Miles Scientific Analtech Silica Gel G (Gypsum) TLC Plates, Scored & Channelled, Glass-backed, 250 um, 20x20cm, 25/Pk - P01711

Glass-backed Analytical TLC Plates

Miles Scientific Analtech Brand Silica Gel G Thin Layer Chromatography (TLC) Plates, scored & channelled - Glass-Backed - 250µm Thickness - 20x20cm - Box of 25 Plates - 10μm particle, 60Å pore

Product Number: P01711

Weight: 11.10 LBS

• G - (Gypsum) Calcium Sulfate Hemihydrate binder

Analtech Brand Silica Gel G / GF TLC Plates

• Silica Pore: 60Å
• Silica Particle Size: 8-10 μm average
• Binder: Calcium sulfate a.k.a. gypsum (inorganic)
• Hardness: 20-40

Acceptable Solvents: 

All typical chromatography solvents (20% water max)

Visualization Techniques: 

Compatible with essentially all visualization reagents, even sulfuric acid charring. Spraying reagent is suggested; layer is incompatible with aqueous dipping technique.

General Description:

Considered to be the original “Classic” TLC plate. Gypsum (calcium sulfate) binder produces softer layer for easy scraping and removal of spots or bands for further analysis. This is the best choice when preparative work is needed using thicker coatings to isolate larger quantity of material. Because the binder is inorganic, it is compatible with aggressive visualization techniques such as sulfuric acid charring. Limited water tolerance due to slight solubility of calcium sulfate in water precludes dipping procedure but is applicable with spray techniques.

Silica Gel G & GF UNIPLATES are the most widely used silica gel TLC plates. No organic substances are added to these products, thus making them compatible with sulfuric acid charring visualization.

These plates are commonly scraped from the glass backing to isolate separated components for other analytical procedures. They are compatible with all organic solvents, however, they are not recommended for use in systems containing greater than 20% water because of the solubility of the gypsum binder in aqueous solutions. (For water tolerance see the GHL & GHLF series of plates.)The "G" stands for Gypsum and indicates that calcium sulfate hemihydrate (CaSO4·1/2H2O), a refined form of gypsum, has been included in the adsorption formulation.

Gypsum functions as a binder, improving the cohesion of the adsorbent particles and increasing the adhesion of the layer to the glass substrate.The "F" indicates the presence of a short wave UV indicator that is fluorescent at 254 nm.· Fluorescent indicator has green fluorescence at 254 nm· Soft Layers with gypsum binder enable easy scraping of bands from plate· G & GF layers contain no organic materials 

Scored UNIPLATES™

Most UNIPLATES can be supplied with the glass backing scored at specific locations to permit convenient “snapping” into smaller plates. This Analtech feature provides increased versatility and can mean cost savings over plates already cut to smaller sizes.

Different adsorbents, mobile phases, and analytical conditions can be tested quickly and economically. A plate can be spotted, then snapped into several smaller plates for developing in different solvent mixtures to determine the best separation.

A plate can be spotted, developed, then snapped into several smaller plates, and then subjected to different visualization techniques.

Scored UNIPLATES are available in two standard formats:

1. 20 x 20 cm scored UNIPLATES have three score marks 5 cm apart. Each plate can be snapped to produce four 5 x 20 cm plates or any multiple of 5 cm width.
2. 10 x 20 cm scored UNIPLATES have seven score marks 2.5 cm apart. Each can be snapped to produce eight 2.5 x 10 cm plates or any multiple of 2.5 cm width.

Channeled UNIPLATES™

Channeled UNIPLATES are available in a variety of adsorbents and plate sizes including the preadsorbent format. These plates have 9 mm wide adsorbent tracks which are separated by 1 mm wide channels where the adsorbent layer has been removed. Channeled plates prevent cross contamination and the spreading of the sample components during development.