Propargyl-PEG12-amine is a heterobifunctional reagent that enables amide formation with carboxylic acids, activated NHS esters, carbonyls (ketone, aldehyde) etc. The propargyl group is reactive with azide compounds via copper catalyzed azide-alkyne Click Chemistry to yield a stable triazole linkage. The PEG units enhance the hydrophilicity of the molecule in aqueous media. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Propargyl-PEG12-amine is a heterobifunctional reagent that enables amide formation with carboxylic acids, activated NHS esters, carbonyls (ketone, aldehyde) etc. The propargyl group is reactive with azide compounds via copper catalyzed azide-alkyne Click Chemistry to yield a stable triazole linkage. The PEG units enhance the hydrophilicity of the molecule in aqueous media. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.

Introduction

Free-circulating nucleic acids, such as tumor-specific extracellular nucleic acid fragments and mRNAs in the blood or fetal nucleic acids in maternal blood, are present in serum or plasma usually as short fragments, <1000bp(Nucleic Acid). The HiPure Circulating Nucleic acid Micro Kit enables efficient purification of these circulating nucleic acids from human plasma, serum, or urine. Samples can be either fresh or frozen (provided that they have not been frozen and thawed more than once). Free-circulating cell-free DNA, RNA or viral nucleic acids are eluted in Nuclease Free Water, ready for use in amplification reactions or storage at -30 to -15°C. Purified nucleic acids are free of proteins, nucleases, and other impurities.

Details

Specifications

Features	Specifications
Main Functions	Isolation circulating DNA from 0.6ml plasma,serum, body fluids
Applications	qPCR, liquid or solid chip analysis, hybridization and SNP detection, etc.
Purification method	Mini spin column
Purification technology	Silica technology
Process method	Manual (centrifugation or vacuum)
Sample type	Serum, plasma and other cell-free fluid samples
Sample amount	0.6ml
Elution volume	≥30μl
Time per run	≤40 minutes
Liquid carrying volume per column	800μl
Binding yield of column	100μg

Principle

This product is based onsilica column purification. The sample is lysed and digested with lysate andprotease, DNA is released into the lysate. Transfer to an adsorption plate andfilter column. Nucleic acid is adsorbed on the membrane, while protein is notadsorbed and is removed with filtration. After washing proteins and otherimpurities, 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 recoveredat the level of PG by silica gel column purification

Kit Contents

Contents	D318002	D318003
Purification Times	50 Preps	250 Preps
Buffer ACL	40 ml	200 ml
Buffer DCW1	22 ml	110 ml
Buffer DCW2*	20 ml	2 x 50 ml
Proteinase K	34 mg	180 mg
Protease Dissolve Buffer	1.8 ml	10 ml
Carrier RNA	110 μg	310 μg
Nuclease Free Water	10 ml	30 ml
HiPure CFDNA Mini Columns	50	250
2 ml Collection Tubes	100	5 x 100

Storage and Stability

Proteinase K, Carrier RNAshould be stored at 2-8°C upon arrival. However, short-term storage (up to 12weeks) at room temperature (15-25°C) does not affect their performance. Theremaining kit components can be stored dry at room temperature (15-25°C) andare stable for at least 18 months under these conditions. The entire kit can bestored 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.

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

K-CITR

SKU: 700004274

72 assays (manual) / 720 assays (microplate) / 840 assays (auto-analyser)

Content:	72 assays (manual) / 720 assays (microplate) / 840 assays (auto-analyser)
Shipping Temperature:	Ambient
Storage Temperature:	Short term stability: 2-8oC, Long term stability: See individual component labels
Stability:	> 2 years under recommended storage conditions

Analyte:	Citric Acid
Assay Format:	Spectrophotometer, Microplate, Auto-analyser
Detection Method:	Absorbance
Wavelength (nm):	340
Signal Response:	Decrease
Linear Range:	1.0 to 100 µg of citric acid per assay
Limit of Detection:	0.491 mg/L
Reaction Time (min):	~ 5 min
Application examples:	Grape juice, wine, beer, fruit juices, soft drinks, tea, dairy products (e.g. cheese), meat, processed meat, vegetable and fruit products, bakery products, paper, pharmaceuticals, cosmetics and other materials (e.g. biological cultures, samples, etc.).
Method recognition:	Methods based on this principle have been accepted by MEBAK, OIV, EU, ISO2963, AOAC and IFU22 (NOTE: If the enzyme oxaloacetate decarboxylase is present in the sample, some of the oxaloacetate product is converted to pyruvate. Therefore, to ensure citric acid is measured quantitatively, D-lactate dehydrogenase (D-LDH) is employed to efficiently convert any pyruvate produced into D-lactate and NAD+).

The Citric Acid test kit is a flexible and simple method for the rapid and reliable measurement and analysis of citric acid (citrate) in foods, beverages and other materials.

Note for Content: The number of manual tests per kit can be doubled if all volumes are halved.  This can be readily accommodated using the MegaQuant^TM  Wave Spectrophotometer (D-MQWAVE).

View our full list of organic acid test kits.

Advantages

• Extended cofactors stability. Dissolved cofactors stable for > 1 year at 4^oC.
• Reconstituted citrate lyase stable for 4 weeks at 4^oC / 6 months below -10^oC 
• Buffer / cofactor / enzyme tablets for efficient use of kit components 
• PVP incorporated to prevent tannin inhibition 
• Very competitive price (cost per test) 
• Mega-Calc™ software tool is available from our website for hassle-free raw data processing 
• Standard included
• Suitable for manual, microplate and auto-analyser formats

The Citric Acid test kit is a flexible and simple method for the rapid and reliable measurement and analysis of citric acid (citrate) in foods, beverages and other materials.