Miles Scientific Analtech Silica Gel H (Binder-free adsorbent) Prep TLC Plates with 0.33% Carbomer (pH 7), Glass-backed, 750 um, 20 x 20 cm, 25/Pk - P70019

Glass-backed Prep TLC Plates

Miles Scientific Analtech Brand Silica Gel H Prep Thin Layer Chromatography (TLC) Plates, with 0.33% Carbomer (pH = 7) - 750µm Thickness - 20x20cm - 25 plates per Box - 19μm particle, 60Å pore

Product Number: P70019

Weight: 15.10 LBS

• H - Binder-free adsorbent

Carbomer (0.33%) Modified Silica Gel H UNIPLATES™

These very specialized plates are prepared according to several Pharmacopoeia methods. They are used in the analysis of mannitol/sorbitol.

NOTE: These plates are very fragile and will most definitely arrive with silica flaked off of the plate. This has always been the case with these very custom TLC plates. This warning is given because these plates are not returnable.

Analtech Brand Silica Gel H / HF TLC Plates

• Silica Pore: 60Å
• Silica Particle Size: 19 μm average
• Binder: none
• Hardness: 1-8

Acceptable Solvents:

All typical chromatography solvents (20% water max)

Visualization Techniques:

Compatible with essentially all visualization reagents, even sulfuric acid charring. Spray reagent only. Dipping not recommended.

General Description:

Very soft surface as no binder is used to adhere the layer to the glass backing. Requires extra caution during use to prevent damage to the layer, which would affect chromatography. However, it is sometimes required when the separation being run is sensitive to any materials other than silica gel in the chromatographic process. Compatible with most mobile phases except water in excess of about 20%. Dip visualization procedures not recommended, but plates do tolerate gentle spray techniques.

Preparative TLC plates

Preparative TLC plates have adsorbent layers thicker than the 250 microns. Thus, preparative plates can be used for separation of larger quantities of materials. The loading capacity for a given degree of sample component resolution increases roughly as the square root of the adsorbent layer thickness. In preparative TLC, materials to be separated are often applied as long streaks rather than spots. After development, specific compounds may be recovered by scraping the adsorbent layers from the plate in the region of interest and eluting the separated material from the adsorbent using a strong solvent.