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Chalkboard Protractor
Keep any desk spotless by being packaged in a handy screw top tublet
Premium Quality: Tray Flame Red is made of high quality
Premium Quality: Detects residual protein in water in increments of 0
Overall magnification: 10 to 45 x
12 Holes Wooden Test Tube Rack with Stand Sticks Cotton Chalkboard ProtractorIncludes: 12 Hole Deluxe Wooden Test Tube Holder Rack with Heavy Duty Stand Sticks. Premium Quality: Test tubes are made of smooth wood, non toxic and eco friendly. 2 tier design permits convenient insertion and removal of tubes. Each rack features end plates for labeling. Designed for use in professional laboratories but is an ideal choice for science classrooms and household use. If you need custom order with different sizes design, please contact
