Chromatography TLC Plates, 'Polygram' Pre-Coated
Product Code : EL-C-10970
Quick answer: Chromatography TLC Plates, 'Polygram' Pre-Coated carry a 0.25 mm silica gel layer with a fluorescent indicator on a 0.2 mm polyester sheet that resists common TLC solvents. Compounds that absorb UV show up as dark spots under a UV lamp, and the sheets can be rolled or cut to fit a tank. Lab Exports supplies them as a reseller to schools, colleges and universities.
Specifications
| Item | Detail |
|---|---|
| Carrier sheet | Polyester, 0.2 mm thick, resistant to common TLC organic solvents |
| Coating | Silica gel, 0.25 mm layer |
| Indicator | Fluorescent indicator |
| Handling | Can be rolled to fit chromatography cylinders or cut with scissors |
How the TLC experiment is done
The silica gel layer is the polar stationary phase, and a solvent drawn up the sheet by capillary action is the mobile phase. Components of a mixture that are held less strongly by the silica travel further, so the mixture separates into spots, each identified by its Rf value: the distance moved by the spot divided by the distance moved by the solvent front.
Many organic compounds are colourless, which is where the fluorescent indicator helps. Under a UV lamp the layer glows, and any compound that absorbs UV light blocks the glow and appears as a dark spot, which can be ringed in pencil without spraying a locating reagent.
- Cut or roll the sheet to fit the tank or chromatography cylinder.
- Mark a pencil start line and spot the samples on it.
- Develop the sheet in a covered tank with the solvent below the start line.
- Dry the sheet and view it under a UV lamp; ring the dark spots in pencil.
- Measure the distances and calculate the Rf value of each spot.
Key features
- Silica gel layer 0.25 mm thick
- Fluorescent indicator for viewing spots under UV light
- 0.2 mm polyester carrier that withstands the organic solvents commonly used in TLC
- Can be rolled to fit chromatography cylinders
- Cuts with scissors into smaller plates
Documentation and supply
Lab Exports supplies the Polygram TLC plates as a reseller; it is not manufactured by Lab Exports. It is supplied from Delhi to schools, colleges and universities in India and 60+ countries, with the export documents for each shipment. More about the company is on the About Lab Exports page.
Related Chromatography products
- Chromatography TLC Plates (EL-C-10969)
- Hot Air Blower (EL-C-10971)
- Chromatography Separation Ink (EL-C-10972)
- Chromatography Column, Pyrex (EL-C-10973)
The full range is in the Chromatography section of the Chemistry Lab range.
Frequently asked questions
Do the Polygram TLC plates have a fluorescent indicator?
Yes. The silica gel layer contains a fluorescent indicator, so UV-absorbing spots show up under a UV lamp.
Can the Polygram sheets be rolled?
Yes. The 0.2 mm polyester carrier can be rolled to fit chromatography cylinders, or cut with scissors into smaller plates.
What is the price of the Polygram TLC plates?
Prices are not published on the website. Add the Polygram TLC plates to the Enquiry Cart with the Add To Cart button on this page, or email [email protected] with the house code EL-C-10970 and the quantity, to receive a quotation.
Is the Polygram TLC plates made by Lab Exports?
No. Lab Exports supplies the Polygram TLC plates as a reseller under house code EL-C-10970. It can be quoted together with other laboratory equipment in one enquiry.
Request a quote
Email [email protected] with the house code EL-C-10970 and the quantity, or add the Polygram TLC plates to the Enquiry Cart with the Add To Cart button on this page. Tender buyers can also see the Tenders and OEM page.
