TSS Filters are recommended for use in Standard Methods 2540 C and 2540 D. Optimized surface characteristics of this binderless borosilicate glass microfiber filter eliminates pin-holing and fiber-she

Hach Grade AE filters are comparable to Pall Type A/E filters and the 47mm diameter is compatible with the magnetic filter holder #1352900. Filters feature fast flow rates, fine porosity and particle

Provides simple, fast, economical method of pH measurement. Sharp color change for each 0.5 pH unit. Can be used with handy dispenser (Product No. 2611000). Convenient for sample pH adjustments. Recom

30 Minute rapid test for measuring toxicity of pH, temperature, specific chemicals, individual influent streams or wastewater to biological systems. A blend of specialized microbial cultures in an eas

The handy Stopper / Tubing Sizer easily determines the correct size of the cork or stopper needed for any flask, bottle, etc. Two scales are provided: one for rubber and vinyl stoppers and the other f