Excellent alternative to traditional syringe filters. The Whatman™ Autovial syringeless filter is a preassembled filtration device for removing particulates from samples. It is comprised of two parts: a graduated filter barrel and a plunger. The proven design features an integral filter built-in air purge and a support stand which protects the recessed slip-luer tip. The Autovial filter is selected according to membrane compatibility with the sample. In practice the sample is poured into the (12mL or 5mL capacity) filter barrel. The plunger is inserted into the barrel until the bottom is securely in place; there is a gap of air between the sample and plunger. The tip of the autovial is placed into the mouth of an autosampler vial or container and the plunger compressed. Filtration begins immediately and as the plunger is compressed until it reaches the bottom the membrane is purged with air for maximum sample recovery. For direct instrument injection a needle is placed on the autovial slip-luer outlet. Available in both 5mL and 12mL volume sizes.
The Whatman Mini-UniPrep™ Syringeless Filters provide a faster and easier way to remove particulates from samples being prepared for High Performance Liquid Chromatography (HPLC)/ Ultra High Performance Liquid Chromatography (UHPLC) analysis. In fact, Mini-UniPrep lets you prepare samples in one third the time required by other methods. Add up the time savings, plus the money saved from cutting multiple consumables out of the sample preparation process and you'll see huge benefits for your laboratory.
Mini-UniPrep is a preassembled filtration device consisting of a 0.4 ml capacity chamber and a plunger. The plunger contains a filtration membrane at one end and a preattached cap/septum at the other. The plunger is pressed through the sample in the outer chamber and positive pressure forces the filtrate into the reservoir of the plunger. Air escapes through the vent hole until the locking ring is engaged providing an air-tight seal. Within seconds the Mini-Uniprep can be placed into any able to contain 2 ml vials for injection into your instrument.
The Mini-UniPrep filter device can be used either manually or with a compressor unit. The multi-compressor can process up to 6 samples at one time, further improving sample processing time and reducing the risk of hand stress. The Mini-UniPrep device is designed to fit into any autosampler accommodating 12 x 32 mm vials. Alternatively the septum can be pierced with a needle and the sample drawn off for manual injection into an analyzer.
Whatman UniPrep™ syringeless filter is a preassembled filtration device for the filtration and storage of laboratory samples. It features a plunger filter and vial in one unit and replaces the syringe-coupled filtration devices with single disposable units. The UniPrep™ device consists of two parts: a test tube and a filter-plunger. The design incorporates a prefilter and a membrane into the tip of the plunger. When the filter plunger is pressed through the liquid placed in the test tube positive pressure forces the filtrate up into the reservoir of the filter-plunger. UniPrep™ does not contain a septum in the cap and can be used to filter larger volumes (1 to 5mL). It is selected based on compatibility with the sample in use. In manual operation after the tip comes in contact with the liquid the filter-plunger is slowly pushed into the test tube until it stops at the bottom. It is emptied either by decanting into a sample or autosampler vial or by drawing the filtered sample into a syringe for manual injection into an instrument. Prefilter: Built-in glass microfiber membrane.
