US$ 16.00
3 glass features 14/23 cone with round end for sealing ground joint vessels and chemistry apparatus
Quartzite hand sample measures 3 inches with recrystallized quartz texture so hard it scratches glass for metamorphosed sandstone identification
Wall-powered halogen ray box producing convergent parallel rays bright enough to trace in normal classroom light
tracheal system
Premium High Resolution Acrylic Spring Balance with Dual Scale Chemical_Bismarck Brown 3 glass features 14/23 coneDual grams and newtons scale on a zero calibratable acrylic spring balance with high resolution subdivisions for precise force and mass measurement in teaching labs.
US$ 16.00
US$ 275.00
US$ 247.50
US$ 39.95
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US$ 16.36
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