

The kits were developed for plasmid miniprep directly from bacterial cultures. 100% centrifuge-free; NO vacuum needed; No column needed.
Plasmid MiniPrep Kit (Magnetic Beads), Cat.# 50012
– Use 2 ml of bacteria culture directly
Plasmid MiniPrep High Throughput Kit (Magnetic Beads), Cat.# 50011
– High throughput: Use 0.2 ml of bacteria culture directly with 96-well plates
– Low throughput: Use 0.2 ml of bacteria culture directly with 1.5 ml tubes
The kits can be used for both high copy and low copy numbers of plasmid DNA. With BioDynami’s proprietary magnetic beads technology, the kits eliminate the requirement of centrifuge, vacuum, and column. Our magnetic beads provide a robust and reliable tool for both high throughput and low throughput applications of plasmid DNA isolation with high binding capacity and fast magnetic response time.
The High Through kit (Cat.# 50011) can be used for both high throughput and low throughput extraction of plasmid DNA. Up to 96 samples can be extracted simultaneously when using a 96-well plate.
Yield of plasmid DNA may vary dependent on the bacteria strain, plasmid type, copy numbers, and growth conditions etc. DNA extracted using the kit is suitable for downstream applications such as qPCR, PCR, DNA sequencing, molecular cloning, restriction enzymatic digestion, transfection, and transformation etc. The isolated plasmid DNA with the magnetic beads is free of contaminations such as RNA, bacterial DNA, proteins, and other impurities.
Plasmid DNA were loaded on 1% of agarose gel after extraction.
Comparison of workflows of Magnetic Beads based kits
Features
Techinical parameter
| Item No | SF7009 | SF9009 | SF7012 | SF9012 |
| Ice condenser capacity | 9kg | 12kg | ||
| Ice condenser temperature | -70 C° | 90℃ | -70 C° | -90℃ |
| Cold trap volume | 15L | 20L | ||
| Freeze dried chamber | High permeability organic glass/multi manifold external valve/stainless steel chamber | |||
| Sample shelf | ●φ260mm/485mm.Single layer area 0.055m²/0.185m².3-10 layers/optional ● Electric heating/manual capping/optional | |||
| Vacuum pump | Extreme vacuum 5*10*mbar with a pumping capacity of 8m³/h optional pump of various types | |||
| Oil mist filter | Standard configuration | |||
| Vacuum pump connection pipe | Single forming stainless steel flexible pipe DN16 ISO-KF L-1.2m | |||
| Anti-corrosive treatment | Cold trap,condensing coil/all equipped with PTFE anti-corrosion treatment as standard. Freeze-drying organic solvents | |||
| External valve | 1-48 ports/optiona | |||
| Eutectic point judgment | Support/Optional | |||
| Data export analysis | Support/Optional | |||
| Power | 0.9kw | 1.5kw | 1kw | 1.6KW |
| Size | 525*570*1080mm | |||
Model:
SF7009,SF9009,SF7012,SF9012
Brand:
Yingtai
Intended Use
For the selective separation and enumeration of enterococci in food and water.
Principle and Interpretation
Tryptone and peptone are the sources of nitrogen and essential growth factors. Yeast extract acts as well nitrogenous compounds and additionally the vitamin B12 complex. Sodium azide acts largely inhibits the growth of gram-negative bacteria while sparing enterococci, staphylococci and streptococci. Ox bile inhibits most gram positives but not enterococci. Enterococci hydrolyse esculin to esculetin and dextrose, which reacts with ferric citrate producing a brownish black precipitate around the colonies. Tolerance to bile and the ability to hydrolyze esculin is the traditional and reliable test for the identification of enterococci. (4). Sodium chloride maintains the osmotic balance of the medium and Agar is the solidifying agent.
Formulation
| Ingredients | /liter |
| Tryptone | 17.0g |
| Ox bile | 10.0g |
| Yeast extract | 5.0g |
| Sodium chloride | 5.0g |
| Peptone | 3.0g |
| aesculin | 1.0g |
| Ferric ammonium citrate | 0.5g |
| Sodium azide | 0.15g |
| Agar | 15.0g |
| pH 7.1±0.1 at 25°C | |
Preparation
Weigh 56.6g of dry powder of this product, add 1 L of distilled water or deionized water, stir, heat and boil until completely dissolved, and sterilize at 121℃ for 15 min.
Quality Control
Cultural characteristics observed after incubation at 35-37°C for 20-24hours.
| Quality control strains | Growth | Colony color |
| Enterococcus faecalis ATCC29212 | PR≥0.7 | Brown-black halo |
| Escherichia coli ATCC25922 | inhibited | Absence of brown-black halo |
Sorage and Shelf Life
Keep container tightly closed, store in a cool, dry place, away from bright light. Storage period of 3 years.
Precautions
1. When weighing the dehydrated medium, please wear masks to avoid causing respiratory system discomfort
2. Keep container tightly closed after using to prevent clumping.
Waste Disposal
Microbiological contamination was disposed by autoclaving at 121°C for 30 minutes.
Intended Use For the selective separation and enumeration of enterococci in food and water. Principle and Interpretation Tryptone and peptone are the sources of nitrogen and essential grow……