Standard kits include competent cells in a bulk format. Standard kits are an economical choice and they are designed for scientists who perform more than one transformation at a time and for general use in a busy lab. Kits are available in 500 μl (5 × 100 μl), 1 ml (5 × 200 μl), and 2 ml (4 × 500 μl) quantities. These kits include SOC medium and pUC19 positive control.