No Need For Oil: Many other pumps need their oil changed after just 12 hours of use. Our vacuum pump uses powerful 0.075Mpa oil-free small diaphragm pump, Does not need regular maintenance. The pump can pull a vacuum strong enough for most laboratory or industrial jobs. Oil-Free Exhaust Port: Unique leather film design reduces wear and tear and increases service life. Provides a clean vacuum environment, does not pollate the system - a risk on many pumps. Improve Experiment Efficiency: This laboratory diaphragm vacuum pump is used in laboratories, including food, drug, beverage and drinking water industry testing, suspended solids determination, and sample pretreatment microanalysis or solvent passivation. Safe Use: Vacuum pressure gauge, simple operation, stable performance, high measurement precision and fast response. Overcharge protection, overheating protection, short circuit protection, use of more security. As Quiet As A Library: The innovative laboratory vacuum filtration pump operates at just 40 decibels, the sound level in a library.