KNOW YOUR BOTTLE

Material	Clarity	MVTR*	O₂**	CO₂**	Impact Strength	Recycle Code
PET (Oriented or Stretch Blown Polyethylene Terephthalate)	Excellent	2.0	75	540	Good	1
HDPE (High Density Polyethylene)	Poor	0.5	4,000	18,000	Good	2
PVC (Polyvinyl Chloride)	Good	3.0	150	380	Fair	3
PP (Polypropylene)	Poor	0.5	3,500	7,000	Fair	5
PS (Polystyrene)	Excellent	10.0	6,000	18,700	Poor	6
PLA (Polylactide – Oriented/Stretch Blown bottles)	Very Good	18-22	38-42	201	Good	7

_{*MVTR stands for Moisture Vapor Transmission Rate in g-mil/100in. 2/24hr. MVTR is a measure of the passage of gaseous H2O through a barrier. The lower the rate, the longer the package protects its contents from moisture and ensures the moisture content of the product remains the same.}

_{**O2 and CO2 stand for Oxygen Transmission Rate (OTR) and Carbon Dioxide Transmission Rate (COTR) in cm3-mil/m2/24hr. OTR and COTR are measures of the amount of gas that passes through a substance over a given period. The lower the readings, the more resistant the plastic is to letting gasses through.}