Suitable for general purpose laboratory applications, lightweight, leakproof. Alternatively made of PEHD or PPCO, chemically compatible with a wide variety of lab reagents. Shatter-proof. PEHD: EPA-specified sample bottle material for a wide variety of inorganic compound and elemental analyses. PPCO: Autoclavable. Suitable for general purpose laboratory applications, lightweight, leakproof. Alternatively made of PEHD or PPCO, chemically compatible with a wide variety of lab reagents. Shatter-proof. PEHD: EPA-specified sample bottle material for a wide variety of inorganic compound and elemental analyses. PPCO: Autoclavable.