Before use, calibration is necessary, typically every three months. For infrequent use, calibration may be done every six months. Calibration can be achieved through weight calibration, where 1 mL of distilled water at 20°C equals 0.9982 g (using a milligram electronic analytical balance). Select a pipettor with an appropriate volume...

The personnel responsible for consumables should regularly inventory all consumables in the laboratory, submit timely procurement requests, and conduct inspections upon receiving consumables. Laboratory testing personnel must strictly adhere to operating procedures, conduct quality checks on received reagent kits, and assess the specificity, sensitivity, compliance rate, and detection limit of...

Commonly used laboratory consumables, such as pipette tips, pipettes, and PCR plates, are typically made of polypropylene (PP). Cell culture plates/bottles, enzyme-linked immunosorbent assay (ELISA) plates, or chemiluminescence plates are often made of polystyrene (PS). When it comes to centrifuge tubes, there are various plastic materials available, such as polypropylene...

Plastic Products Plastic ware, beakers, dilution bottles, wash bottles, plastic graduated cylinders, bubble wrap, plastic centrifuge tubes, plastic measuring cups, PE gloves, funnel stands, test tube racks, alcohol bottles, pipettes, plastic bottles, plastic filters, plastic culture dishes, pipette stands, fluoride bottles, plastic pipettes, centrifuge tube boxes, slide boxes, colorimetric tube...

In general, commonly used laboratory items such as pipette tips, pipettes, and PCR plates are made of polypropylene. Cell culture plates/bottles, enzyme-linked immunosorbent assay (ELISA) plates, or chemiluminescent plates are often made of polystyrene. As for centrifuge tubes, various plastic materials may be used, and let's take a look at...

-- J&K Scientific exclusively offers two monomers developed by Prof. Yin. The fossil resources derived 4,4’-biphenyldicarboxylic acid is a significant monomer in polymer industry [1]. However, its production route is lengthy and dirty with low selectivity, and the corresponding polymers are also poorly biodegradable. In view of increasing concerns about...