Gratnells Storage 56 Test Tube Foam Insert. A useful foam insert that allows you to carefully store lab test tubes
* Compartments measurements are 24mm in diameter
* 108 compartments
* Fits Gratnell F2 deep trays SUK: LAB-SGF2(colour)-284                                                                 * Gratnell F2 Tray Lid is available SUK: SGLID06-284