Short term stability: 2-8oC, Long term stability: See individual component labels
Stability:
> 2 years under recommended storage conditions
Analyte:
L-Malic Acid
Assay Format:
Spectrophotometer, Microplate
Detection Method:
Absorbance
Wavelength (nm):
340
Signal Response:
Increase
Linear Range:
0.5 to 30 µg of L-malic acid per assay
Limit of Detection:
0.25 mg/L
Reaction Time (min):
~ 3 min
Application examples:
Wine, beer, fruit juices, soft drinks, candies, fruit and vegetables, bread, cosmetics, pharmaceuticals and other materials (e.g. biological cultures, samples, etc.).
Method recognition:
Methods based on this principle have been accepted by AOAC, EEC, EN, NF, NEN, DIN, GOST, OIV, IFU, AIJN, NBN, ISO and MEBAK
The K-LMAL-58A pack size has been discontinued (read more)
L-Malic Acid (Regular) Assay Kit, for the specific assay of L-malic acid (L-malate) in beverages and food products.
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 MegaQuantTM Wave Spectrophotometer (D-MQWAVE).
Need other assay kits? View our full list of organic acid assay kits.
Advantages
PVP incorporated to prevent tannin inhibition
Both enzymes supplied as stable suspensions
Very competitive price (cost per test)
All reagents stable for > 2 years after preparation
Very rapid reaction (~ 3 min)
Mega-Calc™ software tool is available from our website for hassle-free raw data processing
Standard included
Extended cofactors stability
Suitable for manual and microplate format
Other Products
Acetic Acid GK Assay Kit (Analyser Format)
Product Info
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Product Info
K-ACETGK
SKU: 700004257
110 mL of prepared reagent (e.g. 500 assays of 0.22 mL)
Content:
110 mL of prepared reagent (e.g. 500 assays of 0.22 mL)
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:
Acetic Acid
Assay Format:
Auto-analyser
Detection Method:
Absorbance
Wavelength (nm):
340
Signal Response:
Increase
Linear Range:
up to 1.8 g/L of acetic acid per assay
Limit of Detection:
~ 10 mg/L
Reaction Time (min):
8 min at 25oC or 5 min at 37oC
Application examples:
Wine, beer, fruit and fruit juices, soft drinks, vinegar, vegetables, pickles, dairy products (e.g. cheese), meat, fish, bread, bakery products (and baking agents), ketchup, soy sauce, mayonnaise, dressings, paper (and cardboard), tea, pharmaceuticals (e.g. infusion solutions), feed and other materials (e.g. biological cultures, samples, etc.).
Method recognition:
Improved method
The Acetic Acid GK format test kit is for use with auto-analysers and is suitable for the specific measurement and analysis of acetic acid (acetate) especially in wines, fruit juices, beverages and food products.
As part of Megazyme’s overall commitment to providing the highest quality products, we have developed this acetic acid kit that provides a specific and rapid assay for use with auto-analysers. The kit assay is based on the conversion of NAD+ to NADH and therefore provides a positive reaction (increase in absorbance) which offers a more robust assay.
The reagents, as supplied, are stable for a minimum of 2 years and the prepared reagents are stable for a minimum of 1 week (on-board stability). In addition, the prepared reagents can be stored frozen for longer term stability (see K-ACETGK Booklet for more details).
View more of our acetic acid and organic acid assay kits.
Advantages
Excellent reagent stability
> 7 days at 4oC or > 2 years below -10oC when prepared for auto-analyser applications
> 2 years as supplied
Very rapid reaction (~ 5 min at 37oC)
Linear calibration (R2 ~ 0.997 up to 1.8 g/L sample)
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The Acetic Acid GK format test kit is for use with auto-analysers and is suitable for the specific measurement and analysis of acetic acid (acetate) especially in wines, fruit juices, beverages and food products.
Plasma/Serum Exosome and Free-Circulating RNA Isolation Kits
Product Info
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Product Info
Overview
Isolate all sizes of RNA, including microRNA, irrespective of size or GC content, without bias.
Versatile sample input ranges
Isolate all sizes of free-circulating RNA, including microRNA
The purified exosomal RNA is free from any circulating RNA-binding proteins
No phenol extractions, Proteinase K treatment, nor carrier RNA
No time-consuming ultracentrifugation, filtration nor special syringes are required
No precipitation reagents, nor overnight incubation required
Concentrate isolated exosomal RNA and are free-circulating RNA into a flexible elution volume ranging from 50 µL to 100 µL
Purification is based on spin column chromatography that uses Norgen’s proprietary resin separation matrix
These kits provide a fast, reliable and convenient method to sequentially isolate and concentrate exosomal RNA as well as Free-Circulating RNA from different plasma/serum sample volumes. The purification is based on spin column chromatography that employs Norgen’s proprietary resin. These kits are designed to isolate all sizes of RNA, including microRNA as well as all sizes of the free-circulating protein-bound RNA, including microRNA. These kits provide a clear advantage over other available kits in that they do not require any special instrumentation, protein precipitation reagents, extension tubes, phenol/chloroform or protease treatments. Moreover, these kits allow the user to elute into a flexible elution volume ranging from 50 µL to 100 µL. The RNA isolated from the purified exosomes is free from any protein-bound circulating RNA and is of the highest integrity. Moreover, the free-circulating, protein-bound, RNA is free from any exosomal RNA. The purified RNA can be used in a number of downstream applications including real time PCR, reverse transcription PCR, Northern blotting, RNase protection and primer extension, and expression array assays.
Plasma/Serum Exosome and Free-Circulating RNA Isolation Mini Kit
For sample volumes ranging from 50 µL to 1 mL.
Plasma/Serum Exosome and Free-Circulating RNA Isolation Midi Kit
For sample volumes ranging from 1 mL to 4 mL.
Plasma/Serum Exosome and Free-Circulating RNA Isolation Maxi Kit
All sizes, including miRNA and small RNA (< 200 nt)
Elution Volume
50 – 100 µL
Time to Complete 10 Purifications
35 – 40 minutes
Average Yields*
Variable depending on specimen
*Please check page 5 of the product insert for the average yields and the common RNA quantification methods
Storage Conditions and Product Stability All solutions should be kept tightly sealed and stored at room temperature. This kit is stable for 2 years after the date of shipment. It is recommended to warm Lysis Buffer A for 20 minutes at 60°C if any salt precipitation is observed.
Important Note This kit is suitable for the purification of exosomes from fresh or frozen serum or plasma prepared from blood collected on either EDTA or Citrate. Plasma samples prepared from blood collected on heparin should not be used as heparin can significantly interfere with many downstream applications such as RT-PCR.
Biotin-PEG2-alkyne is a short PEG linker featuring a biotin group and a terminal alkyne. Biotin is useful for affinity-based applications such as pull-down assays while terminal alkynes are used in copper (I) click chemistry with azides.
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Biotin-PEG2-alkyne is a short PEG linker featuring a biotin group and a terminal alkyne. Biotin is useful for affinity-based applications such as pull-down assays while terminal alkynes are used in copper (I) click chemistry with azides.