Fangrui Product Details Advantage: With Its Stackable , It Allows You To Maximize Your Storage Space By Vertically Stacking Multiple Racks On Top Of Each Other. Made From Material, It Is Built To Withstand Daily Use In Busy Laboratory Environments. Each Hole Has A Scale For Easy Positioning Of Samples, Making It Quick And Efficient To Retrieve Or Place Vials When Needed. Instruction: Insert The Vials Into The Compartments Of The Vial Holder. When You Need To Access A Specific Vial, Simply Locate It Within The Rack And Gently Lift It Out. Application: This Test Tube Rack Provides A Convenient And Organized Solution For Storing And Organizing Autosampler Vials, Helping To Streamline Your Laboratory Work Flow. Suitable For Hplc, , Lc/ms Applications, High-throughput Analysis Sample Preparation, Lab Research, And More. This Tube Holder Offers Versatility In Accommodating Different Lab Needs. Note: That The Tube Rack Is Completely Dry Before Reusing Or Stacking. Specification:10ml Colour:blue Material:plastic Package Conten