Transparent Spotting Guide may be used with plates up to 20 x 20 cm. The guide rests above the surface of the plate without contacting the adsorbent layer, avoiding damage to the layer. It accurately positions micropipettes and syringes, even when the plate is removed for drying between applications. The metric scale on the Spotting Guide facilitates reading of Rf values. Standard area circles of 3 to 255 mm2 aid in estimating spot sizes.

Learn the principles of ion-exchange chromatography.

Isolate a carbohydrate-binding lectin protein from an extract of jack bean meal.

Students learn the fundamentals of paper and thin-layer chromatography (TLC) as they answer the inquiry question, “What colors my food?”

Investigate the oldest documented technique used to separate chemical substances.

Used in chromatography studies. United Scientific Supplies Chromatography Strips are 15 x 2cm in size.

In this activity, students will perform a paper chromatography experiment on three known amino acids, and then use their results to identify the components of an unknown amino acid mixture.

Learn how TLC is used to separate out compounds.

See that commercial food colors contain more than meet the eye.

Separates different components of a mixture with chromatography.

Purified fractions of DNA and RNA are analyzed by agarose gel electrophoresis.

Introduces students to ink chromatography and its application in solving forensics cases.

Develop understanding of thin layer chromatography, use Rf values to establish standards and use Rf standards to identify 'unknowns'.