Injection molded of polypropylene or linear polyethylene, these containers are virtually indestructible in normal use Inert to most lab chemicals including formaldehyde, weak acids, organic solvents and all bases Stable, wide-mouth design allows for ease of filling and is less likely to tip over, even when stacked Tight-fitting, snap-cap lids keep odors in and minimize chance of leakage Contents are visible on contact with translucent plastic walls Resistant to boiling and freezing temperatures