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90mm Plastic Petri Dish with Lids, 2 Divided Petri Plates, 5 Pack for Lab

Precise Fit, Reliable Seal: This kit includes an 90×14 mm/3.54×0.55 inch petri dish and an 89 mm/3.5 inch diameter lid, ensuring safe storage and protecting the contents for more reliable experimental resultsSmooth and Uniform Bottom: A 0.5 mm wall thickness ensures a consistent molding process and a smooth bottom.

90 mm Diameter Watch Glass, 3 Packs Beaker Cover Smooth Edges Chamfered Arc

This watch glass is mainly used in the laboratory and in homes, such for suspension drop culture tests, beaker covers, temporary storage of liquid and solid samples, corrosive substances weighing, paint mixing, etc. SpecificationColor: TransparentMaterial: GlassDiameter: 90 mm/ 3.54”Thickness: 2 mm/ 0.08”Weight: 88 gPackage Content: 3 x Watch GlassAdvantageThe glass is made of table glass with high chemical durability, which has corrosion resistance, which can effectively keep the material pure, increase the liquid surface area to accelerate evaporation, etc.Instruction1. Before use, the watch glass needs to be washed and dried, which can effectively avoid the influence of other substances on the experimental results.2.