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022143P1 Macconkey Agar

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250g

Detail

Introduction

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 Gelatin17.0 g
Peptones (meat and casein)3.0 g
Lactose Monohydrate10.0 g
Sodium Chloride5.0 g
Bile Salts1.5 g
Agar13.5 g
Neutral Red30.0 mg
Crystal Violet1 mg
Final pH7.1±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:
            

ItemThe name and number of strainPR/GReaction
Growth rateE.Coli ATCC8739PR≥0.7Rose-red
Characteristic differenceProteus mirabilis CMCC(b)49005PR≥0.7Colorless,
no swarming
SelectiveStaphylococcus aureus ATCC6538G≤1

Storage: Keep container tightly closed, store in a cool, dry place, away from bright light. Storage period of three years.

Specifications: 250g/bottle

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12x5ml Angle Rotor 

R4152 HiPure Plant RNA Midi Kit

Introduction

The HiPure Plant RNA Midi Kit provides fast purification of high-quality RNA from plants, cell, tissues, and yeast using silica-membrane spin columns with a binding capacity of 1mg RNA. There is no need for phenol / chloroform extractions and time-consuming steps such as CsCl gradient ultracentrifugation or precipitation with isopropanol or LiCl. RNA purified using the RaPure Total RNA Purification System can be used for applications such as RT-PCR, Northern blotting, poly A+ RNA (mRNA) purification, nuclease protection, and in vitro translation.

Details

Specifications

FeaturesSpecifications
Main FunctionsIsolation total RNA from <1g simple plant sample without chloroform
ApplicationsRT-PCR, qPCR, Northern hybridization, second generation sequencing, nucleic acid protection, in vitro translation
Purification methodMidi spin column
Purification technologySilica technology, DNA filtration technology
Process methodManual (centrifugation or vacuum)
Sample typePlant leaves, roots, stems, fruits, fungi, etc.
Sample amount0.5-1 g
Elution volume≥400μl
Time per run≤40 minutes
Liquid carrying volume per column4ml
Binding yield of column1mg


Principle

The Kit isolates total RNA from up to 1g plant tissue. A short workflow enables RNA isolation with genomic DNA removal in less than 40 min. Samples are first lysed and homogenized. The lysate is passed through a DNA Mini column, ethanol is added to the flow-through, and the sample is applied to a RNA column. RNA binds to the membrane and contaminants are washed away. High-quality RNA is eluted in as little as 400µl water using the Kit.

Advantages

  • Efficient removal of DNA – unique genomic DNA removal column without DNase treatment
  • High quality – high purity total RNA can be directly used in various sensitive downstream applications
  • Fast – medium isolation of several samples can be completed in 40 minutes
  • Safe – no phenol chloroform extraction required
  • Sensitive – RNA can be recovered at the level of PG
  • Broad spectrum – various types of plant samples can be processed by diversity of operating procedures

Kit Contents

ContentsR415202D415203
Purification Times20 Preps100 Preps
HiPure DNA Midi Column II20100
HiPure RNA Midi Columns II20100
15ml Collection Tubes40200
Buffer RLC120 ml550 ml
Buffer PRC1120 ml550 ml
Buffer RW170 ml400 ml
Buffer RW2*20 ml100 ml
RNase Free Water30 ml120 ml

Storage and Stability

The Kit can be stored dry at room temperature (15-25°C) and are stable for at least 18 months under these conditions. Make sure that all buffers are at room temperature when used. During shipment, crystals or precipitation may form in the Buffer RLC/PRC1. Dissolve by warming buffer to 37°C.

Purchase Guide

1. When dealing with woody or uncommon samples, R4150 is recommended first. R4150 contains two polysaccharide/polyphenol lysis buffer, which is the most universal product.

2. R4151 is recommended for handling common economic crop samples for the first time. Strong lysis solution can be used to process easy-extraction samples. The amount of corn or rice leaves samples can reach up to 300mg.

3. R4165 adopts CTAB/chloroform method, which can also handle a large number of difficult-to-extraction plants, but requires contact with chloroform substitutes, which is less safe than other kits. This kit uses DNase Ⅰ to remove DNA, which is also a good choice for extracting polysaccharide/polyphenol-rich plant samples.

4. R4014 is recommended for fruit/starch plant samples, which uses improved trizol pre-treatment, single column operation and is more economical.

Select the right purification kit to get impactful results

Ⅰ. Purchase guide of Magen kits based on sample

Ⅱ. Cross purchase guide for Magen kits vs Other brands

For any customized product or OEM service, please contact us.

N-Boc-N-bis(PEG4-Propargyl)

N-Boc-N-bis(PEG4-Propargyl) is a bifunctional PEG compound containing two terminal alkynes that are combined together at a Boc-protected secondary amine. Terminal alkynes are most commonly used in copper click chemistry with azides to form stable triazoles with the target molecule. The secondary amine may be deprotected under acidic conditions to allow for alkylation at that position, increasing the molecule’s structural complexity. The use of a central amine also allows for hydrogen bonding, further increasing this compound’s water solubility.