... ,13*78,12*100,13*100,15*100,16*100,etc with cap or not,can do color ... test tubes:Manufactured from virgin polystyrene and polypropylene. with and without caps. Top quality and various size.Polystyrene ... and are not autoclavable.They are suitable for use with aqueous solutions, mild bases and weak acids but ... at 120°C.They are suitable for use with most common acids, solvents and alkalis at room ...