Prime Lab Solutions narrow-mouth laboratory bottles are iconic, and utilized in labs throughout the globe. The narrow mouth provides more controlled pouring than wide-mouth bottles, and each one comes with our leakproof* guarantee. Choose from our rugged lab-quality bottles and enormous lab bottles, lower cost lighter-weight economy bottles. These bottles are made only from the best quality plastic materials that meet pharmaceutical, laboratory and food grade standards; our plastic resins are selected to reduce additives and reduce potential leachables. These containers are made from a wide variety of plastic types (HDPE, LDPE, PP{PPCO}) to meet the needs of virtually any laboratory application.