"compound+microscope"

Where does pollution come from? How does it change the water?

Limulus polyphemus. A true "living fossil", this representative of the class Meristomata is one of only five living still in existence. The crab is the most widely studied Meristomata because of their large compound eyes and their copper-based blue blood. It thrives in a marine aquarium such as WARD’S Marine Touch Tank. Culture instructions are included. Size: 1–3". Note: Shipped overnight. Additional shipping fee applies.

Stackable, high-quality metal cabinets can be interlocked for stacking.

Erlab’s HALO Carbon is a ceiling mounted laboratory grade air filtration system working to purify the air from fugitive emissions present in the laboratory, while also providing real-time communication with the laboratory manager and users, of the air pollution levels and 24/7 data.

Erlab’s CaptairFlow Clean Air Enclosures are designed to prevent cross-contamination for applications such as non-pathogenic cell cultures, in-vitro cultures, microbiology, homeopathic preparations, electronics, and optics where product protection is required. They feature a high efficiency filtration system that provides a particle-free workstation around the manipulation, bringing HEPA filtered clean air down to the work surface.

MultiCan® Barrier containers offer a six-layer technology which makes this container a perfect fit for oxygen-sensitive contents and for liquids tending to permeate, such as non-polar hydro-carbon compounds. EVOH barrier containers are particularly suitable for flavors and fragrances, but also for alcohols, paints and coatings, additives, as well as solvents and cleaning agents.

This model is hand made in the USA by Klinger Educational Products.

This model is hand made in the USA by Klinger Educational Products.

Determine Concentrations of Unknowns

This model is hand made in the USA by Klinger educational products.

Erlab’s CaptairStore Filtering Chemical Storage Cabinets will store your active use bottles within a filtered chemical storage cabinet, operating 24 hours 7 days a week. The filter within will ensure no buildup of chemical vapors or odors within the cabinet. No HVAC connection to the outside will be required. Each cabinet has Smart Technology™ - an exclusive set of tools that consists of Smart-Light Communication™, chemical sensors (*optional), real-time status, and the eGuard app.

This model is hand made in the USA by Klinger Educational Products.

Ideally Suited for Advance Level Courses.

How can humans work with the environment?

The NED method is widely used in the quantitative analysis of nitrite and nitrate in water samples. NED readily undergoes a diazonium coupling reaction in the presence of nitrite to give a strongly colored pink azo compound. The intensity of the color is directly proportional to the concentration of nitrite in the sample. Due to the significant intensity of the developed color even at very low nitrite/nitrate concentrations, lower detection limits and measurement ranges are possible vs. chromotropic acid kits. In addition, the nitrate measurement uses only zinc which is less toxic than cadmium, making handling and disposal safer.

The NED method is widely used in the quantitative analysis of nitrite and nitrate in water samples. NED readily undergoes a diazonium coupling reaction in the presence of nitrite to give a strongly colored pink azo compound. The intensity of the color is directly proportional to the concentration of nitrite in the sample. Due to the significant intensity of the developed color even at very low nitrite/nitrate concentrations, lower detection limits and measurement ranges are possible vs. chromotropic acid kits. In addition, the nitrate measurement uses only zinc which is less toxic than cadmium, making handling and disposal safer.