improve contrast for light powders, and blue boats provide a neutral option for general use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePolystyrene (FDA food-grade)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShape\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSquare with easy-pour spout\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSize Options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSmall, Medium, Large\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSmall Dimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.8 x 1.8 x 0.3 in (4.6 x 4.6 x 0.8 cm) | 10mL volume\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eColors Available\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWhite, Blue, Black\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSold As\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePack of 500\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMicrowave Compatible\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFDA Compliant\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes (food-grade)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHeathrow Scientific\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cp\u003eWeigh boats are one of the most consumed disposable items in analytical and QC laboratories. In pharmaceutical development and manufacturing, they are used daily for API weighing, excipient dispensing, formulation ingredient preparation, and dissolution testing setup. Analytical chemistry labs use weigh boats to prepare calibration standards, weigh reagents for solution preparation, and measure precipitates from gravimetric analyses. Environmental testing laboratories weigh filter papers, soil samples, and sediment residues on weigh boats during extraction and digestion protocols. Food science and nutraceutical labs use FDA-certified boats for direct weighing of flavor compounds, vitamin premixes, and food ingredients. In university chemistry and biology teaching labs, the large pack quantity provides continuous supply across a full academic year without mid-semester restocking. The microwave moisture analyzer compatibility adds a direct application in moisture content QC for powdered materials in pharmaceutical and food production.\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eWhat is the volume capacity of each weigh boat size?\u003c\/h3\u003e\n\u003cp\u003eThe Small boat holds approximately 10mL and measures 1.8 x 1.8 x 0.3 inches. The Medium boat is proportionally larger for samples requiring greater lateral spread to distribute the material evenly for moisture analyzer use. The Large boat accommodates bulk samples or larger mass quantities while maintaining the wide, low-profile design that resists tipping. For exact dimensions of the Medium and Large sizes, refer to the specification table in the product listing for those size variants.\u003c\/p\u003e\n\n\u003ch3\u003eCan polystyrene weigh boats be used with organic solvents?\u003c\/h3\u003e\n\u003cp\u003ePolystyrene has limited resistance to aromatic solvents (benzene, toluene, xylene) and chlorinated solvents (chloroform, methylene chloride, carbon tetrachloride), which can dissolve or craze the material. For sample preparation involving these solvents, aluminum or polypropylene weigh boats are recommended. Polystyrene boats are compatible with aqueous solutions, alcohols at low concentration, dilute acids and bases, and most common buffer systems encountered in biochemistry and pharmaceutical testing.\u003c\/p\u003e\n\n\u003ch3\u003eAre these weigh boats suitable for electrostatic-sensitive samples?\u003c\/h3\u003e\n\u003cp\u003eStandard polystyrene weigh boats can generate static charge, which can cause fine powders to adhere to the boat wall and interfere with complete transfer to the receiving vessel. For electrostatic-sensitive powders such as pharmaceutical APIs with very low bulk density, antistatic weigh boats are recommended to prevent powder loss from static adherence. The Black color variant in this product line is the standard version — not treated with antistatic agents. Antistatic weigh boat versions are available as a separate product.\u003c\/p\u003e\n\n\u003ch2\u003eVolume Discounts\u003c\/h2\u003e\n\u003cp\u003eLabSupplies.com offers below retail pricing with volume discounts available. As an authorized Heathrow Scientific dealer, we ship directly from USA inventory. Pack of 500 pricing provides significant per-unit savings versus small quantity purchasing for high-throughput labs.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"Weigh Boat, Square (Pack of 500)\",\"description\":\"FDA food-grade polystyrene square weigh boats with easy-pour spout. Smooth flat surface, microwave moisture analyzer compatible. Small, Medium, and Large sizes in White, Blue, and Black. 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