Used Field Spraying for sale (4,041)

Condition: refurbished (used), Year of construction: 2004, Complete refurbished Sheffield D12 with very new controller; probe, software etc. (2017) - 3D measuring machine with liner guideways (no air necessary) Gusdpfefmkxiex Ah Hoi - Machine is moveable (wheels) - Measuring range X / Y / Z = 500 x 900 x 400mm - Accuracy acc. to ISO 10.360 MPE = 4,9 + 4L/1000µm - Pantec Eagle Controller - Temperature control on demand (new) - Renishaw PH1, on demand PH10T (used or new) - Renishaw TP20 (used or new) - Renishaw MCR200 probe change rack (on demand) - Software Inspect3D Inca Professional (new + options) - Computer HP Workstation W10 (like new) Machine is ready for demonstration

Year of construction: 1987, condition: good (used), Manufacturer - Cams Shefield Year - 1987 Speed - up to 80 m/min. Gjdpfogk Nu Hox Ah Houi Width of sheet - 1250 mm Thicknes - up to 6 mm Coiler capacity - 12 tons

Condition: used, Year of construction: 1980, Technical details: Guodou Nfhdopfx Ah Hoi pressure: ca. 100 t distance between columns: 500 mm throat: bis Mitte Stößel / up to center ram: 350 mm dayligth: 450+100 mm min. ram stroke: 26 mm max. ram stroke: 152 mm ram adjustment: möglich/possible mm ram surface area: 550 x 400 mm clamping table: 1020 x 710 mm total power requirement: 10 kW weight of the machine ca.: ca.7 t space requirement approx.:: L:2,0 x B:1,7 x H:3,2 m WITHOUT drawing cushion Can be demonstrated in idle run. i.D. *

Condition: excellent (used), Year of construction: 2022, operating hours: 60 h, machine/vehicle number: 16664, construction height: 1,300 mm, product width (max.): 1,250 mm, enginetype: Electric, manufacturer: [div] Gujdpfsxubiajx Ah Hoi

Condition: excellent (used), Meren Jonson Multi-Saw with Automation Powered roller infeed with centering Roller outfeed with side pusher Gedpfx Ahexm Sczs Hsui Rubber crawler feed system Press rollers under the shaft for cutting short pieces Smooth feed speed adjustment Maximum cutting height: 100 mm Supported saw shaft Main motor: 75 HP (56 kW) Planer Double-sided planing (top and bottom) Working width: 610 mm Working height: 152 mm Bottom motor power: 15 kW Material removal: 12.7 mm Electrically adjustable working height Maximum feed speed: 30 m/min Automatic lubrication system Total power: 50 kW

Condition: new, Year of construction: 2022, machine/vehicle number: 16661, construction height: 1,300 mm, product width (max.): 1,250 mm, enginetype: Electric, manufacturer: [div] Gujdpfxsxtr E As Ah Hoi

Condition: excellent (used), Year of construction: 2020, Profibus single module, Profibus single module for PLC control, fieldbus, PROFIBUS, input module, connection device fieldbus, fieldbus control, interface module Gsdpfx Aoxu Ul Ueh Hsui -Manufacturer: SEW-Eurodrive, Fieldbus control interface module -Type: ECC-DFC-24-00 -Number: 5 modules available -Dimensions: 200/55/H30 mm -Weight: 0.2 kg/pc.

Condition: used, 4-way combi fields BF5-41, year of manufacture 1988, good condition, new aluminum format table, 3 kW, 4 knives, approx. 600 kg Gujdpjvrviyjfx Ah Hsi Prices subject to change, errors, printing and typesetting errors reserved

Condition: used, Fieldbus gateway, Canopen Fieldbus gateway: for EnDat encoders -Output signal: CANopen, DeviceNet or PROFIBUS DP protocol -to connect: from encoder to fieldbus -Signal converter: for encoders of the 600 series with EnDat interface Gjdpfxodkqhfj Ah Hsui -Protection class: IP 65 -Dimensions: 90/145/H30 mm -Weight: 0.38 kg

Condition: good (used), Profibus single module, Profibus single module for PLC control, fieldbus, PROFIBUS, input module, Connection Device Fieldbus -Manufacturer: Sick, fieldbus module for Profibus -Type: CDF600.0100 -Article number: 1041251 Gujdpfx Ahjt Trxce Hoi -Number: 44x modules available -Dimensions: 225/75/H50 mm -Weight: 0.6 kg/piece

Condition: used, Fieldbus, Profibus, PLC control, automation technology, controls and regulators Guodpfx Ahsd Hacae Hsi -Fieldbus coupler type: 750-333 -Bus terminals: 19 (14x750-403/4x 750-504/1x750-600) -Dimensions: 280/100/H65 mm -Weight: 1 kg

Condition: ready for operation (used), Year of construction: 2022, functionality: fully functional, machine/vehicle number: 532.323/10-0, total height: 6,454 mm, total width: 6,810 mm, total length: 2,810 mm, load capacity per storage section: 180 kg, load capacity: 40,000 kg, A set of 2 Hänel Lean Lifts in a linked lift system is being auctioned here! Machine numbers: 532.323/10-0*1 & 532.323/10-0*2 Exact model designation: Hänel Lean Lift 3060-825/281/340/75/180/40HS TECHNICAL DETAILS Load capacities (each) Max. container load: 180 kg Max. number of containers: 163 Max. total load: 40,000 kg per Lean Lift (deduct container weight) Access point 1 (front side) Clear opening height: 880 mm Access height: 890 mm (standard height) Access point height to operator’s floor: 890 mm LED lighting: yes Manual sliding door: yes Light curtain: yes Access point: Optoelectronic identification system (28-fold) for precise measurement of goods height Drive and travel speed Vertical speed without container: max. 1.83 m/s Vertical speed with container: max. 0.95 m/s Horizontal speed: max. 0.5 m/s Connection: 400 V / 20 A at 50 Hz Lift capacity: 5 kW Vertical motor power: 4 kW Horizontal motor power: 0.37 kW Lift control Controller type: MP 14 N-H TFT Display: Touch display with integrated alphanumeric keypad and function key block USB interfaces: 1 Serial interfaces (RS-232): 2 Ethernet interface: available, for HOST integration (communication with any ERP system) Protocol: SOAP protocol Operating mode: HostWebSOAP for warehouse management in WMS Display language: German (DE) Additional memory card: included, for S-Version (standalone) Module 00 - remote-controlled lift operation Safety equipment: special protective equipment required for remote control outside the field of view MACHINE DETAILS Unit height: 6,454 mm Unit width per system/total: 3,405 / 6,810 mm Unit depth: 2,810 mm Net weight without containers per system: 4,371 kg Container empty weight per system: 2,275 kg Electrical data Phases: 3 Frequency: 50 Hz Voltage: 400 V Current consumption: 10.2 A Minimum cable cross-section of power supply: 2.5 mm² at 9.6 A Maximum fuse rating of power supply: 20 A / 400 V Colour: Pearl grey Gusdpjxr Ng Usfx Ah Hji EQUIPMENT - Hänel Pick-o-Light-Vario (2-axis movable LED light field for colour-marking the requested item) - Height sensors for automatic fill height recognition and height-optimized storage - Hänel slot wall: 131 usable shelf profiles, slot profile 75 mm, container usable heights: 55 - 730 mm in 25 mm increments - High-Speed Generation for increased vertical and horizontal travel speeds - ESB Package: Redundancy system consisting of 8 integrated safety circuits + 2nd safety circuit

Condition: ready for operation (used), functionality: fully functional, Year of construction: 2008, operating hours: 25,000 h, laser power: 4,000 W, sheet thickness (max.): 20 mm, travel distance X-axis: 3,000 mm, travel distance Y-axis: 1,500 mm, travel distance Z-axis: 114 mm, No reserve price – guaranteed sale to the highest bidder! Regularly serviced laser cutting machine with comprehensive accessories! TECHNICAL DETAILS X-axis travel: 3,000 mm Y-axis travel: 1,500 mm Z-axis travel: 114 mm Laser power: 4,000 W Working area: 3,000 mm Max. material thickness: 20 mm Xp stroke: 300 mm (max. 305 mm) Max. positioning speed parallel to axis: 120 m/min X-axis positioning acceleration: 9 m/s² Xp + Y-axis: 15 m/s² Cutting speed X-axis: 4 m/s Cutting speed Xp and Y-axis: 15 m/s MACHINE DETAILS Control: Sinumerik 840D control Dimensions & Weight Dimensions: approx. 9,300 x 4,600 x 2,000 mm Weight: approx. 11,500 kg Laser hours: 25,000 h EQUIPMENT Cooling unit Automatic pallet changer Enclosed beam guide NitroLine high-pressure cutting FocusLine constant focal position Compressed air cutting PierceLine for reduced piercing time PlasmaLine plasma sensors SprintLine for rapid processing Godpjxt Evnsfx Ah Hsui LensLine FlyLine ContourLine for small hole production Micro welding Spray device (unused/virgin) Positioning laser diode Programmable cutting gas pressure Automatic shut-off Work area lighting TruTops Laser lite CO2 laser TruFlow 3200 with high-frequency excitation Mirror telescope and maintenance-free turbo radial blower Laser control TASC 3 with logbook function and cooling unit Laser cutting head with 5" and 7.5" lenses, quick-change system ControlLine capacitive height monitoring and process control Error causes via diagnostic functions Additional laser cutting head with 3.75" lens for high-speed cutting Pallet changer system Note: The Trumpf LoadMaster shown in the photos is not included in the offer.

Condition: excellent (used), Year of construction: 2019, operating hours: 613 h, functionality: fully functional, machine/vehicle number: AH00001133, feed rate X-axis: 18 m/min, power of the buffing unit: 260 W, workpiece height (max.): 45 mm, edge thickness (max.): 3 mm, power of the milling unit: 1,500 W, overall weight: 1,746 kg, type of input current: AC, compressed air connection: 6 bar, height adjustment type: mechanical, input voltage: 415 V, power: 20 kW (27.19 HP), input current: 48 A, input frequency: 50 Hz, Manufacturer: SCM Model: Olimpic K560R Year:2019 Condition: Excellent. Lightly used and currently used in manufacturing Availability: End Oct 2025 Location: Northern Ireland Guodpfx Aow Nyqajh Hji Financial Information: VAT: This will be charged to UK companies only Duty: There is no customs or duty selling into the EU from Northern Ireland Price: This is as seen and does not include preparing the machine for transport. This is a fixed price. There are no further discounts available. Machine Specification: If you want to run Airtec (Airfusion) PU and EVA then this is the machine for you. This is a fully specified K560 with many extras. Everything you need to put it into production quickly is included. Please read the full description. Track Speed 12-18mm Panel Thickness 8-60mm Max Edge thickness Strips 6mm Max Edge Thickness Coil 3mm Coil plate diameter 780mm Distance between two panels 600mm Min Panel Length 140mm Min Panel Width 100mm Work height 900mm Machine length: approx. 4950 mm Autoset: Automates the machine set up when changing work (e.g. changing from 1st to 2nd passage) Pre-Milling: 2 off high freq motors Max removal 3mm Infra-red Ceramic Lamps: The heat the panels before gluing AAR anti-adhesive unit: Prevents adhesive sticking to the upper and lower panel surfaces SGP - Special Glue Pot: Machine configured for BOTH EVA and PU glue Airfusion +E unit: Hot air application of pre-coated edge band to avoid the use of glue K/SEL end trim unit: 2 high freq motors 0-15 deg adjustment of cutting angle RK trimming unit: 2 high frequency motors ROUND X Rounding unit: Twin high frequency motor corner rounding RAS/K edge scraping unit: For rounded edge scraping post machining RCV glue scraping unit: Top and bottom scraping to remove excess edge band and glue SPV brushing unit with spray: removes glue and polishes edging and boar Spray mist device for delicate edges: Allowing the processing of high gloss edging StarTouch electronic control: Touch sensitive control panel Optional extras: Leitz pre-milling tooling blocks – Brand new – never used -€1000 Ducting – The ducting to connect to the extraction - €2500 - We recommend purchasing this. Extraction system to suit €2500 Compressors to suit €2500 each

Year of construction: 2024, condition: excellent (used), functionality: fully functional, laser power: 200 W, laser wavelength: 1,064 nm, machine/vehicle number: 202404170, laser type: fiber laser, laser source manufacturer: JPT, 200 w pulsed laser cleaning machine. DMK CL-2-H-200. Made by Demark. China. Air cooled. Portable. Only 24kg. Laser handheld head weighs only 1.3 kg. Extended fibre cable to 7m. Single phase 220v. Comes with extras Gsdpfxsxbh U As Ah Heui 1x field mirror F254 50x protective lenses. 1xpowerful metal fan to redirect fumes 1xair compressor. It connects onto machine to create air flow cushion to protect optics inside cleaning head. 3x pairs of protective eye wear. Great for rust and oxidation removing in hard to reach places where media blasting can not reach . I used it only on a few jobs for a couple of months. Not viable to keep it any longer as I live in the rural areas where demand for such tech is low. Businesses center are too far.

Condition: like new (used), The Acrivarn spray glazing machine features a variable speed conveyor which passes the trays or products to be coated underneath the atomising hood. Two spinning discs are used to guarantee an even glaze coverage and to disperse the coating liquid at a controlled rate. Excess glaze is filtered and returned to the reservoir within the machine to minimize wastage. Gjdpfx Aexu N Iwoh Hsui

Condition: used, This listing is for the Churwell PBI air sampler SAS Super with case and charger The unit is in full working condition and is ready for immediate use Churwell PBI Air Sampler SAS Super 100 L with Case and Charger The Churwell PBI Air Sampler SAS Super 100 is a widely used microbiological air sampling device designed for cleanrooms, pharmaceutical environments, operating theatres, and laboratories. It enables reliable air monitoring by collecting air-borne microorganisms onto contact plates or Petri dishes. Key Features: Sampling Principle: Designed to collect airborne microorganisms on microbiological agar by impaction, produced through controlled air aspiration. High Sampling Efficiency: The SAS Super models—such as the SAS Super 100 and SAS Super 180—can collect particles down to 1 micron. The SAS Super 100 offers a sampling rate of 100 liters of air per minute. Digital Control: Features a digital interface for setting sampling volume, duration, and storing operator information. Guodpfxsxv Dpxs Ah Hsi Battery-Powered: Equipped with a rechargeable battery, allowing for multiple sampling sessions on a single charge. Comes with a charger included. Portability: Lightweight and easy to carry with a protective case, ideal for field use or portable cleanroom monitoring. Technical Specifications: Air Flow Rate: 100 liters per minute Dimensions: 10.5 × 11 × 29 cm Weight: 1.75 kg Data Management: Some models support data logging and CFR 21 Part 11 compliance (varies by version) Materials: Typically stainless steel or autoclavable materials for sterile environments Accessories and Options: Aspirating heads (stainless steel or disposable) Tripods and stands Calibration adapters USB data cable (for models with digital logging)

Year of construction: 2025, condition: new, functionality: fully functional, We have 3 x 5,000L yogurt tanks for sale and available. They are very high spec: Brand new Manufactured 2025 Full gate style agitator with powerful motors that will work with thick yogurt Side and bottom jackets with 1.5" rjt connections Fully insulated bottom, side and top Two spray balls for washing and product inlet all with 2" RJT male connections Coned bottom for easy emptying 2" RJT female outlet Gedpfx Ajwtrpqeh Houi The price is per tank. We can offer a deal on all 3 tanks.

Condition: new, power: 104 kW (141.40 HP), fuel type: diesel, color: yellow, Year of construction: 2025, operating hours: 6 h, General information Field of application: Construction Serial number: HYNDN638LE0060641 Drivetrain Drive: Track Make of engine: 6BT5.9-C Weights Empty weight: 24.500 kg Condition General condition: very good Technical condition: very good Visual appearance: very good Other information Front tyres / undercarriage remaining: 100 Output of the auxiliary hydraulics: 220 l/min Delivery terms: EXW Transport dimensions (LxWxH): 12,03x3,19x3,28 Production country: IN Additional information Please contact Dennis van Loon, Antoon Schroder or Jeroen Rijk for more information Gujdpfxjxv Ebvo Ah Hji

Condition: used, This listing is for the ATi f12/D Gas transmitter The units are in full working condition and ready for immediate use ATi F12/D Gas Transmitter Overview The Series F12D Gas Transmitter is designed for detection of a variety of toxic gases in hazardous area applications. In addition, it is also well suited for general-purpose environments where toxic gas measurement is required. The F12D is highly customizable, making it adaptable to nearly every fixed-mount toxic gas monitoring application. Key Features Extensive Gas Detection Supports over 60 interchangeable electrochemical sensors for detecting gases such as chlorine, ammonia, hydrogen sulfide, formaldehyde, nitric oxide, phosgene, and more. Auto-Test Function An integrated Auto-Test system uses a real gas sample to verify sensor function—eliminating the need for manual bump tests and ensuring operational integrity. Smart Sensor Technology H10 Smart Sensors store their own calibration data and can be swapped out in the field without recalibration, reducing maintenance time and cost. Rugged, Durable Design The F12D features a polycarbonate enclosure with stainless steel hardware, IP65 ingress protection, and is corrosion-resistant for harsh environments. Flexible Power Supply Options Gedpfx Ajxv Dnzoh Houi Operates on 12–24 VDC, 115 VAC, or 230 VAC to suit various site requirements. Communication Capabilities Offers RS-232/485 output and optional HART® or Modbus RTU for seamless integration into digital control systems. Highly Customizable for Diverse Applications The F12D offers broad configuration options, making it suitable for: Hazardous Areas (e.g., chemical plants, refineries) General Industrial Use (e.g., wastewater treatment, food & beverage, laboratories) Customization Options Include: Sensor Holder Styles Integral mount Remote mount (6 ft cable) Duct mount Auto-Test Gas Generators Available for chlorine, ammonia, hydrogen sulfide, sulfur dioxide, and others. Digital Interface Upgrades Optional HART and Modbus interfaces for advanced integration and data transmission

Condition: used, This listing is for Kyosha kyoline co29-k5 Printer The unit is in full working condition and is ready for immediate use The Kyosha KyoLine C029-K5 Printer is in excellent working condition, ready for prompt deployment. This model is part of a series of compact and portable thermal printers crafted for mobile applications, celebrated for their cost-effectiveness, reliability, and bi-directional thermal printing capabilities. It's ideal for sectors needing swift, on-the-go printing, such as logistics, retail, and healthcare. Key Features Compact & Portable: Ideal for field operations or environments with limited space. Bi-directional Thermal Printing: Ensures consistent, high-quality printing with minimal noise. Printing Speed: 1.4 lines per second, suitable for quick receipt or label printing. Wireless Connectivity: Supports RS232, TTL serial, and Bluetooth for versatile integration. Gedpfxsxv Dhze Ah Houi Customizable: Adaptable to specific customer needs for various industry applications. High-Grade Thermal Paper: Designed to work with high-quality thermal paper for clear and durable print

Condition: used, This listing is introducing 8 No Envair Mobile Isolators of different specifications currently held in our stock The units are in full working condition and ready for immediate use Envair Mobile Isolator Envair Technology is a UK-based manufacturer specializing in clean air and containment solutions for the healthcare, biotechnology, and pharmaceutical industries. Their product range includes a variety of isolators designed to provide controlled environments for handling hazardous substances, ensuring both operator and product safety. Applications Envair isolators are widely used in a variety of applications including Hospital Pharmacies: For preparation of TPN, CIVAS, and aseptic dispensing. Pharmaceutical Laboratories: Handling of HPAPIs and sterile compounding. Sterility Testing: Secure, controlled environments for product testing. R&D Facilities: Safe containment during experimental or early-stage developmen Key Features of Envair Isolators Positive and Negative Pressure Models: Envair offers both positive pressure isolators protect the product from contamination and negative pressure isolators to protect the operator from hazardous substances Compliance with GMP Standards: Many Envair isolators meet EU GMP Grade A and ISO 5 classifications, ensuring sterile, controlled environments. Customizable Designs: Envair provides bespoke solutions tailored to specific client needs, including unique dimensions and technical requirements. Advanced Containment Technology: Isolators are equipped with automated pressure decay leak tests, electromagnetic interlocks for transfer chambers, and integrated decontamination systems. User-Friendly Controls: Most units include intuitive touchscreen interfaces and PLC-based systems for simple and efficient operation. Growing Need for Containment with HPAPIs Demand for personalised medicines containing High Potent Active Pharmaceutical Ingredients (HPAPIs)—particularly in newer super-potent oncology, cardiovascular, and diabetes treatments—is increasing rapidly. These medicines often require shorter turnaround times, forcing pharmaceutical process manufacturers to develop faster, more agile workflows. In such high-risk, high-value settings, a GMP-compliant environment is not optional—it’s critical. It’s easy to overlook the fact that the people developing, manufacturing, and dispensing these complex drugs are at risk of exposure to harmful, sometimes lethal, compounds. Their safety is paramount, given the essential role they play in maintaining a reliable supply of advanced therapeutics. Expertise in HPAPI Handling for CMOs & CDMOs Envair has specialist expertise in helping Contract Manufacturing Organisations (CMOs) and Contract Development and Manufacturing Organisations (CDMOs) safely handle HPAPIs—even within existing non-contained facilities. Their isolator systems are designed, manufactured, and installed to meet rigorous containment performance levels below 1μg/m³ (OEB 5). Each system is custom-engineered for the specific site and process step—whether it’s weighing, mixing, milling, spray drying, or packaging. Applications Hospital Pharmacies: For preparation of TPN, CIVAS, and aseptic dispensing. Gsdpfxsxv Dhbe Ah Hjui Pharmaceutical Laboratories: Handling of HPAPIs and sterile compounding. Sterility Testing: Secure, controlled environments for product testing. R&D Facilities: Safe containment during experimental or early-stage development

Condition: used, This listing is for the Jenway 370 pH Meter The unit is in full working condition and is ready for immediate use Key Features: Simple Operation: The Model 370 provides easy-to-use functionality, perfect for users who need consistent and reliable pH readings without complex setup. Its single pH input and manual temperature compensation make it quick to calibrate and use. Advanced Memory Function: The Model 370 includes a 32-reading non-volatile memory, which allows users to store measurements for later review or record-keeping. This feature is particularly valuable for users in need of precise documentation and traceability. Manual Temperature Compensation: Unlike automatic temperature compensation (ATC) in more advanced models, the Model 370 requires manual adjustment, making it ideal for users who are working in environments where temperature variations are minimal or predictable. Wide Measurement Range: The pH range of -2.00 to 16.00 and mV range of -1999 to +1999 offer versatility in various applications, while the temperature range of -10°C to +105°C (14°F to 221°F) ensures suitability for both laboratory and field conditions. Gusdpfx Ajxv Aycjh Hei Accuracy: The Model 370 is designed to provide accurate results, with ±0.02 pH, ±1 mV, and ±0.5°C tolerance, making it reliable for scientific measurements and testing. Durability and Design: With an IP65-rated splashproof design, the Model 370 is durable enough for use in harsh environments, offering protection against dust and water splashes

Condition: used, This listing is for a Watson Marlow 604S Peristaltic Pump The unit is in full working condition and is ready for immediate release. The Watson‑Marlow 604S is a laboratory/industrial peristaltic (tube) pump, designed for dosing, metering, and fluid transfer tasks where the fluid must remain isolated from moving parts. It’s part of the “600” series of Watson‑Marlow pumps and is intended for relatively high flow rates in a controlled environment (e.g. labs, pilot plant, certain chemical or processing setups). Because it’s a peristaltic pump, the fluid only contacts the inner wall of a flexible tube, which makes it suitable for shear‑sensitive, corrosive or potentially particulated fluids, without contaminating the pump internals Strengths Clean & Isolated Flow: Because only the inner surface of the tubing contacts the fluid, there is no risk of cross‑contamination or fluid leaking into mechanical parts. Good Flow Capacity: With a relatively high maximum flow (≈ 11 L/min), it can handle moderate bulk transfer in addition to dosing. Guodpfjxv Ad Ujx Ah Hsi Robust Housing: The IP55 rating makes it resistant to dust ingress and water spray, which is beneficial in industrial or lab environments with splashes. Variable speed control: The broad control range allows fine tuning of flow. Relative simplicity of maintenance: Replacing tubing is straightforward compared to more complicated pump mechanisms (valves, seals, diaphragms, etc.).

Condition: used, This listing is for a Stuart Scientific SB301 Magnetic Stirrer Gusdpfx Ahoxv Ac Ds Hei The unit is in full working condition and is ready for immediate release. Overview & Intended Use The SB301 is a robust, heavy‑duty magnetic stirring device designed for laboratory applications where relatively large volumes of liquid (up to around 30 L of water-equivalent) need to be stirred. It is used in chemistry, biology, environmental labs, or anywhere you need continuous stirring without introducing mechanical agitation (i.e. no overhead stirrer, no impeller). It emphasizes stable speed control, durability, and strong magnetic coupling (i.e. strong magnetic fields to drive the stir bar reliably even under load