Graduated with writing area, impervious to fluids and shatterproof. With the tamper-evident opening band: Beakers are supplied with a lid fitted, whereby the first time it is unscrewed, the opening ring becomes detached, thus ensuring the intactness or sterility (optional) of the beaker contents.Temperature stability -50 to +100 °C. Suitable for universal use in the laboratory for non-human and non-medical samples.