18 × 18 mm Microscope Cover Glass (Coverslips)

Product Overview

18 × 18 mm microscope cover glass is a thin, transparent square sheet placed over a specimen on a microscope slide. Select this footprint to suit the prepared specimen area and the mounting method used in your laboratory.

Key Features

• 18 × 18 mm square format.
• Three separate thickness grades: No. 1, No. 1.5 and No. 2.
• Clear glass for routine transmitted-light microscopy preparations.
• Boxed packing for protected storage and laboratory handling.

Design and Applications

The coverslip forms the upper glass layer of a slide preparation and helps retain the specimen beneath it when used with a suitable mounting method. It is substantially thinner than the supporting microscope slide and must be handled gently.

The square footprint is useful when a compact, equal-sided coverage area is required. Cover-glass thickness should match the objective and imaging method. A thickness grade is not an interchangeable substitute for another grade or for a precision-tolerance coverslip.

Technical Specifications

Ordering Information

Specify the 18 × 18 mm format and one thickness grade when ordering. The three grades are alternative products, not a mixed-thickness box. Request a quotation for the required number of boxes or full cases.

Handling and Storage

• Store in the original closed packaging in a clean, dry environment; protect against moisture and physical impact.
• Handle at the edges with suitable laboratory tools, avoiding fingerprints on the viewing surface.
• Separate coverslips carefully. Do not force stuck sheets apart or use pieces with chips or cracks.
• Follow the laboratory’s mounting and glass-disposal procedures. These standard coverslips are not presented as sterile or tissue-culture-treated.

Frequently Asked Questions

What is the difference between a cover glass and a microscope slide?

The microscope slide is the thicker support for the specimen. A coverslip is the thin sheet placed above it. This product is cover glass.

Which thickness grade should I order?

Use the grade required by your objective and microscopy method. Check the optical system documentation; selecting No. 1.5 does not mean this is a precision No. 1.5H coverslip.

Does the thickness change the length or width?

No. The listed thickness grades use the same 18 × 18 mm nominal footprint. Select the thickness separately from the footprint.

Are these round coverslips or coated cell-culture coverslips?

No. This page describes standard uncoated square or rectangular cover glass in the stated size. Round and specialized coated products are not included.

Request a Quotation

Please include 18 × 18 mm, the required thickness grade and quantity. Use the Message or Email button above to send your requirements. We will confirm the selected configuration and packing in the quotation.

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