US$ 15.90
sterile technique
Heavy-duty 6 by 4 inch powder-coated steel retort base weighing 4 pounds
offering a spread of spring constants for simultaneous comparison in oscillation and Hooke's-Law experiments
anchoring magnet-strength comparison work across the horseshoe series
7-Piece Bowen's Reaction Series Mineral Specimen Set Type_Low Form sterile techniqueBuilt for igneous petrology teaching, this 7 piece Bowen's Reaction Series set traces the crystallization sequence from olivine through quartz.
US$ 15.90
US$ 11.90
US$ 14.90
US$ 10.90
US$ 11.90
US$ 17.90
US$ 12.90
US$ 12.90
US$ 13.90
US$ 14.90
US$ 12.90
US$ 13.90