VWR® SuperSlips™ Micro Cover Glasses, Rectangular, No. 1These cover glasses are corrosion-resistant and uniformly thin and flat. The processing techniques result in superior cleanliness. Superslip coverslips combine specialized production methods with moisture-resistant packaging to prevent sticking. Suitable for applications in humid environments. Thickness: 0.13 to 0.17mm. Supplied in 1 oz. increments.