Propargyl-PEG8-acid

Introduction

Usages:

For the rapid detection and enumeration of coliform bacteria.

Principle:

Peptone and yeast extract powder provides carbon and nitrogen sources and trace elements; sodium chloride maintains osmotic equilibrium; agar as medium coagulant; dodecyl sulfate inhibit Gram-positive bacteria; chromogenic substrate and large intestine flora β- galactosidase-glucosidase specific reaction, hydrolysis of the substrate, the release of the color groups  produce green colonies on the light yellow plate.

Formulation (per liter):

Peptone :10g

Yeast extract powder: 3g

sodium chloride:5g

sodium lauryl sulfate:0.1g

Agar :12g

Chromogenic substrate 2.7g

Final pH 7.0 ± 0.2

How to use:

1. Weigh 32.8g of this product, adding 1L of distilled or deionized water , heated to boiling stirring until completely dissolved, dispensing into flask without autoclaving.

2,Take 25g or 25mL of sample with aseptic procedures, added to the flask containing 225mL of sterile phosphate buffered saline (or saline) is shaken thoroughly homogenized with a homogenizer or a 1:10 dilution 1min, then 1:10 dilution continue to select the appropriate serial dilutions of three, two plates each dilution was inoculated.

3, the use of pour method: The medium is cooled in a water bath to about 50 , sterilized petri dish having a diameter 90mm, 1ml samples were inoculated per dish, then poured into about 15ml of the above dissolution medium, and mix to solidify, upside down, 37 for 24 hours.

4, using surface inoculation: cooled to about 50 , shake devoted to the medium in sterile petri dish. Can be stored in the refrigerator for a day or stored at room temperature for several days (dark, 4 ). The sample was streaked method or filter method, 37 for 24 hours.

5, observe the results.

Quality control:

This product appear light yellow after pouring into plate, these strains were inoculated after 36 ± 1 18 ~ 24h culture growth in the following table.

Growth of bacteria were cultured bacteria numbers feature

Escherichia coli ATCC25922 good green colonies

Citrobacter ATCC8090 good green colonies

Salmonella typhimurium CMCC50115 good colorless colonies

Enterococcus faecalis ATCC29212 suppressed —–

Storage: Store at 10-30 , dark, cool and dry place, tighten the cap immediately after use. Storage period of two years.

1000mL

• ASTM Type I Water
• Produced by reverse osmosis, ion-exchange, electro-deionization, ultrafiltration, UV treatment (UVC & 185 nm), 0.1 μm membrane filtration
• Nuclease-free, protease-free, endotoxin-free
• Suitable for molecular biology applications (qPCR, NGS etc.)
• Suitable for cell culture applications
• Produced in an ISO certified GMP laboratory
• Water system is routinely monitored for compliance with QC standards

The Norgen water purification system has been designed in conjunction with experts from Millipore Sigma. The Ultrapure NFW is purified in a two-stage process. The first stage, to produce type II water, includes pre-treatment with activated charcoal and polyphosphate, this water then undergoes reverse osmosis, electro-deionization and ion exchange to remove contaminants as well as UV treatment for disinfection. The Pure water then flows to a second system in a clean room with an additional 4 layers of purification. After passing through an additional ion exchange column, the water is then subjected to Ultrafiltration to remove particulates, bacteria, & ionic contaminants down to trace level, the water is then treated with UV light (182 nm wavelength) to break down organic matter. Lastly a second Ultrafilter for the production of pyrogen-, nuclease- and bacteria-free water at 18.2 MΩ. This water is of utmost purity and suitable for direct use in molecular biology applications such as qPCR and NGS, as well as cell culture and other applications.

Product Specifications
pH	n/a (highly pure water does not contain enough ions for an exact pH determination.)
Recommended Storage	Room Temperature
Grade	Ultrapure (ASTM Type I)
Biological Activity	DNase-, RNase-, Protease-, Endotoxin- Free
TOCs	< 50 ppb
Resistivity	> 18 MΩ-cm
Treatment	Not DEPC-Treated
Quantity	100 mL, 500 mL, 1000 mL
Purification Methods	Activated charcoal, polyphosphate, reverse osmosis, electro-deionization, ion exchange, UV, ultrafiltration
Shipping Conditions	Room Temperature

Details

Applications
For use in any molecular biology application

Storage Conditions
Norgen’s Nuclease-Free Water should be stored at room temperature. Storage at +4°C or -20°C is optional.

Precautions and Disclaimers
This product is designed for research purposes only.  It is not intended for human or diagnostic use.

OverView

The PCR Decontamination Kit can remove contaminating DNA in PCR master mixes, without reduction of PCR sensitivity.

• The double-strand specific property of the dsDNase allows decontamination with primers and probe present.
• Efficient for end-point PCR, probe-based qPCR, and some SYBR based qPCR mixes.
• Contaminating bacterial DNA can be reduced to levels below the detection limit.
• Fast and easy protocol.
• Flat NTCs (No Template Controls).

Decontamination of master mixes without reduction of sensitivity has always been a challenge. Especially when minor amounts of DNA are targeted, contaminating DNA is a major problem. Any loss of sensitivity in the qPCR assay caused by the decontamination protocol is unacceptable.

In Figure 1, it is demonstrated that the PCR decontamination kit can remove contaminating DNA from a qPCR mix to non-detectable levels (flat NTC), without affecting the sensitivity of the qPCR.

Kit Contents

• DTT (Inactivation Aid)
• dsDNase

The PCR Decontamination Kit can remove contaminating DNA in PCR master mixes, without reduction of PCR sensitivity.