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……
Detail
Introduction
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.
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Product Info
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Document
Dde Biotin-PEG4-alkyne is useful for introducing a biotin moiety to azide-containing molecules using Cu(I)-catalyzed Click Chemistry. The hydrophilic spacer arm provides better solubility to the labeled molecules in aqueous media. Dde protecting group allows efficient release of captured biotinylated molecules from streptavidin under mild conditions with hydrazine. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
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Compact and stylish designed, the BioShake XP high-speed microplate mixer lets you perform all your standard mixing runs with a minimum of adjustments. The XP offers outstanding performance to handle a wide range of applications across biotechnology, pharmaceutical and academic research.
Small. Light. Efficient. Quiet.
Ideal for microplates & PCR plates
High-precision mixing from 200 up to 3,000 rpm
Universal spring clamps for easy fixation
Wide range of adapters
Stylish, fire resistant aluminium housing
ADVANCED TECHNOLOGY
Compact & stylish designed
Mixing tasks in microplates can be realized fast & safe with using adjustable speed of 200 up to 3,000 rpm.
The BioShake mixing-technology is obviously more robust, vibration free and needs less maintenance compared to classical mixers.
The first-class finished aluminium housing gives the BioShake XP its essential functionality. It provides a high amount of security, device stability and ensures a long service life.
GENTLE MIXING OF SAMPLES
By planar orbital motion
German designed and manufactured, BioShake XP plate mixer offer an ultra-efficient, 2-dimensional shaking axis so that samples mix completely in a fraction of the time of competing systems.
The mixing orbit of 2.0 mm is always constant. The orbital shaking is precisely controlled, in fact, that you need never spin down your plates after mixing. Even tubes, vials, high density plates, or low sample volumes, offer no obstacle for these precision tools.
Fully adjustable between 200 rpm and 3,000 rpm, well beyond the speeds of most other brands, guarantees fast, splatter-free, mixing for tubes, glass vials or across an entire 384-well microplate.
COMFORT
Simple intuitive operation and programming
The BioShake XP is operated from the front face of the enclosure which includes touch buttons and a display.
Special buttons for start, stop and storage of time and mixing modes enable the instrument to run complex applications. This opens new points of view on the daily laboratory work and optimizes routine application enormously.
The short mix button allows short and fast mixing in between.
The two line LCD display guarantees simultaneous and safe reading of all programmed and measured parameters as time and mixing frequency.
UNIVERSAL SPRING CLAMPS
Suitable for all microplates
In the corners eight spring clamps are inserted for easy fixation of skirted microplates anddeep well plates in SBS format 127.7 x 85.5 mm without an attached adapter. These spring clamps lock the microplate quickly and safely, even at the highest mixing frequencies.
For flexible and deformable PCR plates we recommend using of the related PCR adapter.
Fast mixing processes with frequent plate changes can be performed in the routine as easy and safe.
UNIQUE DESIGN MEETS HIGH-END TECHNOLOGY
First-class finished aluminium housing
Unique and efficient design combined with the most compact housing result in beautiful and well-defined laboratory equipment. Therefore, the first-class finished aluminium housing gives the BioShake XP its essential functionality. It provides a high amount of security, device stability and ensures a long service life.
Safety of the user and ease of use are clearly a priority for us.
EXCHANGABLE ADAPTERS
For a wide range of applications
The BioShake XP comes with a variety of standardized and specific adapter plates. The replacement of the adapters are very simple.
Perfect shaped adapters allow an optimal fit for standard tubes, lysis tubes, microplates, glass vials and other sample vessels.
MADE IN GERMANY
High-end instruments for daily routine
A perfectly harmonious blend of high-tech and handmade. “Made in Germany” has always been a recipe for success for QInstruments. 100% of QInstruments production takes place in Germany.
The focus is on human diligence and on being environmentally friendly. The company upholds its quality guarantee by means of consistent quality management. For more than 15 years these lab automation professionals from Jena have used only high-quality materials to ensure sustainable production, applied innovative thinking and undertaken research in a future-oriented way – all as a matter of course.
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Ideal for microplates & PCR plates High-precision mixing from 200 up to 3,000 rpm Universal spring clamps for easy fixation Wide range of adapters Stylish, fire resistant aluminium housing
