Vacuum filtration is a routine laboratory test in which the solids and liquids in a water sample are separated by a filter bottle, a vacuum pump, and a filter paper. Traditional filtration products include sand core filter bottles, Buchner funnels, stainless steel funnels, and the like. In the process of use, the sand chip of the sand core filter bottle is not easy to clean after being stained with stains, and the glass material is not resistant to falling; the part of the Buchner funnel that can be drained is limited to the small hole of the dense cloth, which seems to have a large funnel diameter, but is effectively filtered. The area is small; the stainless steel funnel has poor corrosion resistance and heavy weight.
In order to make up for some defects of the traditional filter equipment, it is easier to use and durable. This year's new R300P vacuum suction filter device uses a new engineering plastic material, the mold-molded polyether sulfone to make the suction filter bottle, with the best-selling dozens The classic R300 oil-free vacuum pumping pump of the year. The pumping filter bottle made of engineering plastic material has excellent impact resistance and is more resistant to falling. Since the plastic material is integrally molded by mould, its internal structure can be more complicated and more functional than glass, ceramic and stainless steel. The quick diversion design improves the filtration speed, the anti-waste diversion check valve, the automatic liquid inlet cover, etc., and is more convenient to use; the rotary card type structure formed by the mold is integrated, and the clamp between the filter cup and the base is no longer needed. Fixtures are fixed by clamps; filter bowls and suction bottles are equipped with tick marks, and are integrally molded for the mold, non-screen printing, and never fade.
The plastic material suction filter device with the above characteristics is more suitable for the following purposes:
1. Sampling and filtering of surface water in the wild: Because it needs to be carried out, light and resistant to falling is the basic requirement for the suction filter bottle. Too heavy to carry, increase transportation costs; while the Buchner funnel of glass and ceramic materials is not resistant to falling, it may be damaged during transportation, which affects normal sampling and filtration. Therefore, it is very suitable to carry out the R300P-DC model with a plastic filter bottle.
2. Suspended solids inspection and filtration: generally water samples, not corrosive, using plastic filter bottles to fully meet the needs.
3. Microbial limit inspection and filtration: The plastic filter bottle can be sterilized by high temperature and high pressure. The light and compact design makes it easier to carry out the package before sterilization and remove it after sterilization.
Users should still have more specific needs to select the appropriate suction filtration products in the filtration laboratory.
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