Used Filter System / Dedusting for sale (42,463)

Condition: excellent (used), Year of construction: 1998, A stainless steel filter system with compressed air cleaning, in very good condition. Filter area: 50 m². Material: V4A (1.4571) 316TI Installed stainless steel radial fan, drive power: 22 kW; volume flow: 6700 m³/h; pressure: 8000 Pa Compressed air valves: ASCO 24 Volt Number of filter pockets: 48 Filter medium: no longer available Insulation: Yes With differential pressure measurement Todpfx Anjfg Ipholjb Dimensions L/W/H: 3000 mm / 1700 mm / 2100 mm (up to outlet) The filter consists of 2 modules that are divided in the middle. Also available: Stainless steel cooling screw conveyor, diameter 400 mm, length 4100 mm.

Condition: used, functionality: fully functional, Exhaust Air Dedusting System Height: 4300 mm Width: 3000 mm Depth: 1300 mm Base frame dimensions: approx. 1750 mm Tedpfoxq Epvex Anleb Upper part dimensions from flange to motor cover: approx. 2450 mm Exhaust air box on top of motor cover: approx. 400 mm The exhaust air and dedusting system is equipped with a new motor, which we newly installed in September 2025. The system has already been dismantled and is ready for pickup.

Condition: new, Year of construction: 2025, machine/vehicle number: 011/2020, STK-10000i is low-cost vacuum system from SAF TEKNIK and it offers very good filtration with a lot of power and airflow! It includes multiple filter columns and filter cleaning through vibrating. It also has a separator for bigger parts, which prevents damage to the whole system. TECH. SPECIFICATION: - Motor power: 11 KW - NEW: Frequency inverter for main motor - Exhaust capacity: 10000 m3/h - Air speed: 41 m/s - filter area: 30 m2 Tsdpfx Anef D S Treleb - bin volume: 810 Liters - exhaust inlet diameter: 355 mm - weight: 740 kg - dimensions: 3170 mm X 1200 mm X 2330 mm OTHER VERSIONS, also available: - STK-6500 (6500 m3/h) - STK-8000 (8000 m3/h)

Condition: used, axle configuration: 1 axle, first registration: 04/2013, loading space length: 10,000 mm, loading space width: 2,470 mm, loading space height: 2,700 mm, total length: 10,200 mm, total width: 2,550 mm, total height: 4,000 mm, suspension: air, tire size: 315/70R22,5, color: other, Year of construction: 2013, Equipment: ABS, = Additional Options and Accessories = - EBS = Notes = Number of axles: 1, Dual tires, Type of chassis: Complete chassis, Chassis material: Steel, Kingpin size: 2 inches, Suspension type: Full air suspension, ABS, EBS, Body construction year: 2013, Sliding roof, Axle type: BPW, CITY // NEW CURTAINS // FORKLIFT CONNECTION // KOOIAAP CONNECTION, Spare tire = Additional Information = General Information Cab: Day cab License plate: KLEYN1 Drivetrain Fuel type: Diesel Transmission Transmission: Manual transmission Todpfx Anezxn Dlsleb Axle Configuration Tire size: 315/70R22.5 Brakes: Disc brakes Suspension: Air suspension Axle 1: Dual tires; Lift axle; Steerable; Tire tread depth left inside: 13 mm; Tire tread depth left outside: 7 mm; Tire tread depth right inside: 12 mm; Tire tread depth right outside: 10 mm Functional Sliding roof: Yes Environmental Emission class: Euro 0 Condition Overall condition: Average Technical condition: Average Optical condition: Average Damage: None = Company Information = Kleyn Trucks is one of the world's largest independent dealers in used vehicles. Here you can choose from a constantly changing stock of 1200 used trucks, tractor units, and trailers. Our range includes all European brands from various years of manufacture and price ranges. Why buy from Kleyn Trucks? It's simple! • Large, rapidly changing inventory • Recognizable quality • A good price • Honest business practices • We speak many languages • We understand our customers • Assistance with import and transport • (Export) registration can be arranged quickly • Expert technical services • The security of "recognizable quality" • And more... Please visit our website for special offers and a complete inventory: Leasing through Kleyn Trucks is possible in most European countries! Quickly calculate your leasing rate and submit a request via our website. Inquire directly about our European warranty package.

Condition: excellent (used), axle configuration: 3 axles, first registration: 08/2026, loading space length: 13,700 mm, loading space width: 2,500 mm, loading space height: 2,780 mm, total length: 13,900 mm, total width: 2,550 mm, total height: 4,000 mm, suspension: air, tire size: 385/55R22,5, wheelbase: 8,790 mm, color: other, Year of construction: 2026, Equipment: ABS, tail-lift, = Additional Options and Accessories = - EBS - Tail lift = Notes = Number of axles: 3, Payload: 30950 kg, Tare weight: 8050 kg, Gross vehicle weight: 39000 kg, Type of chassis: Full chassis, Chassis material: Steel, Kingpin size: 2 inch, Suspension type: Full air suspension, ABS, EBS, Body construction year: 2026, Axle type: SAF, Tail lift, Tail lift design: under-folding tail lift, Tail lift load capacity: 2000 kg, Tail lift manufacturer: Dhollandia, Tail lift material: Steel and aluminum, Tail lift size: 240x170, Battery for ramp, TAILLIFT 2,000 KG 3x 9 TON SAF AXLES DISC BRAKES = Additional Information = Todpfjzk Un Uox Anlob General Information Cab: Day cab Registration number: OX-74-GS Drivetrain Fuel type: Diesel Transmission Gearbox: Manual gearbox Axle Configuration Tire size: 385/55R22.5 Brakes: Disc brakes Suspension: Air suspension Axle 1: Lift axle; Tire tread depth left: 14 mm; Tire tread depth right: 14 mm Axle 2: Tire tread depth left: 14 mm; Tire tread depth right: 14 mm Axle 3: Lift axle; Tire tread depth left: 14 mm; Tire tread depth right: 14 mm Weights Tare weight: 8,050 kg Payload: 30,950 kg GVW: 39,000 kg Functional Tail lift: Dhollandia, under-run ramp, 2000 kg Environmental Emission class: Euro 0 Condition Technical condition: very good Optical condition: very good Damage: none Financial Information Leasing price: €899 per month (standard, 60 months); Ask for more information and terms = Company Information = Kleyn Trucks is one of the largest independent used vehicle dealerships in the world. Here you can choose from a constantly changing stock of 1200 used trucks, tractors, and trailers. Our range includes all European brands from various years and price ranges. Why buy from Kleyn Trucks? It’s simple! • Large, rapidly changing inventory • Recognizable quality • Good price • Proper business practices • We speak many languages • We understand our customers • Support with import and transport • (Export) registration can be arranged quickly • Expert technical services • The security of "recognizable quality" • And more... Please visit our website for special offers and a complete inventory: Leasing through Kleyn Trucks is possible in most European countries! Quickly calculate your leasing rate and submit an inquiry through our website. Ask directly about our European warranty package.

Condition: used, axle configuration: 2 axles, first registration: 04/2016, suspension: air, tire size: 385/65 R22.5, color: other, Year of construction: 2016, Equipment: tail-lift, Axle configuration Tire size: 385/65 R22.5 Axle brand: BPW Brakes: Disc brakes Rear axle 1: Lift axle; tire tread depth left: 2 mm; tire tread depth right: 8 mm; suspension: air suspension Rear axle 2: tire tread depth left: 6 mm; tire tread depth right: 2 mm Weights Unladen weight: 9,350 kg Payload: 23,650 kg GVW: 33,000 kg Functional Todpfezxlkiox Anlob Tail lift: Dhollandia DHLM.30, 3000 kg Condition Damage: none

Condition: used, Year of construction: 2016, Overview This tray former and case sealer packaging module was manufactured in 2016 by Denmark SOCO SYSTEM A/S. The system consists of an automatic tray former and a case sealer designed for fully automated carton handling in packaging lines. The tray former erects flat carton blanks into trays, which are transferred via conveyor to downstream processes, while the case sealer applies self-adhesive tape to close cartons after filling. Technical data  - Capacity: 12 – 14 cycles/min (tray former) - Application: Carton forming and sealing Tsdpfoyxxxvsx Anlob - Configuration: Automatic tray former with pneumatic forming system and automatic case sealer with tape sealing - Utilities: - Voltage: 3 × 400 V - Frequency: 50 / 60 Hz (tray former), 50 Hz (case sealer) - Air consumption: approx. 31.3 Nl/cycle (tray former), approx. 0.6 Nl/cycle (case sealer) - Air pressure: 0.6 – 1.0 MPa - Rated current: 2 A (tray former), 3 A (case sealer) Scope of Delivery  - Tray former | SOCO SYSTEM A/S | BE 2200 ATS R | 2016 | Automatic tray former with pneumatic forming system and HMI control - Case sealer | SOCO SYSTEM A/S | T-402 | 2016 | Automatic tape case sealer with conveyor integration

Condition: used, Year of construction: 2012, Overview  This complete brewhouse was manufactured in 2012 and enables the production of 1,000-liter brews. The system works with steam and includes brewing, fermentation and storage tanks. It is immediately available and is currently installed and ready for operation in the production facility. The seller confirms that the system has worked perfectly until recently. The boilers have a copper coating, while the rest of the system is made of stainless steel. Details - Wort yield: 1,000 liters per brew - Heating system: Steam - Current status: Installed and ready for operation - Availability: Immediately Scope of delivery  - Brewhouse | Mini Brewery System | CI T 10 | 2012 - 2 kettles (mash tun above the whirlpool as one unit + separate boiling kettle) - Steam boiler | Mini Brewery System | - | 2012 (electric) - Plate heat exchanger - Hot water tank | 1,500 L Tedpfx Ajv Da Dlonleb - Reverse osmosis system | ALFA | compact model | - - Capacity: 150-200 L/h - 4x Isobaric fermenter | Mini Brewery System | 1,000L | 2012 - 4x Horizontal isobaric maturation tank | DuoTank | 500 L | 2018 - Cooling jacket & bag system for optimum beer preservation

Condition: good (used), axle configuration: 2 axles, permissible axle load (axle 1): 9,000 kg, permissible axle load (axle 2): 9,000 kg, first registration: 09/2017, loading space length: 135,000 mm, loading space width: 24,800 mm, loading space height: 27,000 mm, total length: 13,820 mm, total width: 2,550 mm, total height: 4,000 mm, wheelbase: 8,910 mm, color: white, Year of construction: 2017, Equipment: tail-lift, = Additional Options and Accessories = - Air suspension = Further Information = Axle Configuration Rear axle 1: Max. axle load: 9,000 kg Rear axle 2: Max. axle load: 9,000 kg Weights Unladen weight: 8,420 kg Payload: 21,580 kg GVW (Gross Vehicle Weight): 30,000 kg Tedpfx Anoy Ipw Iolsb Functional Features Tail lift: D'HOLLANDIA DHLM.30, rear door, 2,000 kg Maintenance, History, and Condition APK (Technical Inspection): valid until 08/2027 Technical condition: good Optical condition: good Identification License plate: OP-65-YR

Condition: ready for operation (used), Year of construction: 2023, functionality: fully functional, machine/vehicle number: 100, input voltage: 400 V, track width: 660 mm, type of input current: three-phase, power: 0.4 kW (0.54 HP), input frequency: 50 Hz, electrical fuse: 16 A, Product distributor with 8 outlets and cutting system for kebab strips For sale: complete stand-alone product distributor/splitter with 8 outlets, designed for the even distribution, extrusion, and cutting of kebab strips or similar meat products. The unit is sold as a stand-alone machine, complete with a support frame, pneumatic cutting system, and product conveyor belt. A vacuum filler or other dosing machine is not included. Technical specifications: Product distributor with 8 outlets Splitter model: 160/76/8/DN32 Separate eccentric impeller pump system per outlet Rotors interconnected via a central drive shaft Main housing and impellers made of stainless steel Rotors and rings made of wear-resistant technical polymer Standard product connection: DN65, length approximately 500 mm Outlets equipped with DN32 swivel couplings Outlets at an angle of approximately 30° Shape and dimensions of the extrusion outlets depend on the existing design Includes tools for disassembling the rotors Mobile stainless steel frame Tjdszqc U Njpfx Anlsb Stainless steel C-frame Suitable for positioning above a conveyor belt or packaging machine Mobile on wheels Height adjustable by approximately ±30 mm Robust and hygienic design for use in the food industry Pneumatic cutting system Cutting system for all 8 outlets Pneumatically driven cutting mechanism Mounted on the front of the outlet manifold Stainless steel cutting blade Equipped with a safety guard Includes a safety microswitch Cutting cycle can be synchronized with an external vacuum filler or dosing machine Product conveyor belt Stainless steel construction Variable belt speed Length: approximately 1,000 mm Working height: approximately 900 mm ±50 mm Width adjusted to the 8 product outlets Includes an electrical and pneumatic switch cabinet Equipped with a safety guard and safety switches Suitable for: Kebab strips Meat strips Ground meat and meat products Production across 8 uniform lanes Automatic loading onto a conveyor belt or packaging line

Condition: used, axle configuration: 2 axles, permissible axle load (axle 1): 9,000 kg, permissible axle load (axle 2): 9,000 kg, first registration: 04/2018, total length: 13,860 mm, total width: 2,550 mm, total height: 4,000 mm, wheelbase: 8,910 mm, color: white, Year of construction: 2018, Rear axle 1: Max. axle load: 9000 kg; Tyre profile left: 40%; Tyre profile right: 40% Rear axle 2: Max. axle load: 9000 kg; Steering; Tyre profile left: 70%; Tyre profile right: 70% Empty weight: 8.340 kg Carrying capacity: 21.660 kg Tsdjzxg U Nopfx Anljb GVW: 30.000 kg APK (MOT): tested until 04/2027 Registration number: OR-82-HL inside dimension 1362x248x268cm

Condition: used, axle configuration: 2 axles, first registration: 10/2021, loading space length: 13,600 mm, loading space width: 2,440 mm, loading space height: 2,670 mm, total length: 13,900 mm, total width: 2,550 mm, total height: 4,000 mm, suspension: air, tire size: 275/70R22,5, color: other, Year of construction: 2021, Equipment: ABS, tail-lift, = Additional Options and Accessories = - EBS - Tail lift = Notes = Number of axles: 2, Dual tires, Tare weight: 7480 kg, Gross vehicle weight: 35000 kg, Chassis type: Full chassis, Chassis material: Steel, Kingpin size: 2 inch, Suspension type: Full air, ABS, EBS, Body construction year: 2021, Axle type: SAF, Tail lift, Tail lift design: Rear door, Tail lift load capacity: 1500 kg, Tail lift material: Aluminum, Tail lift size: 200x254, MAKE IS KEL-BERG / TRIDEC STEERING / TAILLIFT = Additional Information = General Information Cab: Day cab License plate: KLEYN1 Drivetrain Fuel type: Diesel Transmission Transmission: Manual transmission Axle Configuration Tire size: 275/70R22.5 Brakes: Disc brakes Suspension: Air suspension Axle 1: Dual tires; Lift axle; Tire tread depth left inside: 9 mm; Tire tread depth left outside: 9 mm; Tire tread depth right inside: 7 mm; Tire tread depth right outside: 8 mm Tedpfjyz Nt Njx Anlob Axle 2: Dual tires; Steered; Tire tread depth left inside: 9 mm; Tire tread depth left outside: 12 mm; Tire tread depth right inside: 12 mm; Tire tread depth right outside: 13 mm Weights Tare weight: 7,480 kg Payload: 27,520 kg GVWR: 35,000 kg Functional Tail lift: Rear door, 1500 kg Environmental Emission class: Euro 0 Condition Overall condition: average Technical condition: average Optical condition: average Damage: none Financial Information Leasing price: €297 per month (default, 60 months); Inquire for more information and conditions = Company Information = Kleyn Trucks is one of the world's largest independent dealers in used vehicles. Here you can choose from a constantly changing stock of 1,200 used trucks, tractor units, and trailers. Our range includes all European brands from various years and price ranges. Why buy from Kleyn Trucks? Simple! • Large, rapidly changing inventory • Recognizable quality • A good price • Correct business practices • We speak many languages • We understand our customers • Support with import and transport • (Export) registration is quickly arranged • Expert technical services • The security of "recognizable quality" • And more.... Please visit our website for special offers and a complete inventory: Leasing through Kleyn Trucks is possible in most European countries! Quickly calculate your leasing rate and submit an inquiry via our website. Inquire directly about our European warranty package.

Condition: used, This listing is for Bio-Rad Trans-Blot Turbo 690BR Transfer System The unit is in full working condition and ready for immediate use The Trans-Blot Turbo is a rapid protein transfer system designed for transferring proteins from electrophoresis gels to membranes for Western blotting. It provides a compact, efficient solution for routine laboratory protein analysis Software and Media Disclosure: As a Direct-from-Lab asset, any original software media or accessories found with the unit are included as a courtesy. Licensing Notice: We do not provide, transfer, or guarantee software licenses or keys. The buyer is responsible for all software licensing, registration, and workstation compatibility via the manufacturer. Notice for Procurement: This unit is sold As-Is. While we verify the power-on status and physical integrity, we do not perform analytical validation, fluidic testing, or operational calibration. Ideal for labs with in-house technical expertise or existing service agreements. Sustainability Impact: Todpfxoztpubo Anljb By choosing Direct Reuse, your facility avoids the carbon footprint of new manufacturing and prevents specialized materials from entering waste streams. Direct-to-Lab reuse is the most carbon-efficient way to equip a modern laboratory

Condition: used, axle configuration: 3 axles, permissible axle load (axle 1): 9,000 kg, permissible axle load (axle 2): 9,000 kg, permissible axle load (axle 3): 9,000 kg, first registration: 10/2007, total length: 13,670 mm, total width: 2,550 mm, suspension: air, tire size: 385/65, tire condition: 30 %, wheelbase: 9,000 mm, color: other, Year of construction: 2007, Equipment: ABS, = Additional options and accessories = - Air Suspension - BPW Axles - Drum brakes = More information = Axle configuration Tyre size: 385/65 Make axles: BPW Brakes: drum brakes Suspension: air suspension Rear axle 1: Lift axle; Max. axle load: 9000 kg; Tyre profile: 30% Rear axle 2: Max. axle load: 9000 kg Rear axle 3: Max. axle load: 9000 kg Tjdpfx Anozvdrtjlsb Weights Empty weight: 7.920 kg Carrying capacity: 34.080 kg GVW: 42.000 kg Identification Registration number: OK-21-BL

Condition: used, power capacity / kW volt / V ampere / A total power requirement / kW weight of the machine ca. / t Tjdpfx Asy S Eb Dsnlob required space / m SYSTEM ANTRIEBSTECHNIK DSF4-14.4-20R.N3-0VD Nr. 4030276

Condition: used, power capacity / kW DSFA4-14.4-20R.N3-0VD Tedey S D I Nspfx Anlsb Part No.: 4061483 Condition: Used (fully functional)

Condition: used, power capacity / kW SYSTEM ANTRIEBSTECHNIK DSF4-1 4.4-20R.N3-0VD Todpfx Ansy S Ebkeljb Nr. 3011309

Condition: used, power capacity / kW volt / V ampere / A total power requirement / kW weight of the machine ca. / t required space / m SYSTEM ANTRIEBSTECHNIK DSF4-14.4-20R.N3-0VD Nr. 3030799 Todpfx Anozcgmzeleb

Condition: excellent (used), Conveyor belt, belt conveyor, transport belt, belt conveyor, belt conveyor, flat belt conveyor, roller conveyor, roller track, powered roller conveyor, roller track -Manufacturer: Soco, conveyor belt with roller track and pneumatic equipment -Speed: 22 m/min -Belt width: 380 mm -Conveyor length: 740 mm -Drive: 0.12 kW, see photo of nameplate -Roller width: 365 mm -Roller diameter: 48 mm -Roller spacing: 60 mm -Individual components: see photos -Dimensions: 1715/640/H930 mm Tedjzrvgnopfx Anlsb -Weight: 92 kg

Condition: excellent (used), functionality: fully functional, We are offering various used 3R systems for sale. The systems are in very good condition and fully functional. Inspection is possible by appointment. Tjdjxqn Ubopfx Anljb Pos 1 System 3R-203 Rotating element WEDM 360° Pos 2 System 3R-201J Adapter WEDM 90° Pos 3 System 3R-201J Adapter WEDM 90° Pos 4 System 3R-201J Adapter WEDM 90° Pos 5 System 3R-202 MiniBlock Pos 6 System 3R-202 MiniBlock Pos 7+8 System 3R-204 Height adjustment adapter WEDM Pos 11 System 3R-602.21 Manual chuck Macro Pos 17 System 3R-200-4J-2 470mm System 3R-200-4J-2 470mm Pos 18 System 3R-239–545 0006-V01 System 3R-239–495 Shipping and inspection are possible!

Condition: used, Accordion flexible conveyorBrand: Soco SystemWidth: 40 cmMinimum length: 155 cmMaximum possible length: 540 cmHeight: adjustable legs (70 cm in the photo) Tsdpfx Anjztf I Rjlob

Condition: used, Features: Condition: fully functional, with signs of wear Ideal for rapid material transport Professionally disassembled and packed Manufacturer: Soco System Condition: Used Model/Type: Rollers Drive type: Gravity System consisting of: 7 segments (5 x 1,980 mm, 2 x 960 mm) Total length: approx. 11,820 mm Tedpfx Aoi Dt Epenljb Total width: approx. 470 mm Conveyor width/roller width: approx. 410 mm Segment length: approx. 1,980 mm Roller diameter: approx. 50 mm/rollers made of plastic Axle spacing: approx. 90 mm (adjustable) Material: Steel/plastic Information about the frame: Height: approx. 100 mm Width: approx. 25 mm Stock quantity: 11.82 meters Price per meter Roller conveyor Thanks to the excellent workmanship of the roller conveyor, your material glides smoothly to its destination, even under high load. Tailor-made solutions for your intralogistics For roller conveyors, belt conveyors, inclined conveyors, or telescopes for loading and unloading your goods, we are your competent partner! We will gladly prepare an individual offer for you or advise you on design or assembly questions. Simply let us know your requirements and the local conditions. Benefit from our many years of experience and our excellent network of experts. We have already successfully implemented projects for companies in a wide variety of industries, such as logistics, pharmaceuticals, trades, or the electronics industry. Together, we will develop ways to optimize your processes and material flow in a cost-effective and sustainable manner. We can also offer you fully automatic sorting technology or complementary components such as picking shelves or containers.

Condition: used, Year of construction: 2019, operating hours: 500 h, functionality: fully functional, input voltage: 400 V, input frequency: 50 Hz, Shredding/chipping machine Vecoplan VHZ 1300, hammer mills CPM, fan and cyclone filter JFK. The machine is in good condition and has only been in operation for approximately 500 hours. The line is complete with all conveyors. Tsdjympx Ujpfx Anljb

Condition: used, Ampere Rack Armour® shelf support protector, size M. Condition: used, good condition Manufacturer: Ampere System Product: Rack Armour® Size: M Suitable shelf support width: 88–100 mm Height: 600 mm Outer shell material: HDPE (high-density polyethylene), wall thickness > 7 mm Inner material: Highly flexible energy-absorbing foam Weight: approx. 1.2 kg Color: signal yellow Impact absorption: frontal impact up to 2.4 t Assembly: can be done without tools (assembly aid recommended), no floor fastening required Availability: we have several in stock, please inquire about the desired quantity! Accessories such as: Floor fastening Connectors Load warning signs Impact protection Guardrails Grating Back wall grating Depth stops Barrier railings and much more... Just ask us! "Benefit from over 20 years of industry experience – we provide you with competent and personal advice as your experienced specialist dealer for new and used shelving systems." Sales & Delivery Conditions (B2B) - Prices & Logistics: All prices are net, ex warehouse. Express delivery via our own fleet is possible after individual consultation. - Offer Status: All offers are subject to change. Items are subject to prior sale. - Reservation of Ownership: The goods remain our unrestricted property until full payment (no right of disposal or processing). - Warranty: Exclusive distribution to commercial enterprises (§ 14 BGB). For used and IIa goods, liability for material defects is excluded. For new goods, the respective manufacturer's guarantees apply. Tedpfx Aozux Exenleb

Condition: used, axle configuration: 3 axles, first registration: 04/2012, suspension: air, tire size: 385/65 R22.5, color: other, Year of construction: 2012, Axle configuration Tire size: 385/65 R22.5 Axle brand: SAF Brakes: Disc brakes Suspension: Air suspension Rear axle 1: Tire tread depth left: 4 mm; Tire tread depth right: 12 mm Rear axle 2: Tire tread depth left: 12 mm; Tire tread depth right: 12 mm Rear axle 3: Tire tread depth left: 10 mm; Tire tread depth right: 9 mm Weights Unladen weight: 6,595 kg Payload: 32,405 kg GVW: 39,000 kg Condition Damage: None Tsdpfx Aozra Tlsnlob