Urease is a naturally occurring enzyme that catalyses the hydrolysis of urea. It is a polypeptide that is found in many organisms, including seeds, microorganisms, plants, and animals. It consists of six identical chains found in the cytoplasm of living cells. One subunit contains two nickel ions, the other two require three nickel ions. The […]
Automated storage and retrieval systems (ASRS) are designed to automate the storage and retrieval of parts and items. These types of systems first appeared in the 1960s, and started by handling large, palletized loads. However, as they became more popular, they began to handle smaller, more individual loads. Today, AS/RS operate on a computer-controlled system […]
A 96-well deep well plate is made with high-grade chemical-resistant polypropylene and is ideal for various automated processes. Its 2.2 ml capacity makes it suitable for a wide range of applications, including cell cultures, ELISA, and High-Throughput Screening. Its tamper-resistant design makes it ideal for sample storage and transfer to and from the PCR machine. […]
An image is captured by a cooled-CCD array camera. This image sensor consists of more than one million pixels that can be transferred across the chip and assigned a gray-scale value of 12 bits. These images can then be stored in the computer's memory and displayed within a second. A one-megapixel camera typically operates at […]
The DNA extractor is a laboratory apparatus that is used to isolate and purify DNA from samples for sequencing. The process usually involves a bead beater that vibrates a solution at high speeds. The glass beads break up cells and precipitate DNA. This device is also referred to as a french press, lysing device, or […]
M4RT is a cryoprotectant medium designed for use with clinical viruses and chlamydial agents. It is a convenient and safe storage medium that does not require refrigeration until inoculation. However, M4RT must be handled carefully because it may lose its antimicrobial activity if it is overheated or incubated before being used. It is important to […]
The amount of antibody coated on the plate shall be proportional to the sensitivity of the assay. For most immunoassays, the 4 or 5 parameter logistic model is far better than the linear, quadratic or log-log linear fashions. These fashions are available in several software program packages, and are easy to implement even in an […]
Acute serum samples had been examined with the LifeAssay Test‐itTM Typhoid IgM lateral flow assay detecting IgM antibodies in opposition to S. Typhi O antigen, CTKBiotech Onsite Typhoid IgG/IgM Combo Rapid‐test cassette lateral flow assay detecting IgG and IgM antibodies against S. Typhi O and H antigens and SD Bioline line assay for IgG and […]
Checking and recalibrating your pipettor with the tips that you use may be wanted. Each pipettor is inspected and validated by qualified technicians in accordance with the VWR Quality System. Lubricant tube 1g is available underneath (check the spare parts list on VWR.com) 2µL and 10µL Single channel fashions shouldn't be disassembled, so you could […]