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TLC and HPTLC Plates with Concentrating Zone

Quick and Easy Application of Large Sample Volumes

Our concentrating zone plates are based on the different properties of two silica adsorbents: an inert, large-pore concentrating adsorbent where the samples are applied; and a selective separation layer. Independent of the shape, size or position of the spots, the sample always concentrates within seconds as a narrow band at the interface of the two adsorbents. In addition, the concentrating zone can serve as a clean-up step for analytes in complex matrices, such as oils and cosmetics. Suitable for TLC, HPTLC and PLC, the plates allow easy application of large volumes of diluted samples. The analytical TLC and HPTLC concentrating zone plates provide areas of 2.5 cm, whereas the concentrating zone of PLC plates is 4 cm in length.

Features and benefits

  • Quick and easy sample application
  • Highly facilitated sample loading
  • Better resolution due to focused bands
  • Includes purification and concentration steps

TLC Plates with Concentrating Zone

Figure 1. Stages of the development on a concentration zone pate from left to right: sample application; concentration: separation.

TLC Plates with Concentrating Zone

Product No. Description Layer Sorbent/ Coating Material Layer thickness/ µm Format/ cm Support/ Backing Pack size/ Content
1.11845.0001 TLC Silica gel 60 concentrating zone 2.5 x 20 cm Silica gel 60 250 20 x 20 glass 25 plates
1.11844.0001 TLC Silica gel 60 concentrating zone 2.5 x 10 cm Silica gel 60 250 10 x 20 glass 50 plates
1.05582.0001 TLC Silica gel 60 concentrating zone 2.5 x 20 cm Silica gel 60 200 20 x 20 aluminum 25 sheets
1.11798.0001 TLC Silica gel 60 F254*1 concentrating zone 2.5 x 20 cm Silica gel 60 F254*1 250 20 x 20 glass 25 plates
1.11846.0001 TLC Silica gel 60 F254 *1concentrating zone 2.5 x 10 cm Silica gel 60 F254 *1 250 10 x 20 glass 50 plates
1.05583.0001 TLC Silica gel 60 F254 *1 concentrating zone 2.5 x 20 cm Silica gel 60 F254 *1 200 20 x 20 aluminum 25 sheets

*1 F254 Fluorescent indicator

HPTLC Plates with Concentrating Zone

Product No. Description Layer Sorbent/ Coating Material Layer thickness/ µm Format/ cm Support/ Backing Pack size/ Content
1.13749.0001 HPTLC Silica gel 60 concentrating zone 2.5 x 20 cm Silica gel 60 concentrating zone 2.5 x 20 cm 250 20 x 10 glass 50 plates
1.13748.0001 HPTLC Silica gel 60 concentrating zone 2.5 x 10 cm Silica gel 60 concentrating zone 2.5 x 10 cm 250 10 x 10 glass 25 plates
1.13728.0001 HPTLC Silica gel 60 F254 concentrating zone 2.5 x 20 cm Silica gel 60 F254 concentrating zone 2.5 x 20 cm 250 20 x 10 glass 50 plates
1.13727.0001 HPTLC Silica gel 60 F254 concentrating zone 2.5 x 10 cm Silica gel 60 F254 concentrating zone 2.5 x 10 cm 250 10 x 10 glass 25 plates
1.13187.0001 HPTLC Silica gel 60 F254 concentrating zone 2.5 x 5 cm Silica gel 60 F254 concentrating zone 2.5 x 5 cm 250 5 x 10 glass 25 plates
1.15498.0001 HPTLC Silica gel 60 RP-18 F254s concentrating zone 2.5 x 20 cm Silica gel 60 RP-18 F254s *1 concentrating zone 2.5 x 20 cm 250 20 x 10 glass 25 plates

*1 F254 Fluorescent indicator
*2 F254s Fluorescent indicator, acid stable

PLC Pates with Concentrating Zone

Product No. Description Layer Sorbent/ Coating Material Layer Thickness/ mm Format / cm Support/ Backing Pack size/ Content
1.13794.0001 PLC Silical gel 60 F254 0.5 mm with concentration zone 4 X20 cm Silica gel 60 F254*1, 0.5 mm with concentrating zone 4 x 20 cm 0,5 20 x 20 glass 20 plates
1.13792.0001 PLC Silical gel 60 F254 1 mm with concentration zone 4 X20 cm Silica gel 60 F254*1, 1 mm with concentrating zone 4 x 20 cm 1 20 x 20 glass 15 plates
1.13793.0001 PLC Silical gel 60 F254 2 mm with concentration zone 4 X20 cm Silica gel 60 F254*1, 2 mm with concentrating zone 4 x 20 cm 2 20 x 20 glass 12 plates

*1 F254 Fluorescent indicator