Alkyne-PEG2-iodide is a crosslinker containing a propargyl group and an iodine group. The propargyl group can form triazole linkage with azide-bearing compounds or biomolecules via copper catalyzed Click Chemistry reactions. Iodine (I) is a very good leaving group for nucleophilic substitution reactions. The hydrophilic PEG spacer increases solubility in aqueous media. Reagent grade, for research use only.
Alkyne-PEG2-iodide is a crosslinker containing a propargyl group and an iodine group. The propargyl group can form triazole linkage with azide-bearing compounds or biomolecules via copper catalyzed Click Chemistry reactions. Iodine (I) is a very good leaving group for nucleophilic substitution reactions. The hydrophilic PEG spacer increases solubility in aqueous media. Reagent grade, for research use only.
Permagen’s 50 mL Centrifuge Tube Magnetic rack is designed for magnetic bead separations from up to six, 50 mL Centrifuge tubes
Accommodates any common 50 mL Centrifuge Tubes
Beads will be pulled to back wall allowing easy aspiration and tip tracking down the front wall of the tubes without disturbing bead pellet
Features include solid aluminum alloy design with hard coat finish for years of trouble-free use, rubber feet to help prevent slipping on work bench, less tippy than common plastic products, and fast separations using any magnetic beads
MSR6X50
Maximum Volume – 50 mL
Minimum Volume – 10 mL
Permagen’s 50 mL Centrifuge Tube Magnetic rack is designed for magnetic bead separations from up to six, 50 mL Centrifuge tubes
Usages：
Determination of coliform and fecal coliform for multiple tube fermentation.
Principle:
Tryptone provide carbon and nitrogen sources to meet the needs of bacterial growth; sodium chloride osmotic pressure balance can be maintained; Lactose is a coliform fermentable sugars; potassium dihydrogen phosphate and dipotassium phosphate is a buffer; lauryl sodium can inhibit the growth of non-coliform bacteria.
Formulation (per liter):
Trypticase:20g
Sodium chloride: 5g
Lactose:5g
Potassium dihydrogen phosphate: 2.75g
Dipotassium hydrogen phosphate :2.75g
Sodium lauryl sulfate 0.1g
Final pH6.8 ± 0.2
How to use:
1. Suspend 35.6g of the product, adding 1 L of distilled or deionized water, heated to boiling stirring until completely dissolved, packed in a test tube with a small down tube, 121 ℃ autoclave 15min, leave to cool to room temperature, standby .
2.Sample handling and dilution.
3.Selected three consecutive dilution, each dilution was inoculated three LST broth tubes, each tube was inoculated 1mL.
4. Put the tubes in an incubator 36 ± 1 ℃ cultured for 48 ± 2h.
5. Observe the results. if all LST broth don’t pruduse gas, can be reported as negative for E. coli, if gas production then will have to make further confirmed by experiments.
Quality control:
Quality control strains were inoculated and culuture at 36 ± 1 ℃ for 24h ,results are as follows:
Bacterial Name Bacterial No. Growth Status Gassing
Escherichia coli ATCC25922 good +
Salmonella typhimurium CMCC (B) 50115 good —
Staphylococcus aureus ATCC6538 inhibited —
Storage: Store in a dark, cool and dry place, tighten the cap immediately after use. Storage period of three years.
Specifications: 250g/bottle
250g
HiPure Bacterial RNA Kit uses silica gel column purification to simplify the extraction. The whole process does not require phenol chloroform extraction and time-consuming alcohol precipitation. The kit is suitable for efficiently extracting RNA from various bacterial samples. The purified RNA can be directly used for RT-PCR, Northern hybridization, etc. The kit has included lysozyme and glass beads, which can be used to treat gram-negative bacteria which is easy to be lysed, as well as gram-positive bacteria which is hard to be lysed, including enterococcus faecalis, staphylococcus, etc.
Specifications
| Features | Specifications |
| Main Functions | Isolation total RNA from bacteria culture |
| Applications | RT-PCR, Northern blot, poly-A + purification, nucleic acid protection and in vitro translation |
| Purification method | Mini spin column |
| Purification technology | Silica technology |
| Process method | Manual (centrifugation or vacuum) |
| Sample type | Bacteria culture |
| Sample amount | Bacteria: <10^9 |
| Elution volume | ≥30μl |
| Time per run | ≤40 minutes |
| Liquid carrying volume per column | 800µl |
| Binding yield of column | 100µg |
Hipure silica gel column is based on glass fiber filter membrane with high binding force. Under the condition of high concentration of ionizing agent (such as guanidine hydrochloride or guanidine isothiocyanate), the filter membrane can adsorb nucleic acid through hydrogen bond and electrostatic, while protein and other impurities are not adsorbed and removed. The filter membrane adsorbed with nucleic acid is washed to remove the residual protein and salt. Finally, the nucleic acid adsorbed on the filter membrane can be washed out with low salt buffer (such as buffer TE) or water. The obtained nucleic acid has high purity and can be directly used in various downstream experiments.
Advantages
Kit Contents
| Contents | R418101 | R418102 | R418103 |
| Purification Times | 10 Preps | 50 Preps | 250 Preps |
| gDNA Filter Mini Columns | 10 | 50 | 250 |
| HiPure RNA Mini Columns | 10 | 50 | 250 |
| 2ml Collection Tubes | 20 | 100 | 500 |
| Glass Beads (0.1-0.6mm) | 10 g | 30 g | 150 g |
| Plastic spoon | 2 | 4 | 10 |
| Lysozyme | 20 mg | 90 mg | 400 mg |
| Protease Dissolve Buffer | 1.8 ml | 1.8 ml | 10 ml |
| Buffer TE | 1.8 ml | 1.8 ml | 5 ml |
| Buffer STL | 5 ml | 20 ml | 90 ml |
| Buffer RLC | 10 ml | 30 ml | 150 ml |
| Buffer RW1 | 10 ml | 50 ml | 250 ml |
| Buffer RW2* | 5 ml | 20 ml | 2 x 50 ml |
| RNase Free Water | 1.8 ml | 10 ml | 30 ml |
Storage and Stability
The kit components can be stored at room temperature (15–25°C) and are stable for at least 18 months under these conditions. Due to the lack of antibacterial agents, RNase Free Water may be contaminated by bacterial or fungal when placed or operated at room temperature. It is recommended to pack and store at 2-8°C to reduce contamination.
HiPure Bacterial RNA Kit uses silica gel column purification to simplify the extraction. The whole process does not require phenol chloroform extraction and time-consuming alcohol precipitation. The kit is suitable for efficiently extracting RNA from various bacterial samples. The purified RNA can be directly used for RT-PCR, Northern hybridization, etc. The kit has included lysozyme and glass beads, which can be used to treat gram-negative bacteria which is easy to be lysed, as well as gram-positive bacteria which is hard to be lysed, including enterococcus faecalis, staphylococcus, etc.
