Thickness No. 1.5 (0.16 - 0.19 mm). Made of chemically resistant borosilicate glass D 263™ M of the first hydrolytic class. Absolutely colourless, perfectly clear, suitable for fluorescence microscopy. In compliance with DIN ISO 8255. Approved for in-vitro diagnostic (IVD) applications according to IVD directive 98/79/EC, with CE - mark and batch number for comprehensive information and traceability.