Syringe size and unitsSyringe sizeNumber of units the syringe holds1/4 mL or 0.25 mL251/3 mL or 0.33 mL301/2 mL or 0.50 mL501 mL100
The inner pipe for drinking water is made of a plastic called cross-linked polyethylene (PEX). There are no health risks associated with drinking water from PEX pipes. A few types of PEX-pipe may cause prolonged undesirable taste and odour if the water remains in pipes over time.
Polypropylene is the most widely accepted commercial archival storage material in the United States. The polypropylene used in our Ultra Clear Bags is naturally acid free and lignin free and conforms to PAT ISO standard 18916.