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12% SDS-Page High-Resolution Color (red) Gel Ultra-Fast Preparation Kit

  • G2068-50T

Product Description

product description

This kit provides a simple and fast 12% SDS-PAGE high-resolution color (red) gel preparation method. This method does not add TEMED, only need AP (ammonium persulfate) to form gel, which greatly reduces TEMED is harmful to the human body and the environment. The gel can be electrophoresed at a constant voltage of 200 V, which can be completed in 30 minutes. Compared with the traditional gel electrophoresis system, this method takes less time and with higher resolution. Users only need to prepare gel-making equipment and pure water, and the concentrated electrophoresis buffer can be diluted to 1 x before gel electrophoresis. This product is a modified Bis-Tris formula gel, 25 x running buffer is MOPS running buffer, Tris-Glycine running buffer cannot be used. The specific number of gel blocks is related to the thickness and the size of the gel.

Storage and transportation 
Ice bag (wet ice) transportation;
Stored at 4°C and away from light, the BTT electrophoresis buffer (25×) can be stored at room temperature and and valid for 12 months.


Component G2068-50T
BTT upper gel solution A 50mL
BTT upper gel solution B (red) 50mL
12% BTT lower gel solution A 125mL
12% BTT lower gel solution B 125mL
AP (Ammonium Persulfate) 1g (powder)
BTT buffer(25 x ) 2×250mL
User manual 1 pc


  1. According to the molecular weight of the target protein, select the appropriate concentration of SDS-PAGE lower gel (separation gel), please refer to the following table:

AcrylamideConcentration Best separation range (kDa)
8% ≥35 kDa
10% 10-250 kDa
12% 10-100 kDa


  1. Prepare 10% AP solution: Get 0.1 g of AP (ammonium persulfate) powder and dissolve it completely with 1 mL of water. The solution is valid for 1-2 weeks when stored at 4°C, and valid for 3 months when stored at -20°C.


  1. According to the experimental requirements, mix solution A and B in equal proportions, add an appropriate amount of 10% AP solution, and prepare the lower gel solution and the upper layer gel solution respectively. For glass plates of different specifications and different thicknesses, the preparation volume of the upper layer gel and the lower layer gel solution can be adjusted in equal proportions. Taking the commonly used 8.3 cm×7.3 cm gel plate as an example, the recommended preparation system is as follows:

Group Component Single piece of gel (1.0 mm thickness) Two pieces of gel (1.0 mm thickness)

Lower gel solution
12% BTT lower gel solution A 2.5mL 5mL
12% BTT lower gel solution B  2.5mL 5mL
10% AP solution 100μL 200μL

Upper gel solution
BTT upper gel solution A 1mL 2mL
BTT upper gel solution B (red) 1mL 2mL
10% AP solution 40μL 80μL

4.Prepare the gel tool and pour the prepared lower layer gel solution, and immediately add the prepared upper layer gel solution slowly and evenly (distilled water can also be used to seal the lower layer glue liquid surface, 15-30 minutes later until the lower layer gel is fully solidified, then add the prepared upper layer gel solution), insert the comb, and wait for it to solidify (about 15-30 min) before usage.
5.If the prepared gel cannot be used on the same day, it can be stored at 4°C for 1-2 days before usage.
6. Dilute 25 x running buffer to 1 x running buffer before electrophoresis (the running buffer is not recommended to be reused more than 2 times).
7. The whole process of electrophoresis can be 200 V constant voltage electrophoresis, and electrophoresis can be completed in 30 minutes.

1. There is monomer acrylamid in the premix, which is harmful to the human body. Please take protective measures during operation.
2. In order to ensure that the sample enters the separation glue at the same time, when directly pouring the top glue, the prepared top gel solution should be added slowly and evenly.
3. Pour the gel as soon as possible after adding AP, do not leave it for a long time.
4. If you need to further accelerate the gel speed, you can increase the AP usage by 0.5 times.
5. The solidification of the gel has a significant positive correlation with the temperature. Under the same conditions, the higher the temperature, the faster the solidification rate.
6. The company also provides other color (green, yellow, blue) of upper gel solution to distinguish different samples and different gel electrophoresis.
7. The gel made by this kit is not compatible with the Tris-Glycine electrophoresis buffer system, and can only be used with the BTT electrophoresis buffer in the kit. A single product of BTT electrophoresis buffer (25×) is also provided, please refer to G2050.


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