"Sample+Dippers"

A set of 15 samples of different materials used to challenge students to identify materials based on measurement of their density. For some specimens this will be straightforward. In other cases, it will lead to a discussion of uncertainty in measurements and data, and to an awareness that different materials may have nearly the same density.

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.

Use this hematologic stain to facilitate the differentiation of blood cell types in histological samples.

Economical plastic test tubes.

The Pyramid Transportable Glove Enclosure is designed to protect the user during the collection, transportation, investigation, and storage of samples or evidence. It is a multi-function reusable disposable glove bag made of high-quality transparent PVC.

Ideal for individual student use.

Ceric sulfate is the titrant and ferroin is the end point indicator. The method is free from glycol interference in samples that contain up to 75% glycol, making it particularly applicable to systems that contain nitrite corrosion inhibitors. Results are expressed as ppm (mg/L) NaNO2.

Gamma Spectroscopy detector.

5 to 10 ml test tube with cap for Octa slide.

Thsese tubes meets GLOBE requirements.

Economical and compact, this microtube rack comes pre-assmbeled and ready to hold up to twenty-four 1.5–2.0 ml microtubes. Its clearly labeled holes make sample identification easy, while its compact design saves benchspace and makes for easy storage.

Use natural balsam canada resin in xylene as a mounting medium to prepare permanent sample slides.

A synthetic resin alternative to natural balsam canada resin in xylene that can be used as a mounting medium in preparing permanent sample slides.

These conical centrifuge tubes are sterile with imprinted graduations up to 15 ml.

Pre-cleaned borosilicate glass test tubes with rims. Tubes can be used for hot or cold applications, are reusable, and can be autoclaved.

Pre-cleaned borosilicate glass test tubes without rims.