Used Höcker Filter System for sale (45,283)

Condition: used, Höcker Polytechnik frequency-controlled extraction system with an RSN ECO 40/12 briquetting press, designed to extract wood shavings and sanding dust from a small to medium-sized joinery or other woodworking workshop, complete with a connected hopper and briquetting press. Includes heat recovery and a number of extraction pipes with pneumatic dampers, suitable for equipping a workshop with approx. 5–10 machines. Technical data: - Fan 1: 11 kW Lodoztvwiopfx Amzjhn - Fan 2: 3 kW - Press: 4.5 kW - Filter bags: 50 - Briquette: ~ 60 x 40 mm - Filter area: ~ 54 m² - Air flow rate: ~ 3,200 m³/h

Condition: good (used), Hall extraction system, chip filter system, filter system, chip extraction, wood chip extraction, Radial fan, chip extraction fan, fan, extraction, chip blower -Manufacturer: Höcker Polytechnik, mobile filter system -Engine power: 2.2 kW -Speed: 2860 rpm -Connection input: Ø 160 mm -Base: on castors Lhodpfxewk Ea Rj Amzjn -Dimensions: 1110/810/H1700 mm -Weight: 80 kg

Condition: used, Hall extraction system, chip filter system, filter system, chip extraction, wood chip extraction, Lhedof D Azhjpfx Amzon Radial fan, chip extraction blower, fan, extraction, chip blower -Handover: in its current state as inspected, without filter element -Manufacturer: Höcker -Motor power: 1.5 kW -Speed: 2870 rpm -Inlet connection: Ø 147 mm -Outlet connection: Ø 515 mm -Base frame: on casters -Dimensions: 610/1100/H1405 mm -Weight: 68 kg

Condition: like new (used), functionality: fully functional, type of input current: DC, actuation type: electric, The Höcker Polytechnik industrial dust extraction system is designed for removing wood dust. It features a steel structure with ventilation ducts and large fans. The unit is used, in good working order, and ideal for woodworking and panel processing plants. Technical specifications: Manufacturer: Höcker Polytechnik Type: industrial dust extraction system Application: carpentry workshops, sawmills, wood processing plants Pre-separator: cyclone Filter: industrial Höcker Polytechnik filter Drive: electric motors Motor power: 2 x 15 kW Control box: YES Ducts: galvanized steel Material collection: hoppers / sawdust and dust collection system Installation: stationary, industrial installation (for an additional fee, including transport and installation at the customer's location). CONTROL BOX Condition: used, complete system Financing options are available for the machine through leasing or installment plans. The machine has been technically inspected and is ready for further operation. It is possible to start and test the unit on-site, allowing you to assess its condition and operating parameters before purchase. For customer convenience, we offer financing options in the form of leasing or installments. We assist with the necessary formalities and the selection of the most advantageous financing option. WE ORGANIZE TRANSPORT WHERE CAN YOU SEE OUR MACHINES? JBS WOODWORKING MACHINERY Ledpfx Ajz Hlb Iemzjhn WOLICA DRUGA 26 23-310 MODLIBORZYCE jbsmaszyny.pl

Condition: used, Year of construction: 2009, functionality: fully functional, input voltage: 400 V, input current: 32 A, input frequency: 50 Hz, type of input current: three-phase, suction capacity: 6,000 m³/h, intake manifold diameter: 300 mm, filter area: 28 m², total height: 2,500 mm, total length: 3,150 mm, total width: 1,030 mm, overall weight: 900 kg, Wood chip extraction system, dust extraction system, self-cleaning filter, vacuum system – Hoecker Polytechnik brand. Model: Vacumobil JT 300 – with pneumatic cleaning of filter bags using compressed air during operation. Lhodpfx Aez Nxxajmzon Year of manufacture: 2009 Fan power: 7.5 kW Capacity: 6,000 m3/h Filtration area: 28 m2 Air return Dust tank capacity: 495 liters Equipped with an automatic fire suppression system Inlet diameter: 300 mm Stock number: 1172

Condition: used, Year of construction: 1997, Design of intake nozzle: left Diameter of intake nozzle: 250 mm Nominal volumetric flow rate: 4241 m³/h Lodpfx Ao Aaq Rbemzohn Filter area: 23 m² Cleaning: vibrating motor Fire extinguishing system: water line Chip disposal: briquetting press Brikstar CS 3-12, year of manufacture 2008 Filter material: polyester needle felt Negative pressure at Vnenn: 2750 Pa Installation: stationary Motor power: 5.5 kW Sold on behalf of the owner, from the location in Darmstadt. Storage location: customer

Condition: used, Year of construction: 2005, functionality: fully functional, total width: 6,300 mm, total height: 2,100 mm, total length: 20,000 mm, working width: 2,600 mm, input voltage: 380 V, type of input current: three-phase, roll width: 2,600 mm, roller length: 7,600 mm, We offer this ready-to-use ICO SYSTEM reactive PUR hot melt press, model ICO SYSTEM, manufactured in 2005. ICO SYSTEM reactive PU hot melt press line – 2,600 × 7,000 mm For sale: complete industrial reactive PU hot melt press line for single-sided bonding of large sheet materials. This robust production line from ICO SYSTEM International Coating GmbH has been successfully used for years by TABB Interior Systems BV for the production of high-quality laminated sheet materials. The installation is in excellent technical condition, is fully operational, and can be put into production immediately. Key features: Lhsdpfjzlh Ausx Amzjn Reactive PUR hot melt bonding Maximum panel size: 2,600 × 7,000 mm Suitable for single-sided bonding Year of manufacture: approx. 2005 Fully functional and well-maintained PLC control with touchscreen Automatic vacuum portal for precise panel positioning Throughfeed system for controlled curing and constant pressing force Roller conveyors and transport tables included Suitable for: The installation is suitable for bonding a variety of flat sheet materials, including: plywood MDF HDF particleboard HPL composite panels aluminum and steel sheets various other industrial sheet materials. Production process The line is designed for an efficient and reproducible production process: positioning of the bottom sheet application of reactive PUR hot melt automatic placement of the top sheet using a vacuum portal passage through the heated press controlled curing and output of the finished product. Thanks to the automatic handling, large panels are produced quickly, accurately, and with consistent adhesive quality. Scope of supply The complete installation includes, among other things: ICO SYSTEM heated throughfeed system automatic vacuum portal with suction cups conveyor belts and roller conveyors control cabinet with PLC/HMI complete steel structure and handling. Condition The machine is fully operational, is still in use in production, and is available only due to a change in the production process. Inspection while running is possible by appointment. Interested? Please contact us for additional information, technical specifications, a demonstration, or an inspection. This high-quality industrial press line is ideally suited for companies that want to efficiently bond large sheet materials with a high-quality PUR hot melt bond.

Condition: excellent (used), Year of construction: 2018, 1 x Zumex Food Engineering juice extraction and flitration system with elevator and squeezing kits. Manufactured completely in stainless steel. Technical specification ⚙️: ✅ Manufacturer - Zumex Food Engineering ✅ Model - Z450. ✅ Date of manufacture - 2018. ✅ Hopper capacity - 40 kg.  Performance Specification ⚙️: ✅ Sizes 9-10-11: Heat unit - Kit 9, Oranges/minute - 150.35, Output capacity - 902.4 kg/h, Litres/minute - 6.01 L/min, Litres/hour - 360.84 L/hr. ✅ Sizes 5-6-7-8: Heat unit - Kit 8, Oranges/minute - 133.68, Output capacity - 1145.4 kg/h, Litres/minute - 7.64 L/min, Litres/hour - 458.22 L/hr. ✅ Sizes 2-3-4: Heat unit - Kit 7, Oranges/minute - 116.94, Output capacity - 2338.8 kg/h, Litres/minute - 15.59 L/min, Litres/hour - 935.53 L/hr. PLEASE NOTE - Estimated calculations with a 40% juice performance of the oranges. Ledpfx Aot Uircomzshn FRUIT DIAMETER: Minimum:Ø55mm, Maximum:Ø100mm NET/GROSS:  750/960KG DIMENSIONS (L x W x H):  2.5 x 1 x 2.2m CONSUMPTION:  2.010W VOLTAGE: 380 V / 50-60 Hz / 3 phase.

Condition: used, Year of construction: 2014, functionality: fully functional, power: 7.5 kW (10.20 HP), input voltage: 400 V, input frequency: 50 Hz, type of input current: three-phase, volume flow: 6,000 m³/h, overall weight: 900 kg, inlet: 300 mm, negative pressure: 2,900 Pa, rotational speed (max.): 3,000 rpm, We offer our Höcker Polytechnik Vacumobil JT300-L – Industrial Dust Extraction Unit Ledjygw Rxepfx Amzshn The Höcker Polytechnik Vacumobil JT300-L is a high-performance mobile industrial dust extraction system, designed for continuous operation in demanding woodworking and production environments. Equipped with automatic jet-cleaning (compressed air filter cleaning), this unit ensures consistent suction performance without downtime, making it ideal for workshops running multiple machines simultaneously. Key Specifications: Motor power: 7.5 kW Airflow capacity: 6,000 m³/h Working airflow: 5,100 m³/h Negative pressure: 3,100 Pa Filter surface area: 28 m² Extraction inlet: 300 mm Collection capacity: large multi-bin system 500 liters Main Advantages: Continuous operation thanks to automatic jet-cleaning system High extraction capacity – suitable for multiple machines (CNC, edge banders, planers, etc.) Industrial-grade safety features, including backflow protection and integrated fire safety options Energy-efficient motor technology (IE3 / optional IE5) Robust and reliable German engineering Applications - perfect for: Woodworking workshops CNC machining centers Furniture production Medium to large industrial operations The JT300-L offers nearly double the capacity of smaller models (e.g. JT200), making it the ideal solution for businesses looking to scale up production while maintaining a clean and safe working environment. We also sell our smaller Höcker Polytechnik Vacumobil JT200-L on Machineseeker. If you have any questions or need more information, feel free to send us a message or give us a call.

Condition: like new (used), Year of construction: 2023, Used System Year of Manufacture: 2023 Condition: Like new, very few operating hours Features and Technical Specifications: ECO JET DUO 6 XL ZRS stationary clean air filtration system for extracting wood dust and chips Fans: 2 x 7.5 kW Airflow: 10,000 m³/h Vacuum: 2,700 Pa (total) / 2,200 Pa (static) 80 filters, each 2.50 m long, BIA Category M, electrically conductive, including support baskets Ljdpfjzlbqrjx Amzehn Filter area: 77.6 m² Filter area load: 129 m³/(m² x h) Filter cleaning: AL-KO OPTI-JET® Pressure relief areas: 0.84 m² (rupture discs) Base structure with feed hopper and rotary valve; dry conveying with C-coupling ECO JET DUO 6 ZWR XL, 1,100 mm spacer ring to raise the unit, with 2 intake openings Base unit with feed hopper and ZRS 960/1 FG rotary valve for chip disposal via a customer-supplied transport fan into a silo or similar; transport line DN 200, approx. 1,260 mm, connection to be provided by the customer Rotary valve ZRS 960/1 FG: - ATEX Directive 94/9/EC; CE 0588 Ex II 1D/- (unit for indoor/outdoor use); EX D; FSA 11 ATEX 1614X - Motor: 0.18 kW / 0.78 A, 3-phase / 400 V / 50 Hz - Protection class/design: IP 54 / B3; Insulation class F - Speed: 41 rpm; Flow rate: 15,744 l/h*; 7 cells - Inlet/outlet: 960 x 250 / 960 x 208 mm - Dimensions: 1,100 x 605 x 330 mm; Temperature range: up to 50 °C Additional features: - 400 mm suction inlet with check valve in rectangular duct - ECO JET backflow check valve 910 x 346 x 500 mm AL-KO Control System ACS II: - Touchscreen display, ST 1200 controller, Sitop Power power supply, 24 V control voltage, and integrated frequency converter for cascade connection of up to 2 fans up to 37 kW with frequency converter interface - Plain-text error messages on the display, as well as a collective error message and indicator light; manual start of discharge via display button and cleaning via button; cleaning start via differential pressure; Post-cleaning; external start via potential-free contact; operating hours counter; maintenance interval indicator; control cabinet lighting and ventilation; monitoring/evaluation of fire damper, residual dust sensor, fill level sensor, and maximum filter pressure - 10 individually controlled solenoid valves - Gate valve control in groups of 4 for up to 8 machines: control via potential-free contact (PFC) or induction coil; 24 V DC shut-off valves, motor-driven with single-wire control or electropneumatic; max. 4 plates per conveyor line - ZRS power module up to 0.18 kW; time parameters adjustable via touchscreen - Rupture disc sensor and evaluation unit; pressure transmitter for frequency converter; pressure cells; strobe light; 2 x PTC thermistor evaluation; rotation monitoring of the rotary valve - 24 V DC exhaust/return air switching for summer/winter operation - Filter monitor/residual dust monitoring with evaluation unit in accordance with DIN EN 12779 and H3: If 0.3 mg/m³ is exceeded, a self-holding alarm is triggered and the recirculation damper switches to exhaust air - 10-terminal junction box, 24 V/230 V, fully wired for filter cleaning, including approx. 6 running meters of cable - Ducting system including elbows, branches, reducers, PU hoses, machine connections, small parts, and EP dampers for exhausting 11 woodworking machines 1 HRS according to specification - Return air system in accordance with TRGS 553, with changeover damper and fire damper - Galvanized base fra...

Condition: used, Year of construction: 1994, functionality: fully functional, Gravity belt filter Stainless steel construction. Designed for the separation of solids from process water, oils and emulsions using nonwoven filter media. Includes a compartmentalised main tank, metal support belts, discharge rollers, geared motors, 3 centrifugal pump units, stainless steel manifolds and piping, valves, pressure gauges, level controls, electrical control panel, platforms, stairs and handrails. Ljdpfsz R Amqsx Amzshn

Condition: used, Year of construction: 2014, functionality: fully functional, power: 4 kW (5.44 HP), input voltage: 400 V, input frequency: 50 Hz, type of input current: three-phase, volume flow: 3,400 m³/h, noise level: 71 dB, overall weight: 425 kg, extraction connection diameter: 200 mm, nominal flow rate: 3,400 m³/h, negative pressure: 2,900 Pa, rotational speed (max.): 3,000 rpm, We offer this used Höcker Polytechnik VACUMOBIL 200 mobile exhaust system, year of construction 2014. Manufacturer: Höcker Polytechnik Model: VACUMOBIL JT200-L JT = jet cleaning (compressed air filter cleaning) The JT version is an upgraded version of the VT (vibration cleaning) version. The JT200-L is ideal for continuous use (CNC, planing line, nesting) Better continuous operation Less maintenance during intensive use Type of input current: three-phase Negative pressure: 2.900 Pa Volume flow: 3.400 m³/h Lsdpsygw Iqsfx Amzehn Overall weight: 425 kg Input voltage: 400 V Suction socket: 200 mm Power: 4 kW Rotational speed (max.): 3,000 rpm Input frequency: 50 Hz We also sell our JT300-L model on Machineseeker. If you have any questions or need more information, feel free to send us a message or give us a call.

Condition: good (used), Year of construction: 1996, functionality: fully functional, Gravity belt filter Constructed in stainless steel and intended for the filtration of demineralised water. It has an approximate nominal filtration area of 7.5 m2, formed by a continuous metal belt approximately 1500 mm wide. Declared flow rate: 105 m3 per hour. Tank capacity: 10000 litres. Maximum operating temperature: 65 degrees Celsius. Nominal filling level: 80 percent. The SG Becken type tank has an empty weight of 1300 kg and has been pressure tested at 0.5 bar. Includes filter conveyor belt, compartmentalised tank, feed and discharge system, geared motor for belt movement, piping, valves, flanged connections, sensors and access structure with platforms and stairs. Ljdpfez R Airjx Amzohn

Condition: used, RSA NC-V 2000 Deburring Machine + Tube Washing System + Coral Filter Complete industrial tube processing and finishing line Lhedpezklb Ejfx Amzjn The system consists of three high-quality industrial components: 1. RSA RASAPLAN NC-V 2000 – High-performance deburring machine Function: Automatically processes workpieces up to a maximum length of 2,000 mm. 2. BOUS (CeBeCo) Rowamat RL 200 – Continuous tube washing system Function: Extremely robust and durable stainless steel welded construction. Accessories: 3. CORAL IperJet DF4 – Cartridge filter extraction system Performance: 4 horizontal high-performance filter cartridges with fully automatic jet-pulse compressed air cleaning (very low maintenance). Function: Reliably extracts brush dust, grinding residue, or fumes from the washing system. The RSA Rasaplan NC-V2000 is a fully automatic, high-performance brush deburring machine specifically designed for the simultaneous internal and external deburring of tube ends and profiles in an industrial continuous process. The number "2000" indicates the maximum workpiece length of 2000 mm, which can be automatically processed in the standard configuration. “Everything from a single source: We would be happy to offer you suitable bank financing for your project.” More new and used items can be found in our shop! International shipping costs upon request!

Condition: used, Year of construction: 2016, functionality: fully functional, machine/vehicle number: 3151, Stainless Steel Heated Filtration System for Machining Center Capacity: 28 l Max. Operating Pressure: 16 bar Max. Operating Temperature: 95°C Grundfos (Pump): Type: MTR15-14/12A-W-A-HUUV n: 2924 rpm Hz: 50 kW: 11 Lodpfxswtga Rj Amzshn Q: 17 m3/h Hmax: 169 m Grundfos (Motor): Type: MG160MB2-42FF300-H3 The Wolftechnik stainless steel filtration system, custom designed for the machining center WTBF85-F50-SS-TTV-GD-PN16, offers a high-quality solution for filtration in demanding manufacturing processes. Its heating capability ensures continuous operation even at low temperatures, preventing disruptions in production. With a high-performance Grundfos pump and a reliable motor, the system provides efficient flow control and continuous filtration.

Year of construction: 2023, condition: used, functionality: fully functional, machine/vehicle number: SN-22-1409, For sale is a high-quality extraction system from the brand Absaugwerk, year of manufacture 2023, specifically designed for the collection and filtration of welding fume (e.g. aluminum dust). The system meets the latest technical standards and includes: Equipment: • Extraction table with downward extraction • Integrated wet separator in line with the latest safety standards • Suitable for professional welding applications • ATEX-compliant (Zone 2, Ex II 3G) • Power: 4.0 kW / 400 V / 50 Hz • Condition: almost as new, fully functional Collection by buyer. Assistance with dismantling/transport can be arranged if required. If you are interested or have any questions, please feel free to send me a message. On-site inspection by appointment is possible. More metalworking machines available, such as bench drill presses, press brakes, column drill presses, eccentric presses, heavy-duty racking, welding tables, MIG/MAG welding units, compressors, etc. – please check my other listings. Domestic price net plus VAT Lsdpjx Da Tiefx Amzehn or Net export price Pick-up only – dismantling and transport by buyer or by arrangement. If you are interested or have any questions, please feel free to send me a message. More photos and technical details available on request. All information provided without guarantee or warranty. Subject to errors and prior sale. For further questions, please call. Nous parlons Francais / Мы говорим по русски We speak English / Noi vorbim româneste Viber / WhatsApp / Skype For an additional fee, we handle all customs and registration formalities. We transfer vehicles to the port for an extra charge.

Condition: excellent (used), Year of construction: 2011, Höcker Polytechnik MultiStar VT 6/3 – Baghouse Filter * Manufacturer: Höcker Polytechnik GmbH, Germany * Type: MultiStar VT 6/3 – 78/207171 * Year of manufacture: 08/2011 * Project No.: 424630 * Article No.: 118136 Ljdpfxs Aaw Rzs Amzohn * Filter area: 78.6 m² * Dust class: M * Filter cleaning: Shaking cleaning * Drive power: 0.18 kW * Voltage: 230/400 V * Frequency: 50 Hz * Certification: BG-EXAM * Country of origin: Germany For sale: Industrial baghouse filter for dust collection with mechanical filter cleaning.

Condition: ready for operation (used), Year of construction: 2019, Two Ivat filter towers for dust and smoke with temperature control and nanofilter are available. Air volume flow: 22000-25000m³/h, motor power: 18.5kW, max. separation efficiency: 99.95%, filter area: 120m², filter cartridges: 4, machine dimensions X/Y/Z: approx. 2000mm/1500mm/3000mm, weight: approx. 1200kg. Documentation available. An on-site inspection is possible. Lhodpfx Amsyvuvlszen

Condition: used, Year of construction: 1996, used good condition cleaned function tested Manufacturer: Höcker Polytechnik Type: Vacumobil EA 160 A Year of manufacture: 1996 Machine no.: 931014 GS dust tested CE type tested Clean air unit Underpressure Filter cleaning, automatic Filter cleaning, manual-motorized Connection diameter mm: 160 Motor kW: 3.0 Pressure Pa: 2580 Air flow m³/h: 1447 Weight approx. kg: 250 Storage location: 97447 Gerolzhofen, free loading, unpacked Lhjdpfx Amsz D Iuxezsn Handover in the current condition as inspected, without warranty and guarantee

Condition: ready for operation (used), Year of construction: 2016, functionality: fully functional, machine/vehicle number: FNE3J07CM027248, compressed air connection: 6 bar, overall weight: 128 kg, Wamflo Filter elements: elliptical sleeves Filter diameter: 800mm Cleaning system: compressed air Filter surface area: 7m2 Filter length: 920mm Lhodpfozgubtex Amzsn Filter material: stainless steel

Year of construction: 2011, condition: good (used), Offer 24370 Sludge filtration system in a sea container + conveyor belt Technical data: - Sludge filter press JUNGHANS with cylinder unit - Flocculation system - Pumps - Separate conveyor belt for sludge removal, length 8.0 m - Control cabinet with electrical equipment - Water collection tray made of aluminum on the entire container floor - Lighting - Sea container with 4 doors - Space requirement for the container: approx. W 6.0 x H 2.4 x D 2.4 m - Weight: approx. 5000 kg - Space requirement for the conveyor belt: approx. W 8.0 x H 0.8 x D 1.0 m Lodpfx Aet Srkpomzehn - Weight: approx. 1000 kg

Condition: ready for operation (used), Year of construction: 2014, machine/vehicle number: 457256, functionality: fully functional, power: 7.5 kW (10.20 HP), volume flow: 5,100 m³/h, Equipment: CE marking, documentation/manual, VACUMOBIL JZ300-L Anti-static material surcharge Lodps Ad I Nvsfx Amzjhn Suction nozzle, Ø220mm - PZR "Online" dust extraction surcharge, Jx300 French documentation

Condition: used, This listing is for Zeta Plus 16NZA Encapsulated Filter System The unit is in full working condition and ready for immediate use This high-performance, single-use depth filtration asset provides reliable fluid clarification and impurity removal for pharmaceutical and bioprocess laboratory operations. Lsdpfx Aezqf Dgsmzjhn Transparency Report and Technical Audit: 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: 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: excellent (used), Year of construction: 2022, Technical data: - Total filter capacity approx. 150 l/min - Filter fineness approx. 3 μm nominal Lhodezk Ek Tspfx Amzen - Dimensions (W x D x H) approx. 1400 x 1300 x 1100 mm - Tank capacity approx. 800 l Equipment: - 2 filter groups, individually backwashable, each with 1 TCF filter tower - 1 filter pump - 1 pneumatic unit - 1 manual sludge removal system with sludge bag - Internal system piping - Color RAL 7035 - 1 control cabinet, wired according to VDE standards, PLC control, operation and parameterization via touch panel 1 unit of machine supply pump for supplying the machine with filtered coolant as a submersible centrifugal pump Technical data: - Flow rate: approx. 70 l/min - Delivery pressure: approx. 5 bar - Drive: 400V, 50Hz 1 unit of cooling pump as a submersible centrifugal pump Technical data: - Flow rate: approx. 80-120 l/min - Delivery pressure: approx. 1.5 bar - Drive: 400V, 50Hz, IE3

Condition: used, Used industrial dust extraction system, complete with a Dynair 7.5 kW fan, electrical control panel, and filtration unit. No disassembly required. Available immediately. Complete system as shown in the picture. Ljdpfx Amsz Rpltozohn Located in Rotterdam, the Netherlands. Delivery: EXW Rotterdam. Worldwide inquiries are welcome. Additional information and photographs are available upon request.