13 mm x 100 mm white test tube rack with reinforced autoclavable polypropylene. Peg design allows easy viewing of reacted NicCheck biostrips and image capture via the IntelliQuit mobile app. 96 test tube capacity, overall size 7.25" L x 5" W x 2.75" H. Customers may opt to create a smaller peg test tube rack using our 3D printer file.