J. Liquid Chromatogr. 14, 1511-1517 (1991). Comparison of separations using conventional TLC plates and Empore sheets in reproducibility, retention time, and solvent systems, using dyes and aflatoxins as model samples.

Reproducibility of silica gel 60 precoated plates in TLC and HPTLC. GIT Fachz. Lab. 38, 973-977 (1994). Study of batch-to-batch reproducibility regarding retention behaviour, selectivity, and separation efficiency. The very small standard deviation of the mean values of the chromatographic data shows the robustness of the TLC method.

Chinese J. Chromatogr. (Sepu) 13, 383-386 (1995). The results showed that the chromatographic performance reached the optimum when the plates coated with a slurry which was prepared with a CMC solution of ca. 1.0% (w/v) in water. These plates have an appropriate rigidity. The finding provides a base for home-coating TLC plates in higher quality.

Acta Chromatographica 8, 32-38 (1998). Description of the synthesis and characterization of two dicationic zeolites of the type metal cation - organic cation which have been used as stationary phases in TLC. The new stationary phases were tested by TLC of a test dye mixture. TLC of methylene blue, crystal violet, rhodamine 6G, rhodamine B, and fuchsin (basic) with benzene - chloroform - methanol 6:4:1 and benzene - chloroform - methanol - acetic acid 4:3:3:1.

Chem. Environ. Res. 9 (3&4), 329-332 (2000). TLC of a dye test mixture (methyl red, methyl orange, methyl green) on "Sorbfil" layers with 2-propanol. As preliminary zone a writing, a chromatographic or a filter paper was attached to the layer. Increased efficiency due to concentrating effects on connection site. Rapid and simple method for large sample volumes or for concentrating in a flow.

Part I. Acta Chrom. 17, 302-313 (2006). Non-polar (RP-2, RP-8, and RP-18) and polar (amino, cyano, and diol) chemically bonded stationary phases have been impregnated with solutions of organic substances at different concentrations and the effect of impregnation on the mechanism of retention of alcohols, higher fatty acids, amino acids, and medicines has been investigated.

Chinese J. Pharm. Anal. 8, 196-200 (1988) (Yaowu Fenxi Zazhi). Application of six Chinese traditional patent formulations without pretreatment, on silica by TAS technique. Development with various solvent systems. Detection by spraying with various reagents.

J. Planar Chromatogr. 18, 132-140 (2005). Detailed description of a semi-automatic sample applicator. All components are commercially available at low cost; the process of assembly is very simple, especially the spraying head and the applicator mechanism. The type and the position of the spraying head, the gas pressure, and the application speed were tested. The relative standard deviation of band length and band width are < 1 % and < 2.5 %, respectively. The application speed is an important factor: the faster the application speed, the better.