Used Clarifier - Centrifuge for sale (1,064)

Condition: repair required (used), Year of construction: 2017, functionality: not functional, AS-07251-Alfa Laval Clarifier Module 10 m3/h ALFA-LAVAL PURE SOX (SWPX 810 SGV-34CGL) CLARIFIER MODULE, 316SS. Capacity min. 10,000 L/H Offering 4 identical units Godpfxew Ap I Ao Aqgouh INCOMPLETE! Only for spare parts (Machine without bowl) Max. bowl speed 7200 RPM, rated at 10,000 LPH, bowl volume 15 L, sludge capacity 9.4 L, liquid discharged under pressure, solids discharge pump with cyclone tank, 35 kW motor 460/3/60/1728 RPM, Pure SOx scrubber, unitized on a common skid with all valves, piping, control panel, tools, spares, and manual Year of Manufacture 2017

Condition: like new (used), Year of construction: 2019, functionality: fully functional, overall weight: 2,500 kg, rotational speed (min.): 4,500 rpm, screw diameter: 305 mm, year of last overhaul: 2026, temperature: 80 °C, empty load weight: 2,500 kg, power: 22 kW (29.91 HP), Equipment: documentation/manual, rotational speed infinitely variable, Complete Technical Data (GEA OCE 305-01-32)Technical ParameterSpecification and ValuesManufacturer & ModelGEA Westfalia Separator Group GmbH – OCE 305 SeriesEquipment TypeHigh-performance 2-phase decanter centrifuge (Solid-Liquid)Bowl Inner Diameter305 mmBowl DesignFlat-cone design with an extended length (Extended L/D ratio)Maximum Hydraulic CapacityUp to 5 m³/h (varies depending on solid concentration)Maximum Solids Density 2.6 kg/dm³Drive Type2-Gear Drive (System with 2 independent motors, no magnetic brake)Differential Speed ControlAutomatic via dedicated Variable Frequency Drives (VFD)Overall DimensionsLength: 3000 mm | Width: 1000 mm | Height: 1150 mmTotal Weight (Complete Skid)Approx. 2500 kgLubrication SystemAutomatic centralized grease lubrication for main bearingsConstruction MaterialsHigh-grade duplex stainless steel (all product-contact areas)Scroll Wear ProtectionSintered tungsten carbide tiles welded onto the flight edgesII. Liquid Discharge Under Pressure SystemUnlike standard models with gravity discharge (where the liquid falls freely into acollection tank), your model retains the clarified liquid phase inside a hydro-hermetic tripetal Pump (Paring Disk): The separated liquid flows toward the cylindrical end of the bowl, entering a special chamber where a stationary disk with spiral internal channels (a reverse turbine) is etic-to-Pressure Energy Conversion: The kinetic energy of the rapidly rotating liquid is instantly transformed into hydrostatic pressure when it hits the channels of the stationary cess Advantages: The liquid leaves the decanter directly under pressure (without requiring an external transfer pump). This prevents product foaming (highly critical for oils, chemical products, or food-grade applications) and eliminates contact with atmospheric oxygen Gusdpfx Aozgq Szoqgjh Electrical cabinet with frequency inverters ant PLC (Siemens ) with acces code for modify the parameters , including factory documentation

Condition: like new (used), maximum load weight: 96 kg, load capacity: 77 kg, Reconditioned ATEX centrifuge, model SCA-700. Gsdpfjrrwclsx Aqgeuh

Condition: used, Used Westfalia model CSA1-06-475 stainless steel clarifier centrifuge. Self cleaning bowl in steam sterilizable design. Internal pressure rated 1.5 bar pressure at 127 deg.c. Capacity rated approximately 13 litre. Unit includes 1.5kw, 1415rpm drive. All mounted on skid. Includes tools Gujdpfozvyi Uex Aqgoh

Condition: used, Used GEA Westfalia model FSD 1-06-107 stainless steel disc bowl centrifuge. Clarifier design with total capacity 1 litre and solids holding space 0.5 litre. Heavy liquid 1.0 kg/dm3 and solids 1.4 kg/dm3 solids. Maximum speed rated 10,000rpm. Centripetal pump output up to 300 l/h depending on medium. Belt driven by 1.1 kW 220/380 volt 3/50 3,000 rpm motor. Mounted on skid with HMI control panel and stainless steel collection pot. New 2018. Gedpfxjzimv Uj Aqgjuh

Year of construction: 2012, condition: ready for operation (used), Centrifuge / CEPA GZ 500 - Carl Padberg Guodpoz R Uvfofx Aqgjh - CE marking - Year of manufacture: 2012 - Motor speed: 1400 rpm - Batch weight: 50 kg - Drum speed: 1400 rpm - Drum diameter: 542 mm - Drive power: &KW - Centrifuge & Separate control cabinet - Documentation Dimensions: L x W x H incl. control panel: 1.6 x 1.1 x 1.5 meters / Weight: 490 kg Errors and omissions excepted.

Year of construction: 2015, operating hours: 6,000 h, condition: like new (used), functionality: fully functional, machine/vehicle number: 1448380811, Set including: Centrifuge Hydraulic unit 2 feed pumps 1 flocculant pump Guedpfxjz Icw Ao Aqgjh 1 flocculant preparation tank 1 electrical control panel

Year of construction: 2022, condition: ready for operation (used), functionality: fully functional, machine/vehicle number: 1011/33, High-quality pharmaceutical laboratory centrifuge HEINKEL V 500 TP – Complete system including control system and accessories NEW PRICE: €330,000 For sale is a professional, vertical pilot plant centrifuge of the type HEINKEL V 500 TP in excellent, like-new condition. The system is specifically designed for feasibility studies, product development, and small-scale production in the pharmaceutical and fine chemical industries and meets the highest cGMP standards. This is a complete system ready for immediate use, including the original control cabinet and the integrated operating unit (HMI). Thanks to the mobile stainless steel frame (“Plug and Use”), the system can be moved flexibly within the room or integrated into existing processes. Technical data & highlights: Manufacturer: HEINKEL Drying and Separation Group Model: V 500 TP (Vertical Centrifuge) Year of manufacture: 2021 / 2022 Drum diameter: 500 mm Nominal volume / filling weight: 30 liters / approx. 36–38 kg Material: High-quality stainless steel (product-contact parts with high surface quality, Ra < 0.8 µm) [If applicable, add "Alloy C22 / Hastelloy" here] Approval: CE marking available Documentation: Complete technical documentation Gsdpfx Aoz Euz Ieqgeuh Scope of delivery: HEINKEL V 500 TP centrifuge on a mobile stainless steel frame Original, free-standing control cabinet (including cooling unit) Integrated control panel (touch-HMI) directly on the machine Original HEINKEL accessories and tool case

Condition: used, This listing is for the Sigma 2-15 Centrifuge +Accessories Shown The unit is in full working condition and is ready for immediate use The Sigma 2‑15 is a benchtop (tabletop) laboratory centrifuge produced by Sigma (Sigma Laborzentrifugen GmbH), designed for moderate-speed separation tasks across various scientific and industrial settings Key Features & Specifications: Purpose: Used to separate sample components (e.g., cells, sediments) through centrifugal force—ideal when high speed isn't required Power & Voltage: Operates at 240 W, 220–240 V, 50 Hz Speed: Centrifuge motor: up to 13,500 rpm. Gsdpjxhffrofx Aqgeuh Rotor-specific max: up to 15,300 rpm, depending on rotor type . Capacity: Typical configuration includes 4 buckets, each capable of holding up to 100 ml (e.g., rotor 11192 with buckets 13012) Some versions deploy a fixed-angle rotor (e.g., 12189) with capacity around 480 g Dimensions: Compact footprint of approximately 33 × 43 × 30 cm (W × D × H) . Other Features: Microcontroller-based control of speed and time. Multiple acceleration/deceleration curves and program memory (up to 10 programs) in some configurations Magnetic rotor identification (prevents overspeeding) and induction drive for low maintenance

Condition: ready for operation (used), Year of construction: 1998, Ernst Schnabel - ALFA Centrifuge, Model -CE marking -Year of manufacture: 1998 -Drum volume: 27 liters -Drum diameter: 400 mm -Rotation direction: Clockwise -Permissible load: 25 kg Gedjy Uv Rhopfx Aqgsuh Dimensions: L x H 0.7 x 1 meter / Weight: approx. 150 kg Errors and omissions excepted.

Condition: used, This listing is for a Thermo Fisher Scientific Sorvall RC6+ Centrifuge The unit is in full working condition and is ready for immediate release. The Sorvall RC 6 Plus is a high-speed, refrigerated floor-standing centrifuge designed for large-volume separations in research, bioprocessing or production labs. According to the manufacturer, it: Is capable of speeds up to 22,000 rpm (which corresponds to about 55,200 ×g) without needing a vacuum system. Handles up to 4 × 1,000 mL bottles in a single run (i.e., ~4 L total) in its standard configuration. Uses a brushless high-frequency motor drive, and has full refrigeration for temperature control. Offers a broad rotor compatibility platform (including composite, aluminium, continuous flow etc) for different In short: this is a heavy-duty centrifuge for larger volumes and higher speeds, suited to labs that need more capacity and performance than benchtop or mid-range units. Key Features & Highlights Here are some of the standout features: Speed & G-force: Up to 22,000 rpm, approx. 55,200 ×g. Capacity: 4 bottles of 1,000 mL (4 L total) in typical configuration. Temperature control: Ability to set in range from -20 °C to +40 °C (in 1 °C increments), and maintain temperature accuracy of ±2 °C. Motor/drive: Brushless high-frequency motor = faster spin up/downs, lower maintenance than older belt drives. Programmability & control: Up to 30 stored programs, with features like real-time control (delayed start/stop), ω² dt (integrator) for reproducibility, pre-cool function, and both rpm and RCF display. Gedpfx Aqsxukkyjgeuh Safety & interlocks: Automatic lid-lock when running, door cannot be opened while rotor is spinning, and run terminates automatically in the event of certain malfunctions. Rotor flexibility: Supports a wide selection of rotors (fixed-angle, swinging bottle/bucket, continuous flow), including composite carbon-fibre rotors for higher performance / durability

Year of construction: 2023, condition: used, functionality: fully functional, Hosokawa Alpine hammer mill Type UPZ 500 Year of construction: 2023 Weight: 1300 kg Capacity/max: 5,910 l/min Dimensions: approx. 230x110x129 cm Documentation available This lot is located in room 3 Hosokawa Alpine centrifugal fan with electric motor on a steel base frame. Details: Brand: Hosokawa Alpine Type: centrifugal fan Drive: electric motor Design: housing with protective cover and connection/piping Frame: steel base frame Color: gray with blue motor Condition: used Guedpfxez Iam Io Aqgsh

Year of construction: 2012, condition: used, functionality: fully functional, PERMOLEX-POLAR K 81 H – a complete process line for de-oiling and separating metal chips. For sale is a complete industrial system for de-oiling, oil removal, and separation of aluminum and steel chips. Guedez Hw R Uopfx Aqgsh Type: Permolex-Polar K 81 H Year of manufacture: 2012 Application: de-oiling and separation of loose aluminum and steel chips Capacity: max. approx. 3.4–6 m³/h Throughput: approx. 160 tons of chips per month Control: Siemens SIMATIC S7-300 / operator panel TP177B Rotational speed: 980 rpm Power supply: 400 V / 50 Hz Offered for sale is a complete set of equipment forming an industrial system for centrifuging liquids from chips and further separating aluminum and steel chips. The process includes: chip feeding → buffer tank → conveyor → PERMOLEX-POLAR centrifuge → oil/coolant discharge → magnetic separation → chip separation → transport to containers. Chip transfer points are enclosed, which reduces the lifting of material during transport. The system includes: • PERMOLEX-POLAR K 81 H chip centrifuge, • approx. 7.5 m³ buffer tank for chips, • 3 x KF 600 scraper conveyor, • double separating shaft with neodymium magnets, • vibratory conveyor, • approx. 250 l oil/coolant tank, • submersible pumps, • floor trays, • complete Rittal control cabinet, • Siemens S7-300 controller, • TP177B operator panel, • supporting structures and system components. Application The system is designed for the continuous processing of a mixture of aluminum and steel chips. The process includes: chip feeding → de-oiling/oil removal → separation of steel fraction → transport of separated chips to tanks/containers. The system is designed for handling large quantities of material and features automatic control and level monitoring. Technical condition Used equipment from an industrial installation. The photos show signs of normal operation, dirt, and surface wear on the components. It is recommended to inspect and verify the completeness and technical condition of individual components before purchase. Sold as a complete system or individually, as agreed. Due to its size and complex structure, dismantling, loading, and transport require prior agreement. Technical/design documentation regarding the equipment layout can be provided to interested buyers. 📞 Contact Interested parties are invited to contact us for pricing, additional photos, technical documentation, and to arrange an inspection.

Condition: refurbished (used), Year of construction: 1973, functionality: fully functional, rotational speed (min.): 4,800 rpm, Separator WESTFALIA type SB60-06-076 for beer, fruit juices, wine, vegetable juices, tea, coffee, for citrus and tropical fruits for pectin capacity: 300-13.000l per hour with 4,800 rpm Dimensions and weight: Height: 2500 mm Length: 2000 mm Width: 1800 mm Weight: 2350 kg Technical Data: Manufacturer: Westfalia Type: SB60-06-076 Year of construction: 1973 Serial number: 1668 021 Gjdetqf Dbspfx Aqgsuh Ø dl. 568 mm Drum speed: 4800 rpm Permissible density of the centrifuged material: Heavy liquid: 1.0 kg/ dm3 Solids: 1.45 kg/ dm Test books, tools, drawings available!

Year of construction: 2014, condition: ready for operation (used), machine/vehicle number: 5125781, Alfa Laval ALDEC 45 Decanter Centrifuge – For Sale Alfa Laval ALDEC 45 industrial decanter centrifuge in very good working condition. The machine has been well maintained and is suitable for continuous solid-liquid separation applications. Key Specifications: Manufacturer: Alfa Laval Model: ALDEC 45 Year: 2014 Machine / Serial No.: 5125781 Maximum Bowl Speed: 4,200 rpm Godpfxjzu S Uye Aqgsuh Main Motor: Approx. 22 kW Back Drive Motor: Approx. 5.5 kW Bowl Diameter: Approx. 360 mm Processing Capacity: Approx. 3–15 m³/h, depending on feed characteristics and separation requirements Continuous industrial operation Heavy-duty stainless steel construction Location: Türkiye Condition: Very good, ready for operation Suitable for various industrial separation applications, including wastewater treatment, sludge dewatering, chemical processing, food processing and other solid-liquid separation processes. The machine is available for inspection. Additional photos, technical details and videos can be provided upon request.

Condition: like new (used), Year of construction: 2016, volume flow: 5 m³/h, overall weight: 4,900 kg, energy consumption: 35 kWh, peeling centrifuge 3000 rpm , 630 mm diameter bowl Godpfxsvm Ur Aj Aqgouh

Year of construction: 2016, condition: used, Name: Used Centrifugal Fan Manufacturer: REITZ Type: KXE 050-035530-00 Year built: 2016 Speed: 2.960 / 2.809, max.: 3138 rpm Driving force: 45 kW Throughput m³/h: V= 355 m3/min Material: regular steel Dimensions: L 2.300 x W 1.200 x H 1.420 mm Empty weight: Approx. 900 kg Technical doc.: yes, in German language Message: Intake temperature 20° and max. temperature 80°. Is unused, therefore as good as new! Accessories: Legs Condition: Used Godpfx Asz Innajqgjuh Price: On request

Condition: ready for operation (used), Chip – Centrifuge STEIMEL POLAR / S 5 - Drum diameter (basket) 500 mm - Speed / power: 1000 rpm, adjustable up to a maximum of 1400 rpm - Includes documentation & electrical diagram Gusdpfxjzylzqs Aqgoh Dimensions L x W x H: 0.7 x 0.7 x 1.2 meters / Weight approx. 250 kg Errors and omissions excepted.

Condition: used, RETSCH Ultra Centrifugal Mill / Laboratory Mill / Fine Grinding RETSCH ZM 200 Ultra Centrifugal Mill incl. DR 100 dosing unit and extensive accessories For sale is a used ultra centrifugal mill from the manufacturer RETSCH, including a DR 100 dosing unit and extensive accessories as shown in the pictures. The ZM 200 is suitable for rapid fine grinding of various materials and for use in laboratories, research, development, and quality control. Technical data ZM 200: Manufacturer: RETSCH GmbH Type: ZM 200 Equipment type: Ultra Centrifugal Mill Power connection: 1~ 200–240 V Frequency: 50/60 Hz Power according to nameplate: 1100 W Current consumption: 12 A Dimensions (L × W × H): approx. 515 × 410 × 365 mm CE marking Dosing unit: RETSCH DR 100 Dosing unit for controlled material feed with adjustable dosing speed Interfaces ZM 200: Connection for DR 100 RS232 RS485 Guedpfx Aqszxqhyogjh Equipment: RETSCH ZM 200 Ultra Centrifugal Mill RETSCH DR 100 dosing unit Digital control and display panel Feeding hopper Collection container Rotor / grinding tool as shown in the pictures Numerous ring sieves / sieve inserts in various designs Several hoppers and stainless steel parts Further extensive original RETSCH accessories as shown in the pictures Application areas: Laboratory and research Fine grinding Sample preparation Material testing Quality control Research and development Scope of delivery: 1 × RETSCH ZM 200 Ultra Centrifugal Mill 1 × RETSCH DR 100 dosing unit 1 × Operating manual ZM 200 1 × Operating manual DR 100 Feeding hopper Collection container Rotor / grinding tool as shown in the pictures Numerous ring sieves / sieve inserts Various hoppers, containers and accessories Further accessories as shown in the pictures Weight approx. 45 kg Condition: Used Signs of wear The table shown in the photos and other items not explicitly mentioned are not included in the sale. Shipping or freight forwarding possible. Subject to change, errors and prior sale. We are happy to answer further questions by telephone.

Condition: good (used), Year of construction: 2005, Collomix Rota 30 Paint Mixer The Collomix Rota 30 is a high-performance biaxial mixer specifically designed for the fast and efficient mixing of paints, varnishes, and plasters in closed containers. It features a biaxial mixing process in which the container rotates simultaneously around two axes, enabling mixing times of less than 90 seconds, even with heavy materials. Features and Ergonomics Automatic clamping: After insertion, the mixing container is automatically fixed and centered. Safety features: Integrated safety door lock and an emergency stop button; the door only opens after the mixing unit has come to a standstill. Handling: Equipped with extendable rollers and height-adjustable machine feet for easy positioning. Durability: An integrated "splash guard" mechanism protects the drive components from contamination by leaking paints. Application areas The device is primarily used in the paint wholesale and retail trade, as well as in the chemical industry. It is often used as a system component in paint dispensing systems to mix color pigments into base paints without clumping. Collomix Rota 30 Paint Mixer Guedpfx Aqsy Nxh Eogoh For mixing: Paints Paint granules Facade paints Industrial paints Plasters Other low-viscosity materials Max. mixing weight: 35 kg Recommended continuous mixing weight: 30 kg Max. container height: 60-400 mm Year of manufacture: 2005 More paint mixers in other sizes - new and used - can be found in our shop! International shipping costs available upon request!

Condition: good (used), Year of construction: 2009, Equipment: documentation/manual, Name: Decanter centrifuge Manufacturer: Flottweg Type: Z4E-4/454 Year built: 2009 Driving force: 30 kW worm drive (backdrive): approx. 7.5 kW Permissible sediment density: 1,6 g/dm³ Max. bowl speed: 4.200 U/min Inner diameter drum: 420 / 240 mm Godpfxjz Ingco Aqgjuh Drive speed: Flottweg SIMP-DRIVE drive system (frequency converter-controlled) Material: Stainless steel 1.4463 Max. operating temperature: 0 - 100 °C Dimensions: (L x W x H): approx. 3.500 x 1.000 x 1.200 mm Empty weight: Approx. 3.000 kg Technical doc.: Yes Message: Screw wear protection: Tungsten carbide / chilled cast iron Accessories: Control cabinet Condition: Used-good Price: By request

Year of construction: 2020, condition: used, functionality: fully functional, machine/vehicle number: 376292, The Reitz KXE 250-050030-00 is an industrial centrifugal fan designed to generate a high total pressure increase in process installations. The assembly consists of a volute fan casing, an impeller mounted on a separately supported shaft, a coupled electric motor, and a common steel base frame with vibration-isolating mounts. The KXE design is suitable for moving air and process gases in systems requiring high flow rates and pressure. This unit was manufactured in 2020 for a rated volume flow of 500 m³/min and a total pressure increase of 2500 daPa. At its operating point, it delivers 602.4 m³/min at 1862 daPa and 3033 rpm. The shaft is supported by two 6318 bearings lubricated with Shell Gadus S2 V100 2 grease. Manufacturer: Konrad Reitz Ventilatoren GmbH & Co. KG Type: KXE 250-050030-00 Product type: industrial centrifugal fan Serial number: 376292 Year of manufacture: 2020 Material number: 10466442 Measurement category: C Efficiency grade: N61 Target efficiency grade value: 64.5 Rated inlet temperature: 20°C Operating-point inlet temperature: 40°C Rated inlet medium density: 1.205 kg/m³ Operating-point inlet medium density: 0.93 kg/m³ Rated volume flow: 500 m³/min Operating-point volume flow: 602.4 m³/min Rated total-pressure increase: 2500 daPa Operating-point total-pressure increase: 1862 daPa Optimum efficiency: 76.3% Rated shaft power: 256.57 kW Operating-point shaft power: 231.1 kW Gujdpszw Ucxofx Aqgjh Rated rotational speed: 2980 rpm Operating-point rotational speed: 3033 rpm Maximum rotational speed: 3159 rpm Maximum medium temperature: 80°C Drive-end bearing: 6318 Non-drive-end bearing: 6318 Lubricant: Shell Gadus S2 V100 2 Initial relubrication interval: 2460 operating hours Subsequent relubrication interval: every 2460 operating hours Grease quantity per bearing: 132 g Conformity marking: CE

Year of construction: 2020, condition: used, functionality: fully functional, machine/vehicle number: 376295, The Reitz KXE 250-050030-00 is an industrial centrifugal fan designed to generate a high total pressure increase in process installations. The assembly consists of a volute fan casing, an impeller mounted on a separately supported shaft, a coupled electric motor, and a common steel base frame with vibration-isolating mounts. The KXE design is suitable for moving air and process gases in systems requiring high flow rates and pressure. This unit was manufactured in 2020 for a rated volume flow of 500 m³/min and a total pressure increase of 2500 daPa. At its operating point, it delivers 602.4 m³/min at 1862 daPa and 3033 rpm. The shaft is supported by two 6318 bearings lubricated with Shell Gadus S2 V100 2 grease. Manufacturer: Konrad Reitz Ventilatoren GmbH & Co. KG Type: KXE 250-050030-00 Product type: industrial centrifugal fan Serial number: 376295 Year of manufacture: 2020 Material number: 10466442 Measurement category: C Efficiency grade: N61 Target efficiency grade value: 64.5 Rated inlet temperature: 20°C Operating-point inlet temperature: 40°C Rated inlet medium density: 1.205 kg/m³ Operating-point inlet medium density: 0.93 kg/m³ Rated volume flow: 500 m³/min Operating-point volume flow: 602.4 m³/min Rated total pressure increase: 2500 daPa Operating-point total pressure increase: 1862 daPa Optimum efficiency: 76.3% Rated shaft power: 256.57 kW Operating-point shaft power: 231.1 kW Rated rotational speed: 2980 rpm Operating-point rotational speed: 3033 rpm Maximum rotational speed: 3159 rpm Maximum medium temperature: 80°C Gjdpozw Ug Rsfx Aqgjuh Drive-end bearing: 6318 Non-drive-end bearing: 6318 Lubricant: Shell Gadus S2 V100 2 Initial relubrication interval: 2460 operating hours Subsequent relubrication interval: every 2460 operating hours Grease quantity per bearing: 132 g Conformity marking: CE

Condition: used, Spin dryer for washed vegetables This centrifuge spins washed lettuce, vegetables or herbs dry. The product goes into the removable blue basket, the lid closes and the machine spins the water out, which drains through the outlet at the side. Spin time is set with the timer switch on the base. There is no manufacturer rating plate, so the make and year of manufacture are unknown. Located in Emmeloord, the Netherlands. Immediately available, price on request. More photos and full specifications: / Type: Vegetable spin dryer (centrifuge) Basket: Removable plastic basket Controls: Timer switch Drain: Water outlet at the side Construction: Stainless steel, hinged lid Gedez Ndbxopfx Aqgeuh

Condition: used, Used GEA Westfalia CSA 160-47-076 separator centrifuge. Working speed of bowl up to 6800 rpm. Maximum temperature up to 100°C. Machine is driven by Atex rated electric motor 30 kW, 50 HZ. Also includes tools. Guodpfjzvychox Aqgoh