US 12,287,316 B2
Water sampling immersion probe
Manfred Battefeld, Dusseldorf (DE); Frank Steinhauer, Berlin (DE); Aurelia Stellmach-Hanulok, Wülfrath (DE); Nina Aleth, Krefeld (DE); Silke Brubaker, Mettmann (DE); Axel Leyer, Mönchengladbach (DE); Hartmut Dräger, Berlin (DE); Sebastian Goertz, Nettetal (DE); Michael Kussmann, Düsseldorf (DE); and Michael Küppers, Kaarst (DE)
Assigned to HACH LANGE GMBH, Berlin (DE)
Appl. No. 17/632,061
Filed by HACH LANGE GMBH, Berlin (DE)
PCT Filed Aug. 1, 2019, PCT No. PCT/EP2019/070815
§ 371(c)(1), (2) Date Feb. 1, 2022,
PCT Pub. No. WO2021/018404, PCT Pub. Date Feb. 4, 2021.
Prior Publication US 2022/0268755 A1, Aug. 25, 2022
Int. Cl. G01N 33/18 (2006.01); B01D 63/06 (2006.01); B01D 63/08 (2006.01); B01D 69/02 (2006.01); B01D 69/04 (2006.01); B01D 69/06 (2006.01); C02F 1/44 (2023.01); G01N 1/10 (2006.01); G01N 1/14 (2006.01)
CPC G01N 33/1886 (2013.01) [B01D 63/06 (2013.01); B01D 63/082 (2013.01); B01D 69/02 (2013.01); B01D 69/04 (2013.01); B01D 69/06 (2013.01); C02F 1/44 (2013.01); G01N 1/14 (2013.01); B01D 2313/16 (2013.01); B01D 2313/23 (2013.01); B01D 2313/243 (2013.01); B01D 2319/02 (2013.01); B01D 2325/02 (2013.01); G01N 2001/1043 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A water sampling immersion probe for continuously filtering a water sample from wastewater, the water sampling immersion probe comprising:
a distal coarse filter comprising a porosity of 0.1 to 1.0 mm;
a proximal fine filter arranged downstream of the distal coarse filter, the proximal fine filter comprising a porosity of less than 50 μm, the distal coarse filter and the proximal fine filter being arranged so as to not contact each other, wherein the distal coarse filter and the proximal fine filter define a venting chamber, wherein the venting chamber is vented at a bottom and the venting chamber is inclined with respect to vertical with an inclination angle between 5° and 80° degrees and completely submerged so that rising air bubbles remain in contact with a distal side of a membrane of the proximal fine filter over the entire height of the membrane; and
a sample suction opening arranged downstream of the proximal fine filter.