ACS Grade Hydrochloric Acid, 500mL Chemical_Denatured Ethyl Alcohol Rubber striking disc on a

Rubber striking disc on a handle delivers a clean blow that sets a tuning fork ringing at its fundamental without bruising the tines or coloring the tone with extra overtones

and sliding protractor

Bead-form lab-grade sodium hydroxide that weighs and dissolves cleanly

this 0-250mV moving-coil DC millivoltmeter at plus-or-minus 2

restriction digest analysis

ACS Grade Hydrochloric Acid, 500mL Chemical_Denatured Ethyl Alcohol Rubber striking disc on aACS grade 500mL hydrochloric acid, the analytical purity reagent for HPLC mobile phases, trace metal analysis, and acid procedures where solvent contaminants would interfere with results.