GoldBand 3-color Low Range Protein Marker (2.7-40 kDa)



This product consists of 9 highly purified and prestained proteins ranging in molecular weight from 2.7 kDa to 40kDa (2.7,4.2,6.5,10,15,20,25,30,40 kDa), among them, 40 kDa is orange band, 10 kDa is green band. The labeled apparent molecular weight was calibrated by the molecular weight Marker of standard non-prestained proteins. Using this product, the state of protein electrophoresis and the effect of membrane transfer can be dynamically observed. After SDS-PAGE electrophoresis, the color bands were transferred to PVDF membrane and NC membrane. This product is conveniently packaged and is a ready-to-use product, do not heat, dilute or add reducing agents! After the prestained protein is combined with the dye, in different buffer systems, there is displacement. this product is only for reference when judging the molecular weight of the target protein.


  • Bright color - three color predye, each strip average concentration of 2.5 μg
  • Lower amount of this product into the gel hole - mini-gel: 3-5 μL; Western blotting: 1.5-2.5 μL
  • Stable performance - 50℃ for 20 h, no degradation
  • Long shelf life - can be stored at -15℃ ~ -25℃ for two years


  • Protein migration is monitored during SDS-PAGE electrophoresis
  • Monitor protein transfer to the membrane after Western blotting
  • Protein size analysis on SDS-PAGE and Western blotting


Product Type Specs Protein Ladder
Size Range 2.7 kDa to 40 kDa
Number of Markers 9
Molecular Weight 2.7,4.2,6.5,10,15,20,25,30,40 kDa
Stain Type 40 kDa is orange band, 10 kDa is green band, the rest are blue bands
Storage Buffer 62.5 mM Tris-H3PO4(pH 7.5), 2 mM EDTA, 2% (W/V) SDS, 33% (W/V) Glycerol, 5 mM DTT, 0.02% (V/V) proclin300
Ready to Load ready-to-use product, do not heat, dilute or add reducing agents


Components No. Name 20344ES72 20344ES76 20344ES90
20344 GoldBand™ 3-color Low Range Protein Marker (2.7-40 kDa) 250 μL 2×250 μL 10×250 μL

Shipping and Storage

The product is shipped with dry ice and can be stored at -15℃ ~ -25℃ for two years. For regular use, it can be placed at 4℃, valid for three months. It is recommended to store in aliquots to avoid repeated freezing and thawing!


Figure 1 18% SDS-PAGE electrophoresis results

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