New Pig monitoring well skimming sock. These small-diameter absorbents are just the right size for monitoring well maintenance. Small-diameter sock absorbs oil but not water. Simply lower this floating sump skimmer into a monitoring well to absorb oils without taking in any water. Polypropylene skin resists tearing; meets NFPA 99 standards for static decay. Polypropylene loop can be attached to rope (not included) for easy deployment and retrieval. Absorbs and retains oils and oil-based liquids - including lubricants and fuels - without absorbing a drop of water. Bright white color makes absorbed oil easier to see; clearly shows saturation level. Can be incinerated after use to reduce waste or for fuels blending. Fluids absorbed: oil-based liquids but not water. Absorbency: up to 4 gallon per box. Composition: Polypropylene skin and filler.