SDWA Solids (Total Solids, TSS, & TDS) Back Catalog number: 55161 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended DF-IS-E40 Mass-Labelled PCDF Internal Standard Solution, 1.2ml, nonane Price on request 678238 Phosfolan, 100 µg/ml, Cyclohexane, 1ml Price on request 55016 WS pH @ 25°C Price on request