Borosilicate glass KIMAX-51 composition assures the best all-around chemical durability of commercial glasses now available for laboratory ware. Complies with ASTM Specification E438, Type I, Class B glass requirements. KIMAX-51 has excellent chemical resistance against sodium leaching - a factor common in soda lime glass products. These are premium quality tubes with sturdy, uniform bottoms and consistent lengths.

• Tubes are packed in convenient trays for ease of use on bench tops and in drawers
• Trays are shrink-wrapped in plastic film with tubes remaining in constant alignment for protection against in-transit breakage and contamination
• Designed from ASTM Specification E890
• The 10 and 12 x 75 mm sizes are suitable for cell washing procedures
• The 6 x 50 mm size is often referred to as a "Durham tube"