Bel-Art H13182-1015 Clavies Transparent 10W x 15 in. H Autoclavable Bags; Polypropylene, 2 mil Thick (Pack of 100)

Not just for test tubes, the nylon bristles are great for cleaning all sorts of surfaces.
It's also very flexible, you can bend it around for hard to reach places.

Product Name : Test Tube Brush;Material : Bristles, Metal
Color : Gray, Beige;Brush Size : 11.5 x 2.7cm/ 4.5" x 1" (L*Max.D)
Handle Size : 15.5 x 0.2cm/ 6.1" x 0.07" (L*D);Total Length : 27.5cm/ 10.8"
Net Weight : 51g
Package Content : 5 Pcs x Test Tube Brush
Product Name : Test Tube Brush;Material : Bristles, Metal
Color : Gray, Beige;Brush Size : 11.5 x 2.7cm/ 4.5" x 1" (L*Max.D)
Handle Size : 15.5 x 0.2cm/ 6.1" x 0.07" (L*D);Total Length : 27.5cm/ 10.8"
Net Weight : 51g
Package Content : 5 Pcs x Test Tube Brush

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