Molded of polymethylpentene, this graduate is transparent and shatterproof. It cost substanitally less than glass. The graduates feature remarkable heat tolerance and excellent chemical resistance. It is graduated in ounces and mililiters. The volumes read easily, no meniscus. The smaller sizes are useful as measuring graduates because the flared wide-mouth opening is easy to fill. The octagonal base provides stability and prevents rolling or tipping. Autoclaving does not alter accuracy.