- Material is virgin polystyrene
- 3 5/16 inch width x 3/4 inch depth
- Approximate volume is 100 ML
- Extra smooth surface for less waste
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SEOH Plastic Square Weigh Boats Medium Dish 100pk
($1.40 / 10 Items)
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|Number of Items||100|
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These square weigh dishes are manufactured from virgin polyethylene and feature an extra smooth surface and rounded corners to provide easy removal of samples. These weigh boats are safe, economical containers for weighing liquid or powdered samples in the laboratory. They provide accurate pour-outs with minimal sample loss. Versatile and durable, dishes can also be used as quick freeze trays for sample material, discard trays for broken ampules, or mixing trays for small batches.
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These are inexpensive enough to be disposable, though I suspect that some may wash and rinse and reuse them. These are thin plastic, and not really suitable for re-use, but they might last through several re-washes; I have not done that. The plastic seems to be thin milk-jug type and does not hold onto the dye powder much, but there is always some left in the weighing boat.
I use a flask and magnetic stirrer to mix my dyes, so I start the liquid stirring, getting a weak vortex, and then add all the powders to the liquid at once. The magnetic stirrer does all the mixing and usually in a minute or so the volume is mixed well.
When using alginate, it is necessary to allow time for the alginate to "bloom"; I usually allow several minutes to be sure that the alginate is well disbursed, then remove the stirbar and impatiently wait for the alginate to bloom and thicken (some times having to wait for 12-48 hours to get good thickness).