Stockwell Scientific

Photo of Screw Cap Poly Centrifuge Tubes
These premium quality general purpose centrifuge tubes are available with molded-in graduations, or for exceptional reading ease, printed graduations. Large writing area on printed tubes makes identification simple. Molded in seal-ring ensures a leakproof seal without the contamination problems associated with cap liners. 15 mL tubes are available in polystyrene or polypropylene. Polystyrene offers glass-like clarity and can withstand 1800 RCF. Polypropylene has excellent chemical resistance and can withstand 6400 RCF.
Photo of Filtered Pipet Tips. ALADN
These pipet tips feature an inert hydrophobic porous polyethylene filter to minimize cross contamination from the pipettor. The tips are presterilized. Ideal for applications that are sensitive to trace or cross contamination.
Photo of Specific Fit Pipet Tips. ALADN
These tips are engineered to fit specific brand pipettors. Made from natural color polypropylene unless noted otherwise. Packaged in bulk or stack rack. Non-sterile.
Photo of Polystyrene Spectrophotometer Cells. ALADN
These Macro (10mm path) and Semi-Micro (4mm path) cuvettes are specially packaged to reach you scratch- free. Cuvettes are 45mm high. Manufactured from optically clear polystyrene formulated for superior clarity and transmission. Fits most spectrophotometers including Beckman, Perkin-Elmer, Gilford, Hitachi, Varian and Shimadzu. Each cuvette is packed in its own individual compartment in dust resistant trays to assure scratch-free optical surfaces. Polyethylene caps with flexible double seals are also available.
Photo of Polypropylene Microcentrifuge Tubes
Precision molded polypropylene microcentrifuge tubes have flat tops for writing on, graduations and a writing area on the side of the tube. All tubes tolerate centrifugal forces of up to 18,000 RCF.
Photo of Screw Cap Graduated Microcentrifuge Tubes
Premium quality polypropylene screw thread microcentrifuge tubes with graduations. Purchase caps separately. These tubes are easy to read and have superior clarity and durability. Internal seal-ring (nitrile) ensures a leakproof seal without the contamination problems associated with cap liners. Continuous threads require only a 1¼ turn to tighten. Caps are compatible with Sarstedt and Porex.
Photo of Test Tube Caps. ALADN
Thumb Caps fit 12mm plastic test tubes. Protects samples from accidental spillage, evaporation and contamination. Flange Caps fit 12mm and 13mm test tubes, round cuvettes, and centrifuge tubes. Flange Caps have two flexible flanges to assure a leakproof seal. Hollow Bottom Plug Caps fit 16mm test tubes. Hollow Top Plug Caps fit 12mm, 13mm, 16mm, and 17mm test tubes. All caps are made of LDPE. Caps listed here are white in color. Other colors are available upon request.
Photo of Sterile Disposable Poly Culture Tubes. ALADN
These sterile tubes come with 2-position caps for aerobic or anaerobic closing, and are precision-molded from premium grade polystyrene or polypropylene.
Photo of Disposable Poly Culture Tubes. ALADN
Precision-molded from premium grade polystyrene or polypropylene, these general purpose tubes are ideal for a wide range of applications. Prevents the breakage problems associated with glass test tubes. Polypropylene (PP) tubes are tough, autoclavable and chemically resistant, while polystyrene (PS) tubes offer glass-like clarity.
Photo of 12mL Plug Cap Transport Vials. ALADN
Transport tubes are ideal for rapid sample collection when a plug cap is needed. Made of virgin polypropylene or polystyrene. Also works well in Olympus automated testing equipment. Plug caps are white. Purchase caps separately.
Photo of Transport Vials. ALADN
Transport vials are ideal for sample collection, storage, and safety. Made from virgin polypropylene, they are available in three sizes as well as sterile or non-sterile. Graduations provide accurate references. Write-on area on side. Supplied with a screw cap that has a molded-in sealing ring for a leakproof fit.
Photo of Universal Graduated Pipet Tips. ALADN
The 1-200µL tips are graduated at 10, 20, 50, 100, and 200 µl. Beveled tip for precise and accurate sample discharge. Exceptional clarity provides easy sample identification. The 100-1000µL tips are graduated at 100, 250, 500, 750, and 1000 µl. Packaged in bulk, stack rack, autoclavable rack, and rack inserts.