Filtration Membrane Discs
Thin, precut membrane rounds for high-throughput, fast filtration of liquid and gas samples. Gridded and non-gridded discs. Various materials including mixed cellulose ester, polycarbonate, PTFE, nylon, and PVDF. For air monitoring/analytical research.
Sizes
Filter membranes are made in a range of diameters, typically designed to fit a specific holder or manifold.
Materials
Filter membrane can be made from cellulose, mixed cellulose esters (MCE), polyvinylidene fluoride (PVDF), polyethersulfone (PES), polyvinyl chloride (PVC), polytetrafluoroethylene (PTFE), nylon, polycarbonate (PC), polyester, polyethylene terephthalate (PET), and polypropylene (PP). Other membrane materials include aluminum oxide, gelatin, porcelain, and glass.
Pore Size
The size of membrane pores determines which particles will be retained by the filter. A pore size of 0.2 µm is small enough to remove microbes from solutions; a 0.45 µm ore size can remove larger particulates.
Color and Grids
White membrane filters may be plain or marked with square grids (outlined in black) that can help with enumerating particles. Gridded or plain black membrane filters may be helpful when filtering light-colored particulates.
Sterility
Filter membranes may be pre-sterilized or may be sterilized using ethylene oxide, gamma irradiation, or autoclaves. The need for sterility is determined by the application, which are many and varied:
- Light microscopy samples
- Cytology sample preparation
- Electron microscopy samples
- Air quality and other environmental monitoring
- Water analysis and water quality testing
- Microbiology colony counting and quality control
- Chemotaxis
- Sterile preparation of buffers, tissue culture media, microbiological media, and other biological fluids
SCP Science DigiFILTER 1.0 Micron, 98% Particle Retention, Vacuum-Assisted Filtration, 100/PK
The DigiFILTER 1.0 micron is designed for efficient filtration of wastewater, soil, and other challenging samples, enhancing laboratory productivity by preventing clogging and ensuring sample integrity for trace metal analysis. Its hydrophilic Teflon membrane guarantees 98% particle retention, making it ideal for high-throughput processing. This vacuum-assisted assembly is compatible with 50 mL tubes, providing a reliable solution for clean sample preparation in analytical applications.
Shockwatch Div Mri MaxiLog Alert -80C Single Use
A single-use, pre-programmed electronic temperature data recorder for measuring and documenting temperatures of dry ice shipments including vaccines, biological material, chemicals, pharmaceuticals, and other temperature sensitive products.•-80°C to 30°C / -113°F to 86°F•8K Memory (approx. 8,000 data points)•1-year operating life•8.8 cm x 3.49 cm x 1.58 cm / 3.5” x 1.38” x 0.62”•3 oz / 65g•±0.5°C at 0 to 10°C / ±0.9°C at extremes •±0.9°F at 32° to 50° F / ±3.6°F at extremes•0.1°C temperature resolution•1 year warranty•ER2045T Lithium coin cell •10 per box
Tisch Scientific NYLON MEMBRANE FILTERS
Tisch nylon membrane filters are naturally hydrophilic, have high non-specific binding properties, and an extractable level of <0.0015 mg/cm^2, they are ideal for HPLC solvent and sample preparation.
Hach Company Filter, Membrane, Pore Size 0.45 µm, Diameter 25 mm, 100/pk
For use in a wide-range of laboratory applications, these discs are composed of Mixed-Cellulose Esters and are the industry standard for particulate removal, particulate analysis and clarification of fluids. Diameter: 25mm. Pore Size: 0.45um. 100/PK.
Alkali Scientific CellPro™ DEPC Treated Ultra Pure Water, 1.0 Liter x 12 Bottles/cs
DEPC Treated Water (and therefore RNase-free) water is used in handling of RNA in the laboratory to reduce the risk of RNA being degraded by RNases. Water is usually treated with 0.1% v/v DEPC for at least 2 hours at 37 °C and then autoclaved (at least 15 min) to inactivate traces of DEPC. Inactivation of DEPC in this manner yields CO 2 and ethanol.