Water quality data relies on sample integrity. Even the most exacting laboratory analysis lacks compensation for improper sample collection, or physical and chemical alteration of a sample due to inappropriate transport and storage.
Correct sampling procedures deliver accurate lab results, a critical component when determining whether you have violated a permit or not. When your results and reputation depend on your sample, depend on Hach brand Sigma Samplers.
SD900 Controller
- Large 5-line display and self-prompting menus make programming easy
- Dessicant changes take place quickly through the side of the sampler without disassembly and without tools
90 MAX
- Easy-to-read 8-line display with an intuitive programming format
- Monitoring of rainfall, level, flow, velocity, pH or ORP, conductivity, and dissolved oxygen


