Watch Glass 200 mm / 8"# 110-114 Walter Stern
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A concave, clear, annealed glass cover with fire-polished edges. Watch glasses are useful in any laboratory and can be used to cover beakers or flasks, reducing evaporation of volitile liquids or solids during sample preparation.
The 200 mm watch glass will cover a 4000 or 5000 mL beaker.
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