LW Scientific Hollow Ball Bath Blanket 10mm. Use them instead of a lid on your water bath. Immerse your tubes through the ball thermal layer and never have to worry about removing a lid and replacing it The thermal ball layer retains the water vapor and the heat Because it is so efficient at retention it lowers the work load on your water baths heaters and motors making them last longer and use less energy. Specifications for LW Scientific Hollow 2500 Ball Bath Blanket/10mm: Manufacturer: LW Scientific Volume: 10 ml Package Contents: LW Scientific Hollow 2500 Ball Bath Blanket/10mm LW Scientific TBL-PP10-2500: Hollow 2500 Ball Bath Blanket 10mm