Beschreibung
Watch glass dishes, 50 mm diameter, are versatile shallow glassware items used for covering beakers, evaporating small liquid volumes, weighing powders and observing crystallisation in chemical, biological and teaching laboratories. They are manufactured from soda-lime glass of the 3rd hydrolytic class and remain free from cadmium and lead. Fire-polished edges provide a smooth, chip-resistant finish that improves handling safety during frequent use. Each set contains 10 pieces, with larger bulk configurations of 30 × 10 pieces supporting high-volume laboratory inventories. These watch glasses from manufacturer Marienfeld feature a practical outer diameter of 50 mm that matches common small vessels and crystallising dishes. The soda-lime glass construction offers good clarity and economy for routine aqueous work while maintaining consistent dimensions. Typical tasks include protecting samples from dust, limiting evaporation, drying residues and serving as temporary lids. Reliable material quality and clean edges make the dishes suitable for both research and educational environments where reproducible everyday glassware is required.
This article is part of Watch glasses & crystallising dishes, in Dishes, crucibles & porcelain.
Key features
- Pack size: 10 pc(s)
- Outer diameter: 50 mm
- Material: Soda-lime glass
- Hydrolytic class: 3
- Edges: Fire-polished
- EAN: 4250317303417
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Questions about Watch glasses 50 mm diameter,
What is this article?
Watch glasses 50 mm diameter, is the article on this page. Luminix Health distributes Marienfeld for laboratory use. It sits in Watch glasses & crystallising dishes, inside Dishes, crucibles & porcelain, in Laborbedarf.
A watch glass is a shallow curved cover or a dish for drying a few grams. A crystallising dish is the flatter, wider dish a solution is left in while a solid comes out. Neither is volumetric. Diameter is the specification.
A dish is an open vessel for drying, evaporating or holding a solid. Porcelain and glazed ceramic take a higher temperature than borosilicate glass, which is why a crucible, not a beaker, goes into a furnace. A watch glass covers, or holds a small amount for drying. A mortar is for grinding. The temperature and the chemical, not the shape alone, choose the material. Laboratory ware of this family is listed under ISO laboratory ware.
Which category should I open next?
The category is Dishes, crucibles & porcelain. The sub-category is Watch glasses & crystallising dishes. The catalogue is Laborbedarf.
Shelves beside this one are Crucibles, Trays, bowls & tubs, Mortars & pestles, Evaporating dishes and Dishes (other).
What should I check before I order?
When this page shows a safety data sheet, use that manufacturer file. Hazard text does not belong in the sales description. For a pack size, a grade or a certificate that is not on the page, send a quote request or contact the team.
How does ordering and shipping work?
Luminix Health distributes this article from the heart of Europe. Articles in stock ship within 2–5 business days. Standard delivery is free from €250 excl. VAT. Cold-chain goods and dangerous goods under ADR are never included in that free delivery. The terms are in the Shipping Policy. The full brand index is on shop by brand. Who we are is on about us.
Which other categories should I open?
The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.