Zeiss Pro T Compact nakup rabljenega (81.120)

Stanje: novo, Leto izdelave: 2025, Compact Concrete Batching Plant PROMAX C60-SNG PLUS (60m³/h) Type: Compact concrete batching plant with single-shaft mixer Capacity: 60 m³/hour of freshly mixed concrete Mixer capacity: 1500/1000 L (1 m³ compressed concrete) Central lubrication system brand: ILC (Made in Italy) Control system: Fully automatic PC - PLC - printer Electronic equipment: Siemens Other equipment and accessories: Italian Unlimited users and remote access Gbjdpfjflz Hdjx Anfol Very low transport costs: only one container Installation and commissioning of the plant are our responsibility We provide excellent after-sales service 24/7 SERVICES Export of more than 700 concrete plants to over 60 countries worldwide * LOW SHIPPING COSTS (only one 40F-OT container or standard trailer) * QUICK INSTALLATION * SIMPLE AND EASY TO USE

Stanje: zelo dobro (rabljeno), Leto izdelave: 1990, Koordinatni merilni stroj MC 850 08/12/06 UHING Leto izdelave: 08/1990 Krmiljenje: C98 Podatkovni sistem: Unix Workstation B2000 Dongle na voljo: ne Programska oprema: UMESS Unix 8.21 Gbedpfx Anoy Hrbysfol

Stanje: dober (rabljeno), Leto izdelave: 2007, Charpente métallique - plateforme de stockage, 500 kg/m², env. 2 000 m² disponibles – occasion : Prix départ site : maintenant seulement 79 000 € au lieu de 130 000 € (HT), démonté, emballé et chargé. Environ 60 % de la surface est disponible avec du panneau aggloméré – mais en mauvais état ! Constructeur : Pro Man Type : plateforme de stockage Année de fabrication : 2007 Charge maximale : 500 kg/m² Hauteur d’étage (bord supérieur du revêtement de sol) : 3 462 mm Sous-face des poutres : 3 230 mm Dimensions : 71 000 mm x 28 000 mm (env. 1 988 m²) Niveau supérieur : 3 462 mm Niveau inférieur : 3 220 mm Revêtement de sol : panneau aggloméré 38 mm 1 zone de transfert pour palettes Entraxes : 4 x 4 m Revêtement partiellement en panneau aggloméré (38 mm), partiellement en caillebotis Sous-face panneau aggloméré : blanc État : très bon Gbedsy Iv Hcepfx Anfsl Disponible : immédiatement Emplacement : Niedernberg près d’Aschaffenburg À la charge de l’acheteur : visseries neuves, etc. Accessoires (escaliers, garde-corps, zones de transfert de palettes) malheureusement non disponibles !

Stanje: rabljeno, 🔥 For Sale: HDG Compact 15–50 kW Biomass Boiler – Flexible and Compact Wood Chip Heating System 🔥 The HDG Compact 15–50 kW is a versatile biomass boiler – ideal for residential buildings, small commercial facilities, or agricultural applications. It is suitable for use with wood chips and pellets, offers modular output, and fully automatic operation in a space-saving design. ⸻ Key Features: 🌲 Fuel: Wood chips or pellets ⚡ Output: 15–50 kW 🧠 Fully automatic ignition, feed, and cleaning 🔧 Compact construction – perfect for plant rooms with limited space 🇩🇪 HDG Bavaria – Precision biomass technology made in Germany 📍 Location: Hungary, 9200 Mosonmagyaróvár, Kötöttárugyári út 22 (ProfiKazán) ⸻ 💼 Top Heating Systems – ProfiKazán Compact biomass heating systems with maximum flexibility. TOP HEATING SYSTEMS – Used heating systems, boilers, heat pumps & accessories directly from stock Gbedpfx Anowahhvofjl We are a family business with around 20 years of experience in heating technology and operate a 1,500 m² warehouse in Mosonmagyaróvár, Hungary, with around 50–60 units constantly available from stock. 📍 Location: Our warehouse is located in Mosonmagyaróvár, Hungary – approximately 15 km from the Austrian border and about 80 km from Vienna. Mosonmagyaróvár is the first major city on the Hungarian side after the Austrian border. 🔥 Our product range includes, among others: • Wood chip boilers • Pellet boilers • Wood gasification boilers • Log boilers • Biomass boilers • Oil and gas boilers • Heat pumps • Thermal ventilators • Hot air blowers • Warm air heaters • Industrial heaters • Buffer tanks • Heat exchangers • Feed screws • Discharge systems • Burners • Pumps • Extensive heating accessories ⚙️ Accessories and components: We also offer a wide range of accessories, including circulation pumps, plate heat exchangers, and many other components – suitable from private to industrial scale. 🏭 Brands in our portfolio: Fröling, Hargassner, KWB, HDG, Binder, ETA, Herz, Guntamatic, Windhager, Viessmann, Buderus, and many more. 🌐 Current offers: You can find most of our current offers on our website: topheatingsystems.com In addition, we have more units available which have not yet been listed online. 📅 Inspection: Viewing at our warehouse is possible by prior appointment. If you are interested, please feel free to contact us – we are happy to help you find the right solution.

Stanje: generalkompletno obnovljen (rabljeno), Funkcionalnost: popolnoma funkcionalen, Rabljeni, posodobljeni 3D-CNC koordinatni merilni stroj. ZEISS Contura - rabljeni sistem, oprema po izbiri . Gbodpfx Asxzp U Dsnfol Merilni stroj s premičnim portalom Mizna plošča iz granita posodobljen z novo CNC-krmilno enoto, novim tipalnim sistemom, novim računalnikom in novo 3D programsko opremo na operacijskem sistemu Windows 11 Pro. Oprema se lahko individualno prilagodi vašim zahtevam. Več podrobnosti na zahtevo Merilno območje X = 700 mm - Y = 1.000 mm - Z = 600 mm Merilna negotovost MPEE (1): 1,9+L/300 ob upoštevanju pogojev okolja, ki jih določi proizvajalec. Slika še vedno prikazuje prvotno konfiguracijo tipala Cena: na zahtevo - ᐳᐳᐳ Posamezen kos – dokler je na voljo ᐸᐸᐸ

Stanje: pripravljen za uporabo (rabljen), Zeiss 608093 9203 ÄZ02 35/05 meritev poti 32 Prismo / meritev položaja 32 Prismo-ST 608093-9203-701, rabljeno, kot novo, 100% delujoče Gbsdsy Rcrwopfx Anfsl

Stanje: zelo dobro (rabljeno), Originalni stopniščni stol Stryker Stair-Pro model 6252, namenjen varnemu prevozu pacientov po stopnicah. Opremljen s sistemom gosenic, ki bistveno zmanjša napor reševalcev in poveča nadzor med spuščanjem. Robustna aluminijasta konstrukcija, visoka nosilnost (pribl. 227 kg), komplet varnostnih pasov ter zložljivi elementi za enostaven transport in shranjevanje. Oprema je v brezhibnem, popolnem stanju in zelo dobro ohranjena – pripravljena za takojšnjo uporabo. Proizvedeno v ZDA. Idealno za NMP, gasilske enote, bolnišnice, nujne oddelke ter domove za ostarele. Ključne lastnosti: • Model: Stair-Pro 6252 • Sistem: gosenice (varno spuščanje po stopnicah) • Nosilnost: do pribl. 227 kg • Konstrukcija: lahka in vzdržljiva aluminijasta okvir • Varnost: pritrdilni pasovi, stabilni ročaji Gbjdpfx Ajx N Idcenfsl • Stanje: rabljeno, zelo dobro, brezhibno • Proizvodnja: Made in USA

Stanje: zelo dobro (rabljeno), Naprodaj profesionalni stroj za mikroudarno označevanje PRO PEN P5000 (GravoTech Marking SAS), ki ga distribuira skupina HAHN+KOLB. Povsem industrijska oprema, namenjena trajnemu označevanju kovinskih in plastičnih delov – serijske številke, logotipi, kode, proizvodne oznake. Tehnični podatki: • Model: Propen P5000 Pn/d • Leto izdelave: 2010 • Napajanje: 100–240 V, 50/60 Hz • Moč: 150 W • Obratovalni tlak: 5,5 bara (pnevmatski pogon) • Proizvajalec: GravoTech Marking SAS, Francija • Operaterska plošča z zaslonom na dotik + tipkovnica HP • Stabilna delovna miza z vodili. Stroj je popoln, delujoč in pripravljen za takojšnjo uporabo. Idealen za delavnice, proizvodne obrate, orodjarne in povsod, kjer je zahtevano hitro in natančno trajno označevanje. Zelo dobro stanje – naprava je vzdrževana, z minimalnimi sledmi uporabe. Gjdpfxjw R Spqe Anfebl

Stanje: zelo dobro (rabljeno), Leto izdelave: 2006, Carl Zeiss Contura G2 7/10/6 VAST XT Gold Tehnični podatki: Merilno območje: X=700mm, Y=1000mm, Z=600mm Krmiljenje C99 z upravljalno ploščo BP26_SE Zadnja kalibracija: 05/2025 Retrofit Gbsdpfjy Ia Tasx Anfel Oprema: 8-pozicijski sistem menjave tipal MSR Polica za menjavo tipal Dodatki za tipala Kalibracijska krogla Delovna postaja HP Z4 WIN11 z monitorjem Programska oprema Calypso Možnosti: Planner, IGES vhod/izhod Dodatna oprema

Stanje: pripravljen za uporabo (rabljen), Leto izdelave: 2003, Na voljo je CNC koordinatni merilni stroj Zeiss, umerjen ob koncu leta 2025. Merilne dimenzije X/Y/Z: 1200mm/1800mm/1000mm, največja masa obdelovanca: 2000kg, odstopanje pri merjenju dolžine: 2µm/L300, ločljivost: 0,2µm, hitrost merjenja: 200/s, maksimalna dolžina tipala: 800mm, maksimalna masa tipala: 600g, merilna glava: VAST Gold Scanning. Dimenzije stroja X/Y/Z: pribl. 3000mm/2050mm/3550mm, teža: pribl. 6000kg. Brez rastrske plošče, stojala za tipala, programske licence in računalnika. Dokumentacija je na voljo. Ogled na lokaciji je možen. Gbodpfxey Nm Uge Anfol

Leto izdelave: 2022, stanje: pripravljen za uporabo (rabljen), Optical measuring machine from 2022. This ZEISS GOM ATOS Q operates with a triple-scan principle and utilizes LED-structured blue light for precise measurements. If you are looking for high-quality optical measurement capabilities, consider the ZEISS GOM ATOS Q machine we are offering for sale. Please contact us for further details. Gedpfx Asymmq Ujnfjbl • ZEISS ATOS Q – Optical 3D measuring system • System type: Industrial 3D scanner with structured light • Measuring principle: Fringe projection / Triple-scan technology • Light source: LED with Blue Light Equalizer • Laser pointer for distance adjustment • Cameras: 2 × 8 megapixel CMOS • Camera resolution: 3357 × 2456 pixels • Included measuring volumes: • 350 × 260 mm • 170 × 130 mm • Sensor dimensions: approx. 325 × 240 × 90 mm • Sensor weight: approx. 4 kg • Robust industrial housing • Sensor cable connection via fiber-optic cable • Calibration objects with DAkkS certificate • Acceptance measurement according to VDI/VDE 2634 Part 3 • Traceable acceptance protocol • Mobile control: Converter box with image processing card (fiber-optic to Thunderbolt) • External power supply • Workstation (Laptop 7760 Mobile): Intel 2.6 GHz octa-core CPU • 64 GB RAM • NVIDIA Quadro graphics card • 17" display • 1 TB SSD • External USB backup drive • WiFi / LAN / USB 3.2 / Thunderbolt • Operating system: Windows 10 (64-bit) • Software: ZEISS Quality Suite • ATOS sensor driver • GOM Inspect • CAD import formats: IGES, STEP, VDA, JT, STL, PLY • Export formats: STL, G3D

Stanje: dober (rabljeno), Nagel Foldnak Compact izdelovalec brošur s obrezovalnikom Stroj je v delujočem stanju in pripravljen za proizvodnjo. Zelo dobro ohranjen. Stroj splete na dveh točkah in prepogne na pol, da ustvari končano brošuro, medtem ko rezalni nož odreže sprednji rob brošure. Opis: – Običajno spenjanje in opcijsko zanko spenjanje (standardne sponke, ekonomično za uporabo) – Nastavljive glave – Možnost izklopa spenjanja ali zgibanja (npr. samo šivanje) – Proženje s pritiskom na gumb ali fotocelico – Števec kopij – Stranska in sprednja poravnava – Indikator za sponke – Format SRA3 – 230V napajanje Podpira nestandardne formate. Gbedpfx Aey Hgi Eonfel

Stanje: generalkompletno obnovljen (rabljeno), Leto izdelave: 1999, Funkcionalnost: popolnoma funkcionalen, merilno območje os X: 1.200 mm, merilno območje osi Y: 2.415 mm, merilno območje os Z: 1.000 mm, Stroj je bil pred približno 6 leti popolnoma obnovljen in krmilni sistem je bil posodobljen na najsodobnejšo raven. Tehnični podatki: Prehod portala (prečno): 1440 mm X-hod (prečno): 1200 mm Y-hod (vzdolžno): 2415 mm Z-hod (vertikalno): 1000 mm Merilna glava: Vast Gold Gsdpfx Aoy Amfrenfsbl Redno vzdrževanje s strani podjetja Zeiss Z zaščitnim ohišjem

Stanje: dober (rabljeno), Leto izdelave: 2012, Funkcionalnost: popolnoma funkcionalen, merilno območje os X: 400 mm, merilno območje osi Y: 400 mm, merilno območje os Z: 200 mm, potovalna razdalja osi X: 400 mm, pomik osi Y: 400 mm, pomik po osi Z: 200 mm, vhodna napetost: 230 V, Oprema: Na voljo je tipska ploščica, osvetlitev, Year of manufacture: 2012 Tactile probe: Vast XXT E0 X/Y (1D) in [μm] at 20 ±2 °C: 1.7 + L/250 E0 XY (2D) in [μm] at 20 ±2 °C: 1.7 + L/250 E0 (3D) in [μm] at 20 ±2 °C: 1.9 + L/250 Scanning probing deviation MPE according to ISO 10360-4:2000 THP: 2.7 [μm] Single stylus probing deviation, form MPE according to ISO 10360-5:2010 PFTU: 1.9 [μm] Camera system: Zeiss Discovery 12 EB X/Y (1D) 5) in [μm] at 20 ±2 °C: 1.7 + L/250 EB XY (2D) 5) in [μm] at 20 ±2 °C: 1.7 + L/250 Probing deviation MPE according to ISO 10360-7:2011 Gedpfx Aneuq Nfhofebl PF2D 5): 1.7 [μm] Probing deviation of the image processing system MPE according to ISO 10360-7:2011 PFV2D 5): 1.2 [μm] Available services: Delivery, commissioning

Stanje: zelo dobro (rabljeno), Leto izdelave: 2015, Funkcionalnost: popolnoma funkcionalen, • Used device with upgraded cathode systems Gedpfxoy Ep S Ro Anfobl o LAB6 cathode o Tungsten cathode • EDX, energy-dispersive X-ray spectroscopy, enabling direct chemical analysis in the SEM • Lens-mounted 5-channel BSD • Infrared camera mounted on the chamber door • Maintenance by manufacturer Zeiss and Oxford Instruments until 2024 • 19" flat panel display, 2 units • Joystick controller for stage movement • Ergonomically designed control console • Software module for automatic centering of any image detail • Stage baseplate with X and Y axis movement • Stage setup includes tilt, rotation, and Z-axis, removable Accessories • Transport locks and transport rollers • 2x Wehnelt + anode + 3 tungsten filaments • Stage spacers (3 pieces, different heights) + tools • 1x 9-position sample holder for rods o Collimator shorts 150 o Collimator long etc. 150 o Collimator long 50/80 mm² MK2 • 1x fixed aperture holder • 2x 100 μm VP aperture • 1x 750 μm VP aperture • 2x 20 μm aperture • 1x 30 μm aperture • 1x 100 μm aperture • Various tools (tool kit) and sealing rings • 1 lens-mounted 5-channel BSD (1 EVO BSD DIODE 5 CH Standard, low light. With signs of use, possibly for replacement) AZtec Adv Rec. 3.2 + 2024 update

Stanje: generalkompletno obnovljen (rabljeno), Leto izdelave: 2017, Vutek H2000 UV hibridni tiskalnik, popolnoma obnovljen, s 3-mesečno garancijo. Barvni kanali: 6C CMYL LCLM, 2 x bela. Ločljivost: 1000 dpi z Ultradrop 7pl. Tiskovna širina: 205 cm, tiskovna višina: 5 cm. Hitrost do 90 m²/h. Gbjdpfx Aoyzg Tyjnfol

Stanje: zelo dobro (rabljeno), Leto izdelave: 1999, Funkcionalnost: popolnoma funkcionalen, merilno območje os X: 700 mm, merilno območje osi Y: 900 mm, merilno območje os Z: 500 mm, Zeiss CNC Coordinate Measuring Machine Prismo MP5 Year of manufacture: 08/1999 Last calibration: 09/2023 Measuring range: X = 700 mm, Y = 900 mm, Z = 500 mm Machine features, equipment: C98 control with operator panel RDS sensor technology with RST 5-position probe change magazine Godpfx Anjufgbnsfebl RST 5x probing system Reference probe Probe accessories Calibration sphere PC with monitor Software: Calypso Basic 5.4 Loading system Further accessories and options available Complete retrofit to C99 and latest Calypso version possible Available at short notice

Stanje: zelo dobro (rabljeno), Merilna glava je bila uporabljena na Zeiss Prismo Ultra kot zamenljiva tipalna glava z malo obratovalnimi urami. Gedpfx Ajy Epm Isnfsbl

Stanje: zelo dobro (rabljeno), Naprodaj profesionalni vijačni kompresor priznane nemške znamke BLITZ Model Monsun Pro Eco 15 – industrijska naprava, zelo kakovostna izdelava, tiho delovanje, visoka zmogljivost. Idealno za delavnice, proizvodnjo, ličarske delavnice in povsod tam, kjer je potrebna stalna in stabilna dobava stisnjenega zraka. ⸻ TEHNIČNI PODATKI: • Proizvajalec: Blitz • Model: Monsun Pro Eco 15 • Moč motorja: 15 kW • Delovni tlak: 10 bar • Zmogljivost: pribl. 2,0 m3/min • Obrati: 1500 / 3000 obr/min • Leto izdelave: 2011 • Napajanje: 400V (3 faze) ⸻ DELOVNE URE: • pribl. 17.954 h ⸻ OPREMA: - kontrolna plošča - zvočno izolirano ohišje - inštalacija pripravljena za priklop - kompaktna zasnova ⸻ TEHNIČNO STANJE: • kompresor deluje • običajni znaki uporabe • deluje brezhibno ⸻ UPORABA: • avtoservisi • industrija Gjdpfx Asy A Tp Renfjbl • proizvodnja • ličarske delavnice • servisna podjetja

Stanje: dober (rabljeno), Polar Mohr N92 PRO HD giljotina za rezanje papirja Stroj v popolnem stanju, servisiran in pripravljen za delo. Izdelan leta 2021. Edinstven model na trgu. Vizualizacija reza na monitorju. Godpfjy Ah Izox Anfobl Tehnične specifikacije: Širina reza: 920 mm Višina kupa: 130 mm Programator z 21,5'' barvnim HD zaslonom na dotik Napajanje: 400V Teža: 2000 kg Povečane stranske mize Kromirana površina mize Osvetlitev mize in optična linija rezanja Prilagodljiva pritrdilna sila Dodatni pokrovi zadnje mize Rezervno rezilo, letve za rezanje, udarni blok in orodje za upravljanje v kompletu.

Stanje: rabljeno, Funkcionalnost: popolnoma funkcionalen, In this offer, you are purchasing a used color production system "Ricoh Pro C7200x". Scope of delivery: 1 x Ricoh Pro C7200x with the following configuration: - including Fiery Controller E-45A - including Vacuum Feed LCIT RT5120 - including Finisher SR5050 - including Banner Sheet option Not the configuration you need? We can customize the machine according to your requirements. Please feel free to contact us! Meter readings: Total: approx. 2,403,577 pages Color: approx. 1,749,798 pages Black: approx. 653,779 pages Gbjdpfsy Dffyex Anfjl Condition: This offer concerns a used device, which may show signs of use (minor scratches or yellowing). The device has been tested for functionality. A test print can be seen in the photo. Packaging and shipping: You are welcome to inspect the device during our business hours. Please make an appointment in advance! Seaworthy packaging and worldwide shipping available upon request! Before shipping or collection, a functionality test will be documented for you on video. For further information, please do not hesitate to contact us directly.

Stanje: rabljeno, Funkcionalnost: popolnoma funkcionalen, In this offer, you are purchasing a pre-owned color production system "Ricoh Pro C9200" Scope of delivery: 1 x Ricoh Pro C9200 with the following configuration: - incl. Fiery Controller E-46 - incl. Vacuum Feed LCIT RT5120 - incl. Stacker SK5040 - incl. Finisher SR5050 Not the right configuration? No problem – we can customize the machine to your requirements. Please feel free to contact us! Meter readings: Godpfx Ansy Alpiefobl Total: approx. 12,985,706 pages Color: approx. 9,857,702 pages Black: approx. 3,128,004 pages Condition: This offer refers to a used device, which may show signs of wear (such as minor scratches or yellowing). The machine has been function tested. A test printout can be seen in the photo. Packaging and Shipping: You are welcome to inspect the device during our business hours. Please schedule an appointment! Seaworthy packaging and worldwide shipping available upon request! Before shipping or collection, a video documenting a functional test will be provided for you. For further information, feel free to contact us directly.

Stanje: skoraj kot novo (rabljeno), Leto izdelave: 2022, Funkcionalnost: popolnoma funkcionalen, merilno območje os X: 300 mm, merilno območje osi Y: 200 mm, merilno območje os Z: 200 mm, Oprema: Na voljo je tipska ploščica, Vključno s krmilno konzolo, krmilnim računalnikom in programsko opremo, kot je prikazano na slikah. EXW – osebni prevzem na lokaciji Godpfxjyam S Se Anfebl Podjetje kupca mora podpisati kupoprodajno pogodbo in razkriti/potrditi svoje dejanske upravičence. Poleg tega mora podpisnik opraviti identifikacijski postopek Postident.

Stanje: rabljeno, prevoženi kilometri: 179.711 km, Leto izdelave: 1994, obratovalne ure: 22.312 h, Pogon: kolesa Lastna teža: 24.800 kg Dvižna zmogljivost: 40.000 kg Gjdpfx Aneya Txxefobl Serijska številka: 0051 Stanje pnevmatik spredaj: 70 Stanje pnevmatik zadaj: 70 Transportne dimenzije (D x Š x V): 6,5x2,5x3,1 Za več informacij kontaktirajte SKUPINO PFEIFER.

Stanje: skoraj kot novo (rabljeno), Leto izdelave: 2015, Funkcionalnost: popolnoma funkcionalen, številka stroja/vozila: 201502530269, merilno območje os X: 700 mm, merilno območje osi Y: 700 mm, merilno območje os Z: 600 mm, obremenitev mize: 560 kg, Oprema: Na voljo je tipska ploščica, dokumentacija / priročnik, ZEISS CONTURA G2 7/7/6 – VAST XXT TL1 Year of manufacture: 2015 | Commissioned: 2016 | Perfect condition | Very low operating hours For sale: ZEISS Contura G2 coordinate measuring machine with a measuring range of 700 × 700 × 600 mm, equipped with a VAST XXT T1 scanning head. The device comes from a controlled laboratory environment, used exclusively on-demand on a single shift, and never integrated into a production line – resulting in exceptionally low actual running hours and excellent technical condition. 🔹 Basic Information Manufacturer: ZEISS Model: Contura G2 Measuring range (X/Y/Z): 700 / 700 / 600 mm Year of manufacture: 2015 Commissioning: 2016 Technical and visual condition: perfect Measurement error MPE (E0) = 1.7+L / 350 μm 🔹 Configuration & Equipment ✅ ZEISS VAST XXT TL1 active scanning head ✅ Probe rack/magazine ✅ Set of measurement styli (mainly diameters ⌀ 0.6 mm and ⌀ 1.5 mm) ✅ Calibration sphere ✅ BP26_SE control panel 🔹 Usage History Device operated exclusively in laboratory mode Occasional, project-based use (on-demand) Single shift, no serial or production operations As a result, the machine exhibits extremely low mechanical wear 🔹 Service & Calibration ✅ Service and calibration performed exclusively by official ZEISS service ✅ Regular maintenance according to manufacturer’s guidelines ✅ No third-party interventions ✅ Fully functional device 🔹 Status 📍 Device available immediately 🔍 Demonstration possible 📄 Complete documentation Gbsdpfsyzmbdjx Anfel ✅ Transport to be arranged by the purchaser