"solar filter"

Because fumes and corrosive filter agents do not affect this aspirator, it can be used safely with bases, acids, and strong chemicals. The pump fits any standard laboratory faucet and accepts tubing up to 9.5mm ( 3/8") ID. Operates efficiently on normal water pressure above 11 psi.

This lightweight polypropylene pump provides a constant vacuum when hooked to a standard faucet; it operates efficiently with water pressures as low as 7.5 psi for minimum water consumption. It has a maximum free-air pumping capacity of 11.5 liters per minute at a water-flow rate of 6.5 liters per minute. Ultimate vacuum: 28.5" Hg. Supplied with integral check valve, 3/8" NPT connecting thread, and 4 3/4" length of tubing for insertion in discharge end.

Ideal for vacuum filtrations under both high and low water pressure.

More economical than an electric vacuum pump.

Easy-to-use hand vacuum pump without gauge.

Constant flow air sampling pump features clear external filter housing allows an immediate visual inspection of filter’s condition. The flow fault indicator lights up if unit operates outside ±5% of set flow rate. Battery test indicator lights up when battery can provide a minimum of 8 hours of operation over operating range.

Ideal choice for a wide range of laboratory aspirating applications.

Good quality, economical hand operated air/vacuum pump is easy to operate.