Nalgene® Sample Bottles, High-Density Polyethylene, with Caps, I-CHEM ™, Thermo Scientific. Supplier: I-Chem. Description: Narrow mouth and wide mouth bottles, available in natural and amber, are for use in the analyses of metals. ,IRN301-0250CS,IRN301-0500CS,IRN319-0500CS,IRN311-0250CS,IRN301-1000CS,IRN311-0500CS,IRN311-1000CS.