US$ 147.50
Wall-mounted Mason's hygrometer with two identical dual-scale thermometers — one dry and one kept wet via a water reservoir — calculating relative humidity from their paired reading difference
5 inches of cording
4 inches without slipping
packaged in a hard plastic case with standard-size pieces
and small motor circuits without bare-terminal hazards
Spore Stain Chemicals Kit for Endospores and Bacterial Spores Subject_Chemistry Wall-mounted Mason's hygrometer with twoSpore stain chemicals kit enables endospore visualization through specialized staining procedures, bacterial classification, and microscopy techniques.
US$ 147.50
US$ 129.50
US$ 147.50