1 dna gel preparation – Bio-Rad Sub-Cell® Model 192 Cell User Manual

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background image

Contruction

Base

Cast Acrylic

Gel Casting Gates

Anodized Aluminum

Safety Cover

Cast Acrylic

Banana Plug/Electrode Cassette

Polycarbonate

Banana Plugs

Gold-Plated Brass, 4.4 cm Length

Electrodes

Platinum, 0.25 mm Diameter

Electrical Cables

Dual, 20 AWG, Tinned Copper Wire Cable
Flame-Retardant Polyurethane Insulation jacket

Electrical Leads

Nickel Silver

Gel Tray

UV-Transparent Acrylic Plastic (UVTP)

Combs

Machined Acrylic

Comb Holder

Polycarbonate

Gel Casting Device

Polycarbonate
0.64 cm Silicon Foam

* Base buffer volumes will vary depending on the size and thickness of gel used.

Section 2
Operating Instructions

Note: Refer to Section 3 for information on preparation of RNA gels. See References
1 and 2 for more information on DNA and RNA electrophoresis.

2.1 DNA Gel Preparation

DNA agarose gels can be used to separate and visualize DNA of various sizes. Before

casting an agarose gel, consult Table 2.1 to determine the appropriate percent agarose gel to
use based on the size of DNA to be separated.

Procedure

1. Determine the amount of agarose (grams) and volume needed. Use Tables 2.1 and 2.2

as a guide for agarose concentration and gel volume requirements.

Example: For a 1% agarose gel, add 1 gram of agarose to 100 ml of electrophoresis buffer.

Table 2.1 Gel Concentration Required for DNA Separation

1-2

Gel Concentration %

DNA Size (Kbp)

0.50

1 – 30

0.75

0.8 – 12

1.00

0.5 – 10

1.25

0.4 – 7

1.50

0.2 – 3

2-5*

0.01 – 0.5

* Sieving agarose such as Bio-Rad AmpliSize

®

agarose.

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