0.04% Aqueous Bromothymol Blue Indicator Standard_ASTM transmitting light end-to-end via total

transmitting light end-to-end via total internal reflection to give a tabletop analogue of a fiber-optic cable

Three-legged spherometer with legs spaced 40 mm apart and a vertical scale reading -10 to +10 mm at 0

Three output modes — rev/s

and is 4" in diameter at its widest point

Twelve polished stainless steel dual-end Chattaway spatulas at 4 inches each combine flat and bent ends for micro-sample scooping and scraping

0.04% Aqueous Bromothymol Blue Indicator Standard_ASTM transmitting light end-to-end via totalAqueous bromothymol blue pH indicator that shifts from yellow to blue across pH 6. 0 to 7. 6, widely used in photosynthesis, respiration, and acid base demonstrations.