3D Neptune Trident Bottle Tube Guide 3 pack Goni Large size frag plug with

Large size frag plug with at least 3 large polyps

mouth teal blue

by raising it too high

6 Hole up to 1/4" outside diameter tubing

Large - 1"+long

3D Neptune Trident Bottle Tube Guide 3 pack Goni Large size frag plug with3D printed guides for Neptune reagent bottles. Inserts into the cap of your Trident reagent bottle lids and keeps the sample tube perfectly vertical. Prevents the tube from going askew and pulling in air when reagent is low and giving false readings. Wider opening at the top to accommodate the rubber tubing metal tube, with a narrower opening at the bottom to secure the metal tube. Vent hole at the top to allow air into the bottle as reagent is drawn