Products › Duo-Mix Dropper D0161 Image 1 of 1 Duo-Mix Dropper D0161 US$0.00 Dual chambered dropper.Suitable for liquid + liquid formulations.Contents remain sealed and separate before use.Contents are mixed entirely within the packaging upon activation. Add To Cart Added! Dual chambered dropper.Suitable for liquid + liquid formulations.Contents remain sealed and separate before use.Contents are mixed entirely within the packaging upon activation.