Laboratory Electric mixer Series Manufacturer

Our Laboratory Electric mixer Series manufacturer work covers electric cantilever mixers built for repeatable mixing, dispersing and dissolving at bench scale. Shanghai Qiujing Biochemical Reagent & Instrument Co., Ltd. has been producing laboratory instruments since its brand was established in 1988, operates under a CE and ISO 13485 quality system, and runs this series as an OEM/ODM program for laboratories, distributors and project teams. The mixers sit inside our wider laboratory instruments portfolio, so mixing, centrifuging, pipetting and consumables can be sourced against one specification and one delivery schedule.

The cantilever drive and what it does in the vessel

An electric cantilever mixer drives a mixing blade through a motor-driven cantilever shaft. Rotation creates shear at the blade tip and circulatory flow through the bulk liquid — the action that carries a powder into solution, breaks pigment agglomerates in a paste, or keeps a resin and solvent system uniform while a sample is drawn.

That geometry suits small-batch work. Where a production disperser needs a large vessel and a long changeover, a cantilever mixer applies comparable mixing action to a bench-scale batch and holds the same speed profile from one batch to the next, which is what makes coatings, ink and formulation samples comparable over time.

Our range at a glance

Both lines carry full technical entries: Qiujing Electric Cantilever Mixer QJ-EM-60/120/200/60SH 120SH/200SH and Qiujing Electric Cantilever Mixer QJ-EM-150FR.

Matching mixer configuration to the process

Configuration is settled by the working point — vessel, medium and target result — not by drive size alone. Two laboratories can run the same method in different containers and need different shafts, blades and speed profiles.

Shafts, impellers and wetted materials

The parts that touch the sample decide whether a mixer survives a formulation lab. We fix the wetted assembly against the media list you provide, then confirm cleaning compatibility before the build is released.

• Shaft and impeller grade selected against the solvent, pigment and additive list for the method.
• Coated or non-metallic impeller arrangements reviewed where a bare metal surface would react with the medium or risk contamination.
• Removable blade and shaft design so wetted parts can be cleaned between batches without dismantling the drive.
• Autoclave or disinfection suitability confirmed per assembly, since bearings and coatings set the limit rather than the stainless parts alone.

Blade type follows the task: a disc-style impeller for dispersing powders into liquid, a propeller or paddle for bulk circulation and dissolving, and a blade matched to the vessel base where solids must not settle.

Speed control, program steps and reproducibility

The QJ-EM-60/120/200 family uses six-segment program control with high speed accuracy, which lets a method be split into steps instead of one fixed setting. Adding pigment at low speed and then dispersing at high speed becomes a stored routine rather than an operator judgement.

• Segmented programs for powder addition, wet-out, dispersion and final homogenisation.
• Digital speed setting so the same method can be repeated across shifts and sites.
• Microprocessor control on the QJ-EM-150FR for fine adjustment where small speed changes affect the result.
• Motor and drive protection sized to the load, with the working range agreed before shipment.

Installation, utilities and operator safety

Installation is straightforward once the bench layout is agreed: a stable flat surface, adequate headroom for lifting the vessel, and clearance for the shaft to be positioned before the drive is started. Supply voltage and plug standard follow the destination market and are confirmed on the order.

• Vessel location or clamping arranged so the blade cannot contact the container wall.
• Shaft runout checked after mounting; a bent shaft shows up as vibration and uneven mixing long before it damages the bearing.
• Cable routing kept clear of the vessel and away from spill paths.
• Splash exposure reduced by correct immersion depth and a suitable working speed.
• Routine maintenance covers chuck or coupling condition, bearing noise, blade seating and power cable integrity.
• Spare shafts and impellers recommended for laboratories that run several product families or aggressive media.

Quality control and acceptance

Our quality management system holds CE and ISO 13485 certification, and covers incoming material inspection, in-process testing and finished-product inspection in our own test laboratory. Each unit is checked for speed control behaviour and mechanical assembly before packing.

On arrival, acceptance normally confirms the model and voltage match the order, the shaft runs true, the blade seats correctly, and each program segment engages and holds. We support this step with operation guidance and troubleshooting from the same technical team that configured the mixer.

Customization, documentation and delivery

OEM and ODM projects are handled from your drawings, samples or performance target — specification adjustment, appearance and packaging included. Documentation covers operation guidance, product consultation and after-sales troubleshooting for overseas partners. Confirmed production orders follow our standard quoted lead time of 10 working days, with export packaging and global shipment arranged for the destination.

Information we use to configure your solution

• Working volume range and vessel diameter, height and base profile.
• Medium description: viscosity, solids content, solvents and additives.
• Target result — dissolution, dispersion, suspension or homogenisation — with the acceptance criterion.
• Required speed range, number of program steps and hold times.
• Cleaning routine and any autoclave or disinfection requirement.
• Supply voltage, plug standard and destination market.
• Bench or stand arrangement, clamp size and available headroom.
• Order quantity, OEM branding, packaging and documentation requirements.

Frequently asked questions

What distinguishes the QJ-EM-60/120/200/60SH/120SH/200SH from the QJ-EM-150FR?

The first group is our program-controlled cantilever platform with six-segment speed control and high speed accuracy, offered in several model and shaft designations. The QJ-EM-150FR uses microprocessor-based control for finer speed adjustment. Which one suits a method depends on the vessel, medium and how closely the speed has to be held.

Can the mixer handle coatings, inks and pigment pastes?

Yes. Mixing, dispersing and dissolving of small batches in coatings and inks is the core application of this series. We size the blade and shaft for the paste viscosity and the wetting behaviour of the pigment, and set the program segments around your addition sequence.

Which shaft and impeller materials can you supply?

Wetted parts are selected against your chemical list, with coated or non-metallic options reviewed where bare metal is unsuitable. We confirm the final combination — shaft, blade and coupling — in writing before production.

Do you support OEM/ODM orders and custom supply voltages?

We provide OEM and ODM customization from drawings, samples or performance targets, including specification adjustment, appearance and packaging. Supply voltage and plug standard are confirmed against the destination market for each order.

What is the lead time and how are the mixers shipped?

Our standard quoted lead time for confirmed production orders is 10 working days. Units are packed for export and shipped globally, with after-sales support covering operation guidance and troubleshooting for overseas customers.

What do you need from us to prepare a quotation?

Working volume and vessel dimensions, medium and viscosity, the target mixing result, required speed profile, chemical and cleaning constraints, supply voltage, mounting arrangement, quantity and any OEM branding or packaging requirement. With those details we return a configuration and quotation that matches the working point.