Antistatic Weigh Boats and Weighing Funnels for Analytical Balances

Weighing dishes and funnels are disposable antistatic consumables used on analytical and top-loading balances to weigh solid and liquid samples and transfer them quantitatively into flasks, tubes, and reaction vessels. Weighing dishes (weigh boats) are molded from antistatic polystyrene in square, hexagonal, and pour-boat shapes at 10–350 mL capacities; weighing funnels are antistatic polypropylene with one flat balance-stable side, sized from extra-small (microtubes) to extra-large (1000 mL flasks). MBP carries Globe Scientific antistatic weighing dishes and funnels (ISO 9001:2015) and ships to labs across the US, Canada, and internationally.

Need help selecting the right weighing dishes or funnels for your laboratory workflow? — Contact our team at customerservice@mbpinc.net for product recommendations, bulk pricing, and purchasing assistance.

Weighing Dishes & Funnels

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What Are Laboratory Weighing Dishes and Funnels?

Laboratory weighing dishes and funnels are disposable antistatic consumables used in gravimetric sample preparation—where solid or liquid materials are weighed on analytical or top-loading balances before being transferred into reaction vessels, volumetric flasks, or tubes. Weighing dishes (also called weigh boats or pour boats) are flat-bottomed antistatic polystyrene containers used to hold samples on the balance pan during weighing. Weighing funnels are antistatic polypropylene tools with one flat side for stability on the balance and a conical stem designed to fit flask necks, allowing complete quantitative transfer of material with minimal loss. Globe Scientific offers antistatic PS weighing dishes in square, hexagonal, and pour-boat formats ranging from 10 mL to 350 mL, and antistatic PP weighing funnels in extra-small through extra-extra-large sizes. Both are single-use only because washing removes antistatic properties and affects weighing accuracy.

What you will find:

Weighing Dishes: The Precision Interface – In the journey from balance to vessel, every milligram counts. Our dishes are the specialized bridges that ensure your "calculated mass" actually reaches the reaction.
Funnels: High-Flow Transfer Logic – Stop the "glugging" and the spills. Our funnels are engineered to handle the physics of fluid and powder movement for a seamless bench workflow.

How to Choose Weighing Dishes and Funnels

Weighing Dish Shape

Square weigh boats are used for routine laboratory weighing and are designed with sloping sides and recessed corners to minimize sample loss during transfer. Hexagonal weigh boats provide better stability on balance pans due to their molded edges and also offer improved grip during handling, making them suitable for workflows where stability matters. Pour-boat designs include a built-in spout that allows controlled and accurate dispensing of liquids or viscous samples into receiving vessels without spillage.

Weighing Dish Capacity

Small 10–20 mL dishes are used for micro-scale weighing of reagents typically under 2 g on analytical balances. Medium 50–100 mL dishes are used for routine laboratory weighing of 2–20 g samples. Large 200–350 mL dishes are used for bulk powders and higher-volume transfers on top-loading balances.

Weighing Funnel Size

Extra-small funnels are used for 5–20 mL vessels and microtubes, small funnels for 20–50 mL, medium funnels for 50–200 mL, large funnels for 200–500 mL, and extra-large funnels for 500–1000 mL flasks. The flat side ensures stable placement on the balance pan during weighing before transfer.

Color: White vs. Black

White dishes provide high contrast for dark or strongly colored samples, making them easier to visualize during transfer. Black dishes are used for light-colored or transparent samples where residue visibility is important, especially when confirming complete sample recovery.

Compare Weighing Dish and Funnel Formats

Square weigh boats (10–350 mL) are made of antistatic polystyrene and used for routine powder and liquid weighing. Hexagonal weigh boats (20–350 mL) provide improved stability and grip due to their molded structure. Pour boats (20–100 mL) include a spout for controlled dispensing of liquids and viscous samples. Weighing funnels are made of antistatic polypropylene and come in multiple sizes from extra-small to extra-extra-large for quantitative transfer into flasks and tubes. Aluminum weigh dishes (20–100 mL) are used for high-temperature applications such as moisture analysis and can withstand temperatures up to 300°C.

Specifications Context

Globe Scientific antistatic polystyrene weighing dishes operate within −10°C to +80°C and resist dilute acids, bases, and alcohols. The antistatic formulation is a specialized grade designed to reduce static charge and prevent sample loss during weighing and cannot be replaced with standard polystyrene labware. As of 2026, 20 mL and 100 mL antistatic weigh boats are widely used in pharmaceutical QC laboratories, research facilities, and academic analytical chemistry workflows where accuracy and contamination-free handling are required.

Keep sample handling clean and consistent—MBP supports your workflow with reliable weighing dishes and funnels designed for real lab conditions.

FAQ

Laboratory weighing dishes (also called weigh boats or pour boats) are disposable antistatic polystyrene containers used to weigh solid and liquid samples on an analytical balance before transferring them into a flask, tube, or reaction vessel. Laboratory weighing funnels are antistatic polypropylene single-use funnels designed to transfer weighed powders and liquids from a balance pan directly into volumetric flasks, centrifuge tubes, or narrow-neck containers without spilling. Both are standard consumables in gravimetric chemistry, pharmaceutical weighing, and sample preparation workflows.

Static electricity causes powdered and granular materials—including APIs, reagents, dried biomass, and fine chemicals—to cling to dish walls, funnel surfaces, and balance pan edges rather than transferring cleanly to the target vessel. This results in measurable sample loss that introduces quantitative error into preparation steps. Antistatic polystyrene and polypropylene are treated with a surface additive during manufacture that dissipates static charge; this is why antistatic weighing dishes and funnels should be used as single-use disposables—washing removes the antistatic treatment.

A weighing dish (or weigh boat) is a flat-bottomed container used to hold a sample on the balance pan during mass measurement, then bent or tipped to pour the sample into a receiving vessel. A weighing funnel combines the sample-holding function with a built-in conical stem that fits directly into the neck of a volumetric flask or tube, enabling complete quantitative transfer by rinsing through the funnel—eliminating the separate step of pouring from a dish. Use a dish when the receiving vessel has a wide neck; use a funnel when complete transfer into a narrow-neck volumetric flask is required.

Standard laboratory weighing dishes are molded from a special grade of antistatic polystyrene (PS) that resists dilute acids, aqueous solutions, alcohols, and bases. They withstand temperatures from −10°C to +80°C. Aluminum weighing dishes are available for applications requiring higher heat tolerance (up to 300°C) such as moisture determination by oven drying. Globe Scientific weighing dishes are ISO 9001:2015-certified, biologically inert, and contaminant-free, available in square, hexagonal, and pour-boat shapes.

Globe Scientific antistatic polystyrene weighing dishes are available in capacities of 10 mL, 20 mL, 50 mL, 100 mL, 200 mL, 330 mL, and 350 mL, in square and hexagonal formats. The 20–100 mL dishes suit routine analytical and preparative weighing; the 330–350 mL dishes handle large-sample or bulk-powder weighing. Black and white color options in the 10 mL square format help visually confirm complete sample recovery against light or dark materials.

Antistatic polypropylene weighing funnels are available from extra small (fits 96-well microtubes and 5–20 mL volumetric flasks) through extra large and extra-extra large formats for 250–1000 mL vessels. The micro size fits microwell plates directly. One flat side on each funnel allows the unit to rest stable on a balance pan during weighing. Antistatic properties are manufacturing-applied and degrade with washing; these funnels are single-use disposables.

MBP carries Globe Scientific antistatic polystyrene weighing dishes (square, hexagonal, and pour-boat formats) and antistatic polypropylene weighing funnels, both in case quantities for routine analytical and preparative lab use. Globe Scientific is ISO 9001:2015 certified. MBP ships to labs across the US, Canada, and internationally and is a registered vendor for Howard Hughes Medical Institute, Vanderbilt University, and MD Anderson Cancer Center.

Antistatic weighing dishes and funnels are manufactured as single-use disposables. Washing with detergent or organic solvents removes the antistatic surface treatment, restoring static build-up on subsequent uses and compromising quantitative transfer accuracy. For critical weighing operations, always use a new dish or funnel from an unopened package. If cost justifies reuse in low-precision applications, confirm that the antistatic requirement is not critical for the specific material being weighed.

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