The BK virus is a member of the polyomavirus family. It has been suggested that this virus may be transmitted through respiratory fluids or urine, since infected individuals periodically excrete virus in the urine. BK viral infections are typically asymptomatic in healthy individuals, however very mild symptoms may appear including mild respiratory infections and fever. Infections with BK virus in immunocompromised or immunosupressed patients are much more severe and may involve renal dysfunction. In fact, in kidney transplant patients the immunosupressive drugs required for the transplant may allow the virus to replicate within the graft, resulting in a disease called BK virus nephropathy (BKVN). The JC virus is a type of human polyomavirus and is very common in the general population, infecting 70 to 90% of humans. Most people acquire JCV in childhood or adolescence. Typically the infection is subclinical and no of consequence in individuals with healthy immune systems. The initial site of infection may be the tonsils or the gastrointestinal tract, and the virus then remains latent in the gastrointestinal tract. JCV can also infect the tubular epithelial cells in the kidneys, where it continues to reproduce, shedding virus particles in the urine. Also, JCV can cross the blood-brain barrier into the central nervous system. JCV is known to cause the usually fatal progressive multifocal leukoencephalopathy (PML) by destroying oligodendrocytes in the brain in immunodeficient or immunosuppressed individuals. The JC and BK viruses are very similar, with their genomes sharing 75% homology. It is however important to differentiate between the viruses due to the differences in pathology and especially the invariably fatal outcome of PML which is only caused by the JC virus.
Storage Conditions and Product Stability All kit components can be stored for 2 years after the date of production without showing any reduction in performance.
All kit components should be stored at -20°C upon arrival.
Component
Cat. TM39350 (100 preps)
Cat. TM39310 (100 preps)
MDx TaqMan 2X PCR Master Mix
2 x 700 μL
–
BKV/JCV Primer & Probe Mix
280 μL
280 μL
BKV/JCV Positive Control
150 μL
150 μL
Nuclease-Free Water (Negative Control)
1.25 mL
1.25 mL
Product Insert
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Other Products
TGM12 Table top capillary vessel Haematocrit centrifuge
Product Info
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Product Info
TGM12 Table top capillary vessel Haematocrit centrifuge
Application:
Measure the ratio of blood corpuscle and separate microblood and micro solution.
Model: TGM12 Table top high speed capillary vessel centrifuge
Features:
Brushless DC motor, free maintenance, no powder pollution, micro computer control, digital display indicates the time、speed and RCF. Electric lid lock、 over speed and imbalance protection. The centrifuge body is made of high quality steel, Safe and reliable.
Short term stability: 2-8oC, Long term stability: See individual component labels
Stability:
> 2 years under recommended storage conditions
Analyte:
endo-Cellulase
Assay Format:
Spectrophotometer, Auto-analyser
Detection Method:
Absorbance
Wavelength (nm):
400
Signal Response:
Increase
Limit of Detection:
1.2 x 10-3 U/mL
Reproducibility (%):
~ 3%
Total Assay Time:
10 min
Application examples:
Fermentation broths, industrial enzyme preparations and biofuels research.
Method recognition:
Novel method
The K-CellG5-2V pack size has been discontinued (read more).
Cellulase Activity Assay Kit.
The CellG5 assay reagent for the measurement of endo-cellulase (endo-1,4-β-glucanase) contains two components; 1) 4,6-O-(3-Ketobutylidene)-4-nitrophenyl-β-D-cellopentaoside (BPNPG5) and 2) thermostable β-glucosidase. The ketone blocking group prevents any hydrolytic action by the β-glucosidase on BPNPG5. Incubation with an endo-cellulase generates a non-blocked colourimetric oligosaccharide that is rapidly hydrolysed by the ancillary β-glucosidase. The rate of formation of 4-nitrophenol is therefore directly related to the hydrolysis of BPNPG5 by the endo-cellulase. The reaction is terminated and the phenolate colour is developed on addition of Tris buffer solution (pH 9.0).
The CellG5 assay represents a huge step forward in the methodology for the measurement of cellulase that traditionally relied on substrates such as CM-cellulose, Avicel, cellooligosaccharides, filter paper or dyed polysaccharides including CMC Congo red or cellulose azure.
The CellG5 assay reagent for the measurement of endo-cellulase (endo-1,4-β-glucanase) contains two components; 1) 4,6-O-(3-Ketobutylidene)-4-nitrophenyl-β-D-cellopentaoside (BPNPG5) and 2) thermostable β-glucosidase. The ketone blocking group prevents any hydrolytic action by the β-glucosidase on BPNPG5. Incubation with an endo-cellulase generates a non-blocked colourimetric oligosaccharide that is rapidly hydrolysed by the ancillary β-glucosidase. The rate of formation of 4-nitrophenol is therefore directly related to the hydrolysis of BPNPG5 by the endo-cellulase. The reaction is terminated and the phenolate colour is developed on addition of Tris buffer solution (pH 9.0).
Compact and stylish designed, the BioShake iQ high-end thermoshaker lets you perform all your standard mixing runs with a minimum of adjustments. The BioShake iQ offers outstanding performance to handle a wide range of applications across biotechnology, pharmaceutical and academic research.
Small. Light. Efficient. Quiet.
For microplates, tubes and glass vials
Fast & high-precision heating
Temperature range: ambient to 99°C
Precise mixing from 200 – 3,000 rpm
Wide range of thermo adapters
Stylish aluminium housing
ADVANCED TECHNOLOGY
Save time.
By combining the mixing operation with the incubation phase, reaction process times and operator workload are reduced and efficiency of many procedures is increased, resulting in a higher throughput.
The first-class finished aluminium housing gives the BioShake iQ its essential functionality. It provides a high amount of security, device stability and ensures a long service life.
GENTLE MIXING OF SAMPLES
By planar orbital motion
German designed and manufactured, BioShake iQ thermoshaker offer an ultra-efficient, 2-dimensional shaking axis so that samples mix completely in a fraction of the time of competing systems.
The mixing orbit of 2.0 mm is always constant. The orbital shaking is precisely controlled, in fact, that you need never spin down your plates after mixing. Even tubes, vials, high density plates, or low sample volumes, offer no obstacle for these precision tools.
Fully adjustable between 200 rpm and 3,000 rpm, well beyond the speeds of most other brands, guarantees fast, splatter-free, mixing for tubes, glass vials or across an entire 384-well microplate.
HOMOGENEOUS HEATING
Using large-area heating source in combination with digital sensor electronic
The BioShake iQ heats from ambient to 99°C in a short time, provides ease of use features, amazing comfort and maximum safety.
Within the BioShake iQ thinnest large-area heating elements and sensors are integrated. During the heat up time the special electronic control system guarantees the same temperature for all vessels with minimal deviations. Temperatures are selectable from ambient temperature to 99°C in steps of 1.0°C. The nominal regulation accuracy is better than ±0.1°C with a uniformity of temperature distribution better than ±0.5°C at 45°C across the heating surface.
Exchangeable thermo adapter plates and thermal blocks enable a perfect adaptation to microplates, tubes or glass vials.
UNIVERSAL SPRING CLAMPS
Suitable for all microplates
In the corners eight spring clamps are inserted for easy fixation of skirted microplates anddeep well plates in SBS format 127.7 x 85.5 mm without an attached adapter. These spring clamps lock the microplate quickly and safely, even at the highest mixing frequencies.
For flexible and deformable PCR plates we recommend using of the related PCR adapter.
Fast mixing processes with frequent plate changes can be performed in the routine as easy and safe.
COMFORT
Simple intuitive operation and programming
The BioShake iQ is operated from the front face of the enclosure which includes touch buttons and a display.
Special buttons for start, stop and storage of time and mixing modes enable the instrument to run complex applications. This opens new points of view on the daily laboratory work and optimizes routine application enormously.
The short mix button allows short and fast mixing in between.
The two line LCD display guarantees simultaneous and safe reading of all programmed and measured parameters as time, mixing frequency and temperature.
EXCHANGABLE THERMO ADAPTERS
For a wide range of applications
The BioShake iQ comes with a variety of standardized and specific adapter plates. The replacement of the adapters are very simple.
Perfect shaped adapters allow an optimal fit for standard tubes, lysis tubes, microplates, glass vials and other sample vessels. An excellent temperature uniformity and homogeneity is guaranteed for all samples.
UNIQUE DESIGN MEETS HIGH-END TECHNOLOGY
First-class finished aluminium housing
Unique and efficient design combined with the most compact housing result in beautiful and well-defined laboratory equipment. Therefore, the first-class finished aluminium housing gives the BioShake iQ its essential functionality. It provides a high amount of security, device stability and ensures a long service life.
Safety of the user and ease of use are clearly a priority.
MADE IN GERMANY
High-end instruments for daily routine
A perfectly harmonious blend of high-tech and handmade. “Made in Germany” has always been a recipe for success for QInstruments. 100% of QInstruments production takes place in Germany.
The focus is on human diligence and on being environmentally friendly. The company upholds its quality guarantee by means of consistent quality management. For more than 15 years these lab automation professionals from Jena have used only high-quality materials to ensure sustainable production, applied innovative thinking and undertaken research in a future-oriented way – all as a matter of course.
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For microplates, tubes and glass vials Fast & high-precision heating Temperature range: ambient to 99°C Precise mixing from 200 – 3,000 rpm Wide range of thermo adapters Stylish aluminium housing
