NEW PACKAGING: One 30 mL amber HDPE bottle yields up to 1 liter after dilution. Use with AA, ICP-OES or ICP-MS and select colorimetric methods. (PLEASE NOTE: We will have mixed packaging for CRM and QR during the transition. Both CRM and QR could be in new packaging or in the original 15 mL screw-cap vial. Please adhere to appropriate instruction sheet for analysis.)