LaMotte Secchi Disk, Black and White Loose Leaf Paper reliable measurements with included NIST-traceable Gray Paper Reagent:#4167-L** - Manganous Sulfate, 500 ml - Expiry 09/25 Also compatible with liquids B-R-22-6
Yard notes & kiln story
Description
LaMotte Secchi Disk, Black and White Loose Leaf Paper reliable measurements with included NIST traceable Gray Paper Reagent:#4167 L** Manganous Sulfate, 500 ml Expiry 09 25 Also compatible with liquids B R 22 6 reliable measurements with included NIST traceable calibration • Symmetrically cut bib can be reversed to be worn back to front for extended wear