WHEATON® Glass Snap Cap Bottles, 30mL or 1oz, Clear, 34mm Finish. (30 mL Bottle, Sample, Type III Clear, Snap Cap) 30mL Glass Sample Bottle, Clear, Snap Cap. Pre-attached low density polyethylene snap caps; Ideal for collecting, storing, and exhibiting sample in the lab or field; Packaged in corrugated trays with partitions