Gemplers One Gallon 128 oz Polypropylene Measuring and Calibration Pitcher is molded in highdensity, 100 virgin polypropylene for excellent chemical resistance and durability Graduated with printed ounce and milliliter markings ltstronggtNOTEltstronggt As expensive as some pesticide concentrates are, always calibrate any measuring cup for accuracy Because they are massproduced, there is a 5 chance of error