Humboldt State University ® Department of Chemistry Robert A. Paselk Scientific Instrument Museum The Chemical Refractometer 1874 - 1970 Richard A. Paselk, Curator Refractometry has been a major tool in the chemical laboratory to determine concentrations of solutions and as an aid in identifying unknown substances since the late nineteenth century.
Buy with confidence! I am proud of my 100% customer approval rating.Thermo Scientific Pipet Filler Model 9531 Color: RED! (Much cooler than white) : )Never used - Box is torn, everything is included except wall mount.
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