![3 Pieces Test Tube Rack for 16mm Tubes 50 Holes Plastic Lab Test Tubes Holder Bracket Stand for Laboratory: Amazon.com: Industrial & Scientific 3 Pieces Test Tube Rack for 16mm Tubes 50 Holes Plastic Lab Test Tubes Holder Bracket Stand for Laboratory: Amazon.com: Industrial & Scientific](https://m.media-amazon.com/images/I/61sAtLYr8jL._AC_UF1000,1000_QL80_.jpg)
3 Pieces Test Tube Rack for 16mm Tubes 50 Holes Plastic Lab Test Tubes Holder Bracket Stand for Laboratory: Amazon.com: Industrial & Scientific
![14mm 40 Hole Aluminum Test Tube Rack Multifunctional Laboratory Test Tube Holder Laboratory Equipment - Laboratory Clamp - AliExpress 14mm 40 Hole Aluminum Test Tube Rack Multifunctional Laboratory Test Tube Holder Laboratory Equipment - Laboratory Clamp - AliExpress](https://ae01.alicdn.com/kf/H981eff1ca0e74302a454db52228806e2z.jpg_640x640Q90.jpg_.webp)
14mm 40 Hole Aluminum Test Tube Rack Multifunctional Laboratory Test Tube Holder Laboratory Equipment - Laboratory Clamp - AliExpress
![SP Bel-Art | SP Bel-Art No-Wire Round Test Tube Rack; For 13-16mm Tubes, 14 Places, Red | SP Bel-Art SP Bel-Art | SP Bel-Art No-Wire Round Test Tube Rack; For 13-16mm Tubes, 14 Places, Red | SP Bel-Art](https://www.belart.com/media/catalog/product/cache/2/image/9df78eab33525d08d6e5fb8d27136e95/1/8/18743-1016_Beauty_35.jpg)