Usages: For isolating lactose-fermenting Gram-negative enteric bacilli.
Principle: Peptones are sources of nitrogen and other nutrients. Lactose is a fermentable carbohydrate. When lactose is fermented, alocal pH drop around the colony causes a color change in the pH indicator (neutral red) and bile precipitation. Bile salts,bile salts no. 3, oxgall and crystal violet are selective agents that inhibit growth of gram-positive organisms. Agar is the solidifying agent.
Formulation（per liter）:
Pancreatic Digest of Gelatin
17.0 g
Peptones (meat and casein)
3.0 g
Lactose Monohydrate
10.0 g
Sodium Chloride
5.0 g
Bile Salts
1.5 g
Agar
13.5 g
Neutral Red
30.0 mg
Crystal Violet
1 mg
Final pH
7.1±0.2
How to use： 1.Suspend 50 g in 1 L of distilled or deionized water. Heat to boiling to dissolve completely. Autoclave at 121°C for 15 minutes.
2.Transfer 1 mL of Soybean–Casein Digest Broth to 100 mL of MacConkey Broth, and incubate at 42 to 44 for 24 to 48 hours. Subculture on a plate of MacConkey Agar at 30 to 35 deg.C for 18 to 72 hours.
Quality control：
Item
The name and number of strain
PR/G
Reaction
Growth rate
E.Coli ATCC8739
PR≥0.7
Rose-red
Characteristic difference
Proteus mirabilis CMCC(b)49005
PR≥0.7
Colorless, no swarming
Selective
Staphylococcus aureus ATCC6538
G≤1
－
Storage: Keep container tightly closed, store in a cool, dry place, away from bright light. Storage period of three years.
Specifications: 250g/bottle
Other Products
Total RNA Purification Kits
Product Info
Document
Product Info
Overview
Extract high quality & quantity total RNA including miRNA
No phenol step required; isolate all RNA in one fraction
Bind & elute all RNA irrespective of size or GC content, without bias
Very sensitive & linear down to a few cells without the need for carrier RNA
Isolate from a wide variety of specimens
Purified RNA is suitable for a variety of downstream applications, including Small RNA Sequencing. Find out more information on Norgen’s NGS services
Available in a variety of formats to suit your needs
Purification is based on spin column chromatography that uses Norgen’s resin separation matrix
These kits are suitable for the isolation of total RNA from a range of samples including cells, bacteria, yeast, virus and bodily fluids including plasma/serum, blood, saliva, CSF and more. Extract high quality and purity RNA with excellent RIN values and A260/A280 suitable for downstream applications including qRT-PCR, RT-PCR, microarrays, NGS and more. These kits purify all sizes of RNA from large mRNA, lncRNA down to microRNA (miRNA) in the same fraction without the requirement of phenol. Isolate all RNA sequences at an equal rate irrespective of size. Moreover, when the RNA sequences are small (e.g. miRNA), the column binds small RNAs regardless of their GC content.
Total RNA Purification 96-Well Kit (High Throughput and High Throughput Deep Well)
This 96-well kit provides a rapid method for the high-throughput isolation and purification of total RNA in 30 minutes using vacuum manifold, plate centrifuge, or liquid handlers with vacuum capabilities. Total RNA can be isolated from a broad range of sample sources including cultured cells, tissues, blood, serum, plasma, bacteria, yeast, fungi, and viruses.
* for isolating total RNA from larger amounts of tissue, please use Norgen’s Animal Tissue RNA Purification Kit (Cat# 25700)
Storage Conditions and Product Stability All solutions should be kept tightly sealed and stored at room temperature. These kits are stable for 2 years after the date of shipment.
PEG13-bis(Amino-Tri-(Propargyl-PEG2-ethoxymethyl)-methane) is large molecule with two sets of three terminal alkynes joined together by a large PEG linker. The alkynes are most frequently used in copper click chemistry with azides. The PEG linkers as well as numerous amide bonds provide high aqueous solubility to this compound, which may alter ADME of this compound.
Document
PEG13-bis(Amino-Tri-(Propargyl-PEG2-ethoxymethyl)-methane) is large molecule with two sets of three terminal alkynes joined together by a large PEG linker. The alkynes are most frequently used in copper click chemistry with azides. The PEG linkers as well as numerous amide bonds provide high aqueous solubility to this compound, which may alter ADME of this compound.
HiDi® stands for High Discrimination of mismatches at the 3’-terminus of primers in PCR. This myPOLS Biotec enzyme family is optimized for this feature and therefor, is the first choice for applications that rely on this property such as allele-specific PCR (asPCR) that is also termed allele-specific amplification (ASA).HiDi® 2x PCR Master Mix – ready to use mix simplifies your PCR setup. Only target-specific primers and template need to be added as the mix contains all components for a successful and reliable PCR. This ensures reproducible results, significantly reduces set-up times and the risk of pipetting errors.This PCR mix is also available with a full-length Taq DNA polymerase with a nuclease domain, featuring 100% compatibility with hydrolysis probes (TaqMan® probes etc.).Benchmarking with products of competitors conducted by us and others show that the HiDi® DNA polymerase family is the first choice for highly selective PCRs, such as genotyping by allele-specific PCR, HLA genotyping, analysis of single CpG methylation sites or the detection of mutations in a high background of wild-type sequences. By using HiDi® DNA polymerase, less than 10 copies of a mutation can be detected in a background of >10.000 wild-type copies straight away without any other tedious assay optimization.It has also been shown that HiDi® DNA polymerase family is highly suitable for quality control in CRISPR-Cas or TALEN-based applications.Several independently conducted studies show that HiDi® DNA polymerase is ideally suited for use in asPCR in numerous research areas ranging from mutation detection to genome editing. (read more)For research use and further manufacturing.In case you are aiming to use our RUO products as components or for your development of e.g. an IVD medical device, please contact us.
Casestudies: HiDi® DNA Polymerase: Applications from mutation detection to genome editing (read more)
Example Primer Design
Matching vs. mismatching nucleotide is placed at the 3′-end of the primer for best discrimination results.
Example Results – There´s no accounting for taste
Cilantro: some people love it in their food, some hate it. Here we are detecting a genomic SNP (rs72921001) in HeLa genomic DNA. This SNP is reported to be close to a number of genes coding for olfactory receptors. (Reference: Eriksson N. et al. (2012), “A genetic variant near olfactory receptor genes influences cilantro preference.”)
Considering, that only the C-allele specific primer is extended and yielding in a specific amplicon, we can conclude a genetic predisposition in disliking cilantro, as this SNP is significantly associated with detecting a soapy taste to cilantro.
Allele-specific PCRs were performed from 1 ng/µl of HeLa gDNA in the presence of a realtime dye, indicating the amplification of the C-allele specific primer only. The A-allele specific primer is discriminated, thus not amplified up to 50 cycles.
PCR products were subsequently analysed on a 2.5% agarose gel. Specific product is visualized by ethidium bromide staining at the amplicon length of 109 bp.
Document
HiDi® stands for High Discrimination of mismatches at the 3’-terminus of primers in PCR. This myPOLS Biotec enzyme family is optimized for this feature and therefor, is the first choice for applications that rely on this property such as allele-specific PCR (asPCR) that is also termed allele-specific amplification (ASA).
HiDi® 2x PCR Master Mix – ready to use mix simplifies your PCR setup. Only target-specific primers and template need to be added as the mix contains all components for a successful and reliable PCR. This ensures reproducible results, significantly reduces set-up times and the risk of pipetting errors.
