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A plastic dropper is relatively inexpensive and disposable, so they are often used to avoid cross-contamination. In a solution containing cells and/or protein, it reduces the loss of cell and/or protein that binds to glass. Some plastic pipettes include a long flexible tube that can be bent for drawing solution from small volume tubes. [9]
Cell spreaders can be made from glass, plastic, or metal, and come in various shapes. A Drigalski spatula is a cell spreader consisting of a cylindrical rod or wire bent in the shape of a triangle with a handle. [1] [2] [3] Another variant is a rod bent in L-shape. [4] Extrusion molded versions can be T-shaped. [5]
The difference between the calibration mark of Serological pipette (top) and Mohr (bottom) A graduated pipette is a pipette with its volume, in increments, marked along the tube. It is used to accurately measure and transfer a volume of liquid from one container to another. [1] It is made from plastic or glass tubes and has a tapered tip. Along ...
Pipettes come in several designs for various purposes with differing levels of accuracy and precision, from single piece glass pipettes to more complex adjustable or electronic pipettes. Many pipette types work by creating a partial vacuum above the liquid-holding chamber and selectively releasing this vacuum to draw up and dispense liquid ...
plastic cutlery, paper napkins, etc. These products are prevalent in fast food restaurants, takeaways, but also for airline meals. In private settings, this kind of disposable products has proven very popular with consumers who prefer easy and quick cleanup after parties, etc. [1] The market for disposable tableware is huge, with an estimated ...
Graduated cylinders are generally more accurate and precise than laboratory flasks and beakers, but they should not be used to perform volumetric analysis; [3] volumetric glassware, such as a volumetric flask or volumetric pipette, should be used, as it is even more accurate and precise. Graduated cylinders are sometimes used to measure the ...
The minim came with a set of procedures for ensuring accurate measurement, specifically, diluting powerful medicines that had previously been measured by the drop, then using a "minimometer" or "minim glass" (graduated pipette) with minim marks at regular intervals. The minim was defined as one 60th of a fluid dram or one 480th of a fluid ounce ...
Disposable foodservice products made from paper, paperboard, and corrugated fiberboard include cups, plates, bowls, napkins, carryout bags, trays, egg cartons, doilies and tray liners. Some paper products are coated - mostly with plastic - or treated to improve wet strength or grease resistance. Paper and paperboard packaging like pizza trays ...
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