Introduction

Intended Use

For the isolation and differentiation of sorbitol-negative Escherichia coli serotype O157 from food and animal feed and other materials

Principle and Interpretation

Enzymatic digest of casein and enzymatic digest of animal tissue provides nitrogen source, vitamins and growth factors; sodium chloride maintains balanced osmoticpressure; sorbitol is a fermentable sugar; No. 3 bile salt and crystal violet inhibit Gram-positive bacteria, potassiumtellurite inhibits non-o157 Escherichia coli, and cefixime inhibits Proteus; neutral red is a pH indicator; and agar is the coagulant of the culture medium.

Formulation

Ingredients	/liter
Enzymatic digest of casein	17.0g
Enzymatic digest of animal tissue	3.0g
Sorbitol	10.0g
Bile salt No.3	1.5g
Sodium chloride	5.0g
Neutral red	0.03g
Crystal violet	0.001g
Agar	15.0g
pH 7.1±0.2 at 25°C

Preparation

Weigh 51.5g of this product, add 1L of distilled water or deionized water, stir, heat and boil until completely dissolved, dispense into Erlenmeyer flasks, and sterilize at 121℃ for 15min. Melt the sterilized culture medium and cool it to about 45℃, add 1 tube of supporting reagent (SR0240) (0.25mg potassium tellurite and 0.005mg Cefixime) to every 100mL of basal culture medium, mix and pour into the plate.

Quality Control

Cultural characteristics observed after incubation at 35-37°C for 18-24hours

Quality control strains	Growth	Colony color
Escherichia coli ATCC25922	PR≥0.7	pale pink to red
Escherichia coli 0157:H7 NCTC12900	PR≥0.7	colorless
Staphylococcus aureus ATCC 25923	Total inhibition	–

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 isolation and differentiation of sorbitol-negative Escherichia coli serotype O157 from food and animal feed and other materials Principle and Interpretation Enzymatic ……

Introduction

Free-circulating nucleic acids, such as tumor-specific extracellular DNA fragments and mRNAs in the blood or fetal nucleic acids in maternal blood, are present in serum or plasma usually as short fragments, <1000bp (DNA). HiPure Circulating DNA Midi Kit enables efficient purification of these circulating nucleic acids from human plasma, serum, or urine.

This product is for research use only.

Video

Details

Specifications

Features	Specifications
Main Functions	Isolation circulating DNA from 1-5ml plasma, serum, body fluids using vacuum protocol
Applications	qPCR, liquid or solid chip analysis, hybridization and SNP detection, etc.
Purification method	Mini spin column
Purification technology	Silica technology
Process method	Manual (vacuum)
Sample type	Serum, plasma and other cell-free fluid samples
Sample amount	1-5ml
Elution volume	≥50μl
Time per run	≤60 minutes
Liquid carrying volume per column	4ml
Binding yield of column	1mg

Principle

This product is based on silica Column purification. The sample is lysed and digested with lysate and protease, DNA is released into the lysate. Transfer to an adsorption column. Nucleic acid is adsorbed on the membrane, while protein is not adsorbed and is removed with filtration. After washing proteins and other impurities, Nucleic acid was finally eluted with low-salt buffer.

Advantages

• High yield – most optimal process, free DNA (>50bp) can be obtained to the maximum extent
• High concentration – low elution volume, ensuring high nucleic acid concentration
• High purity – low alcohol binding method, completely removing inhibitor and protein pollution
• High recovery – DNA can be recovered at thelevel of PG by silica gel column purification

Kit Contents

Contents	D318201C	D318202C
Purification Times	10	50
Buffer ACL	50 ml	250 ml
Buffer ACB*	60 ml	300 ml
Buffer DCW1*	4.4 ml	22 ml
Buffer DCW2*	5 ml	10 ml
Proteinase K	110 ml	540 mg
Protease Dissolve Buffer	10 ml	30 ml
Carrier RNA	110 μg	110 μg
Nuclease Free Water	10 ml	20 ml
HiPure CFDNA Mini Columns	10	50
2 ml Collection Tubes	20	100
Extender Tube	10	50
Vac-Connector	10	50

Storage and Stability

Proteinase K, Carrier RNA should be stored at 2-8°C upon arrival. However, short-term storage (up to 12 weeks) at room temperature (15-25°C) does not affect their performance. The remaining kit components can be stored dry at room temperature (15-25°C) and are stable for at least 18 months under these conditions. The entire kit can be stored at 2-8°C, but in this case buffers should be redissolved before use. Make sure that all buffers are at room temperature when used.

Experiment Data

Free-circulating nucleic acids, such as tumor-specific extracellular DNA fragments and mRNAs in the blood or fetal nucleic acids in maternal blood, are present in serum or plasma usually as short fragments,

TGL18 Tabletop 21000rpm High Speed large capacity Swing out rotor 4x800ml universal Refrigerated Centrifuge Adapters for 5/10/15/50ml tubes. And holding Angle Rotors like 24×1.5/2ml, 6x50ml, 12x15ml…in high speed separation smooth.

TGL18 Universal Refrigerated Centrifuge Application:

Holding lots of Swing Out Rotors & Angle Rotors for options. Mainly used in animal and plant molecular biology, cell biology, food safety, life science, agriculture and forest science, animal husbandry science, biological products, pharmaceutical products and other fields of ideal equipment for the separation and precipitation of samples preparation.

TGL18 Universal Refrigerated Centrifuge Features:

1. With silent-block and shock absorbers that guarantees smooth and quiet operations & fast cooling.

2. The centrifuge body is made of high-quality steel, safe and reliable.

3.  Microprocessor digital control of all functions:speed, time,

temperature, acceleration/deceleration, RCF, 10 program memory, operation fault display.

4. Electronic safety lock alarm inside, just press down the top lid until it will lock in sealed and open up after separation automatically.

5. Easy open the centrifuge lid via pneumatic springs; the operation area of the centrifuge is at the front end.

6. RPM/RCF adjustable along with the speed setting calculating automatically.

7. 10 selective acceleration and deceleration rates for options

8. The self-diagnostic system provides a protection for imbalance over speed/voltage and electronic lock fault.

TGL18 Universal Refrigerated Centrifuge Technical Parameters:

Max Speed	21,000r/min	Max RCF	30,910xg
Max Volume	4x800ml	Power supply	AC220V,50HZ,7A
Timer	1~9h/59min	Noise	≤58dBA
Dimension	700×715×420mm	Net Weight	125KG
Speed Accuracy	±20r/min	Package(W*D*H)	Plywood box: 880x800x580mm

TGL18 Universal Refrigerated Centrifuge Matched Rotors:

Order No.	Rotor type	Max.Speed (rpm)	Max.Volume (ml)	Max.RCF (xg)
No30671	Swing out rotor	4,000	4x800ml	3,450
			Adapter for 4x23x5ml	3,450
			Adapter for4x19x10nl	3,450
			Adapter for4x14x15ml	3,450
			Adapter for4x5x50ml	3,450
No30801	Angle rotor	21,000	12×1.5/2ml	30,910
No30802	Angle rotor	15,000	40×0.5ml	22,920
No30803	Angle rotor	17,000	24×1.5/2ml	26,460
No30804	Angle rotor	13,500	30×1.5/2ml	19,340
No30844	Angle rotor	13,000	48×1.5/2ml	17,930
No30805	Angle rotor	16,000	16x5ml	22,020
No30806	Angle rotor	16,000	12x7ml	21,380
No30807	Angle rotor	10,000	12x15ml	11,840
No30808	Angle rotor	15,000	12x10ml	22,680
No30809	Angle rotor	15,000	8x20ml	22,680
No30811	Angle rotor	13,000	6x50ml	18,840
No30814	Angle rotor	12,000	6x100ml	16,390

The Corners of our Company____________________________________

Metal housing with 3-tiers protection. It can hold both swing out rotors and angle rotors in low speed and high speed spining to switch smoothly. And its Quiet noise, Less vibration & Fast cooling guarantee a perfect separation.