Discover the precision of Erie Scientific Micro Cover Glasses, designed for optimal microscopy. These square cover glasses measure 18x18 mm and are classified as No. 2, providing a thickness of 0.17 mm for superior clarity and minimal distortion. Ideal for laboratory use, they ensure excellent light transmission and are perfect for various biological and chemical applications. Each box contains high-quality, durable glass that resists scratching and staining, making them a reliable choice for researchers and educators alike. Elevate your microscopic observations with Erie Scientific's trusted craftsmanship!