Laboratory watch glasses support sample covering, evaporation, weighing and general laboratory handling across analytical and quality control workflows. Source DURAN glass, soda-lime glass and PP watch glasses through our Laboratory range, with supporting supply options from Labfriend.
Laboratory Watch Glasses
Laboratory Watch Glasses for Covering, Evaporation and Sample Handling
Laboratory watch glasses are shallow concave dishes used to cover beakers, hold small samples, evaporate liquids and support routine weighing or observation tasks. This category includes DURAN glass watch glasses with flame-polished edges, soda-lime glass options with ground edges, and polypropylene watch glasses for routine laboratory handling.
- Visible Product Range: DURAN watch glasses, soda-lime glass watch glasses, PP watch glasses and multiple diameter options for laboratory use.
- Supported Supply: Available through Labfriend and the wider John Morris Group laboratory supply network.
- Material Options: DURAN glass, soda-lime glass and polypropylene options support different heat, chemical and handling requirements.
- Diameter Options: Visible sizes include 40 mm, 50 mm, 60 mm, 80 mm and 125 mm watch glasses, with additional sizes shown across the category range.
- Typical Applications: Covering beakers, evaporating small volumes, weighing solids, drying samples, observing reactions and protecting samples from contamination.
Selecting Laboratory Watch Glasses by Material and Diameter
Correct watch glass selection depends on vessel size, temperature exposure, chemical compatibility and whether the item will be used as a beaker cover, weighing surface or evaporation dish. Borosilicate glass options such as DURAN are suited to higher chemical and thermal demands, while soda-lime glass and PP options are useful for routine covering and handling tasks.
- DURAN Glass: Suitable for laboratories requiring durable borosilicate glass, flame-polished edges and repeatable handling in analytical work.
- Soda-Lime Glass: Suitable for routine covering, sample holding and general laboratory use where high thermal shock resistance is not the main requirement.
- Polypropylene: Useful where lightweight, non-glass handling is preferred and the application is compatible with PP temperature and chemical limits.
- Size Matching: Select a diameter that covers the intended beaker or vessel while allowing safe handling and stable placement.
Related Categories for Laboratory Glassware Workflows
Laboratory watch glasses are often purchased with the glassware, vessels and consumables used in the same bench workflow. Buyers may also need Laboratory Beakers, Laboratory Lids or Covers or Coverslips or Laboratory Supplies and Fixtures for complete setup planning.
- Laboratory: Supports routine analytical, research and quality control environments using glassware and bench consumables.
- Food and Feed: Relevant for food laboratories using watch glasses during sample preparation, evaporation or quality checks.
- Life Science and Diagnostics: Supports laboratories requiring careful sample handling, covering and contamination control during routine procedures.
Australian Support for Laboratory Watch Glass Procurement
John Morris Group supports Australian laboratories, research teams and quality control facilities with laboratory watch glasses, compatible glassware and related consumables. Established in 1952, ISO 9001 certified and backed by factory-trained engineers, our AU team can help match laboratory watch glasses to your vessel size, material preference and application. Contact 1300 501 555 for support.
Frequently Asked Questions
What are laboratory watch glasses used for?
Laboratory watch glasses are used to cover beakers, evaporate small volumes of liquid, hold samples, dry crystals, weigh solids and protect samples during routine laboratory work.
Should I choose glass or PP watch glasses?
Choose glass watch glasses for applications involving heat, chemical resistance or traditional laboratory glassware workflows. Choose PP watch glasses where lightweight handling, reduced breakage risk and compatibility with the chemicals used are the main requirements.
How do I choose the correct watch glass diameter?
Select a watch glass diameter that fits the vessel or beaker being covered and allows stable placement without slipping. The visible range includes smaller 40 mm options through to larger 125 mm options for broader laboratory use.