Short term stability: 2-8oC, Long term stability: See individual component labels
Stability:
> 2 years under recommended storage conditions
Analyte:
Ammonia, Nitrogen, YAN
Assay Format:
Spectrophotometer, Microplate, Auto-analyser
Detection Method:
Absorbance
Wavelength (nm):
340
Signal Response:
Decrease
Linear Range:
0.2 to 7 µg of ammonia per assay
Limit of Detection:
0.07 mg/L
Reaction Time (min):
~ 5 min
Application examples:
Grape juice, wine, fruit juices, soft drinks, dairy products (e.g. milk), dietetic food, soy sauce, eggs and egg products, cheese, meat, processed meat, seafood, bakery products (and baking agents), fertilisers, pharmaceuticals, tobacco, cosmetics, water, Kjeldahl analysis, paper (and cardboard), water and other materials (e.g. biological cultures, samples, etc.).
Method recognition:
Methods based on this principle have been accepted by MEBAK
Ammonia Assay Kit, for the rapid measurement and analysis of ammonia in all samples, including grape juice and wine (and other foods/beverages).
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).
170.5 mL of prepared reagent (e.g. 550 assays of 0.31 mL)
Content:
170.5 mL of prepared reagent (e.g. 550 assays of 0.31 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:
Decrease
Linear Range:
up to 1.8 g/L of acetic acid per assay
Limit of Detection:
10 mg/L (recommended assay format)
Reaction Time (min):
~ 10 min
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 analyser format test kit is suitable for the specific measurement and analysis of acetic acid (acetate) in beverages and food products. On calibration, the prepared reagent is linear to > 28 micrograms of acetic acid per mL of assay solution.
View our complete list of organic acid assay kits.
Advantages
Very stable reagent when prepared for auto-analyser applications (> 7 days at 4oC)
PVP incorporated to prevent tannin inhibition
Linear calibration (R2 ~ 0.9995) up to 30 μg/mL of acetic acid in final reaction solution
Validated by the University of Wine, Suze la Rousse, France
Very rapid reaction
Very competitive price (cost per mL of reagent)
All reagents stable for > 2 years
Extended cofactors stability
Document
The Acetic Acid analyser format test kit is suitable for the specific measurement and analysis of acetic acid (acetate) in beverages and food products. On calibration, the prepared reagent is linear to > 28 micrograms of acetic acid per mL of assay solution.
Preservation and isolation of both cf-DNA and cf-RNA from a single tube
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 8.7 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 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. Plasma recovered from Norgen’s cf-DNA/cf-RNA Preservative Tubes is also compatible with any other cf-DNA and/or cf-RNA purification method. The purified cf-DNA, ct-DNA and cf-RNA are compatible with any downstream application assays, including PCR, qPCR, rt-qPCR, methylation-sensitive PCR, Southern Blot analysis, gene expression analysis, microarrays and NGS.
This product is for research use only and not for use in diagnostic procedures.
Performance
Norgen’s cf-DNA/cf-RNA Preservative Tubes 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 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. When blood collected on Norgen’s cf-DNA/cf-RNA tubes is processed for plasma recovery no buffy coat will be generated and the Circulating tumor cells (CTCs) will be located at the bottom of the tube with the blood sediment. CTCs are stable for 14 days at room temperature where it can be extracted from the blood sediment or from whole preserved blood for cell sorting or for cf/DNA or cf-RNA purification.
Plasma samples produced from the whole blood sample collected into Norgen’s cf-DNA/cf-RNA Preservative Tubes and purified using Norgen’s Plasma/Serum Cell-Free Circulating DNA Purification Kits or Norgen’s Plasma/Serum RNA Purification Kits yield concentrated, high-quality and inhibitor-free cf-DNA/ct-DNA or cf-RNA for any downstream application.
Workflow
NOTE: This product is for research use only. For the CE marked version, see Cat. Dx63950
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 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.
Do not freeze unfilled Norgen cf-DNA/cf-RNA Preservative Tubes 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 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 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 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 are stable for up to 14 days at room temperature (15-25ºC).
