✔ The beaker is made of PTFE, which is resistant to acid and alkali, suitable for laboratory experiment. 

✔ The inwall of the beaker is lubricated and not sticky for clarity, strength, heat, and chemical-resistance 

✔ 50ml, 100ml, 250ml, 500ml 4 different size beakers are available of different volume to meet your needs. 

✔ This is designed for school laboratory, educational equipment, help students discover the science. 

✔ The beaker can withstand high temperature and is corrosion resistant.