Propargyl-PEG5-Ms

0.2 mL PCR Tube Stand ANSI/SBS

SKU: X9602 (for X96)

The Permagen 0.2 mL PCR Tube Stand was designed to fit our X96 or X396 Magnet plate, however, it may also be used as a stand-alone plate for use in manual and automation applications for 0.2 mL PCR strips & tubes

The Permagen 0.2 mL PCR Tube Stand was designed to fit our X96 or X396 Magnet plate, however, it may also be used as a stand-alone plate for use in manual and automation applications for 0.2 mL PCR strips & tubes

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.

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……