Small Fermentation Tube, Borosilicate Glass Chemical_Gram Stain Relict xenocrysts in sample record

Relict xenocrysts in sample record the direction of stress during alteration

Optical-quality equilateral glass prism at 26 by 26mm

Two-ball loop-the-loop apparatus on a 24-inch track with a vertical loop

Plano-cylindrical lens at 50 by 50mm with 17 diopter optical power and ground polished edges

the easier-handling pellet shape for nitrogen-fertilizer chemistry investigations and resin-and-adhesive precursor demonstrations in classroom labs

Small Fermentation Tube, Borosilicate Glass Chemical_Gram Stain Relict xenocrysts in sample recordSmall fermentation tube in borosilicate glass without foot supports yeast respiration experiments and biology fermentation investigations.