The L-Malic Acid test kit is suitable for the measurement and analysis of L-malic acid in grapes, grape juice and wine using the MegaQuant™ colorimeter (measurement at 505 nm). Suitable for white and red wines at all stages of the winemaking process.
Detail
K-LMALMQ
60 assays per kit
Content:
60 assays per kit
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:
L-Malic Acid
Assay Format:
Spectrophotometer
Detection Method:
Absorbance
Wavelength (nm):
505
Signal Response:
Increase
Linear Range:
0.15 to 15 µg of L-malic acid per assay (i.e. 0.007-0.75 g/L with a 20 µL sample volume)
Limit of Detection:
15.4 mg/L
Reaction Time (min):
~ 6 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.).
The L-Malic Acid test kit is suitable for the measurement and analysis of L-malic acid in grapes, grape juice and wine using the MegaQuant™ colorimeter (measurement at 505 nm). Suitable for white and red wines at all stages of the winemaking process.
Highly stable reagents (at least three seasons use)
Very competitive price (cost per test)
Spectrophotometer / laboratory / expertise not required
Very simple procedure
Rapid reaction time (~ 6 min)
Standard included
Other Products
cf-DNA/cf-RNA Preservative Tubes Dx
Product Info
Document
Product Info
Overview
CE-IVD marked in accordance with EU Directive 98/79/EC
Ideal for use in in vitro diagnostic workflows
Fixative-free preservative, no cross-linking of DNA
Preserve cf-DNA/ct-DNA for 30 days at ambient temperature and for up to 8 days at 37°C.
Preserve cf-RNA for 30 days at ambient temperature
Preserve Circulating Tumour Cells (CTCs) for 14 days at ambient temperature
No plasma volume loss after shipping/transportation
Prevent hemolysis allowing better separation of plasma
Prevent apoptosis of blood cells and fragmentation of genomic DNA
Produce high quality/quantity of plasma cf-DNA/ct-DNA/cf-RNA
Vacuumed to draw 8.4 mL of blood in 10 mL tubes
The procedure for plasma isolation using this kit is compliant with ISO 20186-3:2019
Norgen’s cf-DNA/cf-RNA Preservative Tubes Dx are closed, evacuated plastic tubes for the collection and the preservation of cf-DNA, circulating tumor DNA, cf-RNA and circulating tumor cells in human whole blood samples during storage and shipping. Using these tubes in combination with Norgen’s Plasma/Serum Cell-Free Circulating DNA Purification Kits or Norgen’s Plasma/Serum RNA Purification Kits enables the purification and concentration of an inhibitor-free cf-DNA/ct-DNA/cf-RNA in a very small elution volume.
These tubes are ideal for collecting and preserving cf-DNA and cf-RNA samples for in vitro diagnostic use for medical purposes.
Performance
Norgen’s cf-DNA/cf-RNA Preservative Tubes Dx abridge the collection/processing of whole blood for the subsequent purification of cf-DNA and/or cf-RNA. The cf-DNA/cf-RNA Preservative Tubes Dx preserve and inhibit the programmed cell-death (apoptosis) of the blood, hence preventing the release of intracellular DNA/RNA into plasma. Whole blood samples can be shipped and stored at room temperature for the subsequent processing of plasma. The cf/ct DNA and cf-RNA levels are stable for up to 30 days at room temperature. The cf-DNA is also stable for up to 8 days at 37°C.
Workflow
NOTE: This product is not available for sale in the United States. For the research use only version, see Cat. 63950
Up to 30 days at room temperature (15-25°C) Up to 8 days at 37°C
Length of cf-RNA Preservation
Up to 30 days at room temperature (15-25°C)
Length of CTCs Preservation
Up to 14 days at room temperature (15-25°C)
Storage Conditions and Product Stability
When stored at 15-30°C, unfilled Norgen cf-DNA/cf-RNA Preservative Tubes Dx are stable through the expiration date. See tube label for expiry date.
Short-term storage/shipping at -20°C to 37°C for up to 10 days is acceptable for unfilled Norgen cf-DNA/cf-RNA Preservative Tubes Dx.
Do not freeze unfilled Norgen cf-DNA/cf-RNA Preservative Tubes Dx for long term storage over 10 days. Freezing unfilled tubes may lead to loss of vacuum and precipitation may occur.
Cell-free DNA in blood samples collected in Norgen’s cf-DNA/cf-RNA Preservative Tubes Dx is stable for up to 30 days when stored at room temperature (15-25°C)
Cell-free DNA in blood samples collected in Norgen’s cf-DNA/cf-RNA Preservative Tubes Dx is stable for up to 8 days when stored at 37ºC.
Cell-free RNA in blood samples collected in Norgen’s cf-DNA/cf-RNA Preservative Tubes Dx is stable for up to 30 days when stored at room temperature (15-25°C)
Circulating tumor cells (CTCs) in blood samples collected in Norgen’s cf-DNA/cf-RNA Preservative Tubes Dx are stable for up to 14 days at room temperature (15-25ºC).
DMSO resistant peelable heat sealing foil which is suitable for low temperature storage, high temperature uses and PCR testing.
Heat sealing offers a 100% effective method of plate sealing, for complete seal integrity, as well as being quick and cost effective
Our PeelASeal Foil Super is a laminate seal compatible with all plate types
It can be removed by peeling, even with a plate which has been removed directly from -80°C storage
PeelASeal Foil Super forms a complete seal to a plate enabling very low temperature uses, including very low temperature storage, and high temperature uses, such as PCR
The seal demonstrates high solvent resistance (including DMSO) and can be utilized for short term compound storage at room temperature
The seal is available as sheets, for use with manual and semi-automated sealers, such as our HeatASeal 500 Sealing Machine
Also available in multiple roll formats compatible with specified automated heat sealers, such as our Wasp or Chameleon XT
