Highly Sensitive Assay to Screen for Benzoic Acid
Visual Readout (sample dependent: milk, red/pink)
Detection range of 1ppm to 1500ppm
Tube or Plate based options available
Compatible with the Nix Sensor or plate readers to obtain quantitative results.
The Benzoic Acid Detection Kit provides a rapid, simple, sensitive, and reliable test suitable for screening of Benzoic Acid concentration.
Benzoic Acid is a white solid that is an extensively used preservative. Although this preservative prevents or delays nutritional losses due to microbiological, enzymatic or chemical changes of foods during its shelf life there is a suspicion that small amounts of benzene may be formed from benzoic acid in nonalcoholic beverages in the presence of ascorbic acid. Benzoic acid and ascorbic acid are food additives which must be declared on the food. Benzoic acid or E 210 is a preservative which also occurs naturally, for instance, in cranberries. A maximum amount of 150 mg/l benzoic acid may be added to non-alcoholic flavored beverages.
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RNA/DNA Purification Kits
Product Info
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Product Info
Overview
Sequentially isolate and purify total RNA and DNA from a single sample
Two column system: one for DNA and one for RNA
The RNA column is for the purification of total RNA including microRNA
No need to split the lysate, or to use phenol or precipitation methods
Rapid and efficient spin column procedure – it takes only 30 minutes
Purification is based on spin column chromatography that uses Norgen’s proprietary resin separation matrix
These kits provide a rapid method for the isolation and purification of total RNA and DNA sequentially from a single sample of cultured animal cells and tissues, blood, bacteria, yeast, or fungi. The lysate is passed over two columns: 1) a DNA column and 2) an RNA column. Total RNA of all sizes is purified, including microRNA. Both DNA and RNA are of the highest purity and yield.
These kits are ideal for researchers who are interested in studying the genome and transcriptome of a single sample, such as for studies of microRNA profiling, gene expression including gene silencing experiments or mRNA knockdowns, studies involving biomarker discovery, and for characterization of cultured cell lines. Norgen’s RNA/DNA Purification Kits are especially useful for researchers who are isolating macromolecules from precious, difficult to obtain or small samples such as biopsy materials or single foci from cell cultures, as they eliminate the need to fractionate the sample. Furthermore, analysis will be more reliable since the RNA and DNA are derived from the same sample, thereby eliminating inconsistent results. The purified macromolecules are of the highest purity and can be used in a number of different downstream applications
RNA/DNA Purification Kit (Spin Column)
Maximum column binding capacity of 50 μg for RNA and 20 μg for DNA.
RNA/DNA Purification Micro Kit (Micro)
The purified RNA and DNA fractions can be eluted in as little as 20 μL. Ideal for cell number inputs of 500,000 and as little as 5 cells. Maximum column binding capacity of 35 μg for RNA and 10 μg for DNA.
Maximum Amount of Starting Material: Animal Cells Animal Tissues Blood Bacteria Yeast Fungi Plant Tissues
5 x 106 cells 25 mg (for most tissues)** 200 μL 1 x 109 cells 1 x 108 cells 50 mg 50 mg
Time to Complete 10 Purifications
30 minutes
Average Yield*: HEK 293 Cells (1 x 106 cells) HEK 293 Cells (1 x 106 cells) Liver (15 mg) Liver (15 mg)
10-15 μg RNA 2-4 μg DNA 30-35 μg RNA 4-6 μg DNA
*Average Yield will vary depending upon a number of factors including species, growth conditions used, and development stage.
**Tissue inputs of up to 40 mg may be used, however for inputs greater than the recommended 25 mg, cross-contamination of the RNA and DNA fractions is possible.
Storage Conditions and Product Stability Store Proteinase K at -20°C upon arrival. All other solutions should be kept tightly sealed and stored at room temperature. This kit is stable for 1 year after the date of shipment.
TIGIT is an immune receptor present on some T cells and Natural Killer cells. TIGIT binds with high affinity to the poliovirus receptor (PVR) which causes increased secretion of IL10 and decreased secretion of IL12B and suppresses T cell activation by promoting the generation of mature immunoregulatory dendritic cells. Through the CD226/TIGIT-PVR pathway, TIGIT regulates T cell mediated immunity. In cancer, TIGIT and PD-1 have been shown to be over-expressed on tumor antigen-specific CD8+ T cells and CD8+ tumor infiltrating lymphocytes (TILs) from individuals with melanoma. Blockade of TIGIT and PD-1 led to increased cell proliferation, cytokine production, and degranulation of tumour antigen-specific CD8+ T cells and TIL CD8+ T cells. It can be considered an immune checkpoint.
1. Microprocessor control, less noisily, it is widely used to qualitative analysis of blood serum, plasma and urea in the fields of hospital, laboratory and biochemistry.
2. Brushless motor, free maintenance, no powder pollution, quick in speed up and down.
3. Special program, HLA and SERO separately.
5. Micro computer control system, LED display the RCF,time and speed.
6.. Electric lid lock, compact design, super speed and imbalance protection.
TD4 Technical Parameter:
Max. Speed
4000rpm
Max. RCF
2000
Max. Capacity
12×7
Time Range
0~99min
RPM/RCF Convert
Yes
Noise (dB)
≤ 55
Temperature
Normal
Acc/Dcc
10 Kinds
Speed Accuracy
±20r/min
Temperature Accuracy
/
Voltage(V/Hz)
AC 220V/110V 50HZ/60HZ
Size (W x D x Hmm)
485×320×255mm
Net Weight(Kg)
24KG
Matched Rotors for TD4
Order No.
Rotor
Max Speed (rpm)
Max Volume(ml)
Max. RCF(×g)
NO31501
SERO Rotor
3000
12×7/5ml(10-13*60-100mm)
2000
NO31502
HLA Rotor
4000
12×2/1.5/0.5ml
1000
Rotor Name
Max RCF(×g)
Use
HLA rotor for Lymphocyte washing
2000
Lymphocyte separation incubated cell separation
1000
Hematoblast extenterate(thrombin disposal)
1000
Lymphocyte washing
SERO rotor for erythrocyte washing
500
Blood type determination, the image of the hematocyte
1000
The test of intersectant aptness
1000
Hematocyte washing, the distillation of the serum and plasma
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TD4 cell washer centrifuge it is widely used to qualitative analysis of blood serum, plasma and urea in the fields of hospital, laboratory and biochemistry.