Analog Magnetic Hotplate Stirrer

• LH-SM-S Analog Dial High-Temperature Magnetic Hotplate Stirrer equipped with 10W high-torque explosion-proof brushless DC motor, max stirring volume up to 20L. It fits chemical pilot reactions, large-volume wet digestion, biological fermentation and university teaching labs. Mechanical analog dials for speed & temperature deliver simple, stable operation for cost-effective routine high-temperature stirring workflows.
• Original factory core specs: Φ135mm (5 inch) round work plate with stainless steel substrate & ceramic coating; 10W high-power explosion-proof brushless DC motor, total unit power 530W, heating power 500W; max stirring volume 20L water, compatible with magnetic stir bars up to 80mm length; speed range 0–1500rpm, mechanical scale dials for speed & temperature indication; heating range Room Temp – 340℃; auto overheat cut-off at 420℃; no external PT100 temperature sensor, no residual heat HOT warning, no RS232 data connector, no timer function; IP21 dust protection; dual wide voltage 100-120V/200-240V, universal 50/60Hz.
• Operating environment: permissible ambient temperature 5–40℃, relative humidity ≤80%RH.
• Dimension 160×280×100mm, net weight 2.8Kg. High torque design handles large-volume & high-viscosity fluids; simple analog knob control ideal for bulk procurement of basic labs.
• Key advantages: 10W high-torque stirring motor, 20L ultra-large stirring load; stable heating up to 340℃; intuitive mechanical analog dial control; spark-free explosion-proof maintenance-free motor; chemical-resistant stainless steel ceramic plate; 420℃ overheat safety circuit; IP21 dust-proof housing; universal dual voltage for global markets; wide range of optional lab accessories; cost-efficient entry-level high-temperature stirrer.

• Product positioning: Cost-effective analog knob large-volume high-temperature magnetic stirrer targeting university teaching, industrial basic testing and small chemical pilot labs. It eliminates digital LCD cost with affordable pricing, ideal for bulk unified procurement to meet basic 20L large-volume high-temperature stirring demands.
• 10W high-torque brushless motor delivers far stronger power than standard low-power analog models, maintains homogeneous mixing for full 20L aqueous load and high-viscosity fluids; matched with 80mm extended stir bars to eliminate sedimentation & stratification at large beaker bottom.
• Wide heating range up to 340℃ with continuous heating power adjustment via mechanical knob, stably completing reflux, digestion and basic synthesis workflows for scenarios without ultra-precise digital temperature requirements; extremely intuitive operation suitable for students and entry-level lab staff.
• Pure mechanical analog control structure without delicate electronic screen, resistant to damage in dusty & humid environments with low failure rate and minimal long-term maintenance cost.
• Stainless steel ceramic composite round plate provides superior chemical resistance against acid, alkali and organic solvent spills; smooth dense surface enables easy cleaning, no discoloration or aging under prolonged high-temperature operation.
• Built-in independent overheat safety circuit triggers mandatory heating cut-off at 420℃ extreme threshold; triple-layer safeguards paired with IP21 dust-proof housing and spark-free explosion-proof motor support unattended overnight basic digestion experiments.
• Universal dual wide voltage design works directly with 100–120V EU/US and 200–240V Asian power grids, one single model covers all mainstream overseas basic lab clients to reduce distributor stock SKUs.
• Full range of optional experimental accessories including support stands and clamps enable fast setup of simple constant-temperature reflux reaction systems for one-stop basic teaching & routine synthesis setup demands.

• Lab with limited budget for bulk procurement for teaching & routine basic digestion/synthesis, no demand for digital LCD display, prioritize stable durable low-cost equipment:
  Select LH-SM-S analog knob model with cost reduction from eliminated electronic screen, 10W high-power motor supporting 20L large-volume stirring and 340℃ heating; low-failure mechanical construction perfect for bulk orders from universities and small testing stations.
• Single batch processing of 10–20L large-volume fluids for small chemical pilot tests, standard low-torque analog stirrers cause stratification & sedimentation:
  This unit features 10W high-torque motor and max 20L stirring load compatible with 80mm long stir bars, delivering uniform mixing without sedimentation for pilot-scale basic batch reactions.
• Thermal processes require temperature above 300℃, stable up to 340℃ for high-boiling solvent reflux and basic mineral thermal digestion:
  Consistent heating output up to 340℃ with continuous mechanical knob temperature adjustment, ideal for all basic mid & high-temperature synthesis and digestion workflows.
• Frequent experiments with low-boiling flammable organic solvents, fire safety concerns, unattended overnight basic operation required:
  Spark-free explosion-proof brushless motor paired with independent 420℃ overheat circuit and IP21 multi-layer dust protection ensures reliable all-night running.
• Dusty & high-humidity lab environment, avoid frequent maintenance of delicate digital LCD screen equipment:
  Pure mechanical analog design without LCD display withstands dust & humidity, far lower long-term failure rate than digital models to cut after-sales repair cost.
• Bulk export to multi-region overseas markets covering both 110V EU/US and 220V Asia grids, unified single model to simplify inventory stock:
  Universal dual wide voltage 100-120V/200-240V fits all global power grids without separate voltage stock versions.
• Only basic reflux & digestion required, no advanced functions such as PC data communication or external temperature probe needed:
  This model omits premium features including RS232, PT1000 sensor, timer and residual heat warning, focusing on core stirring & heating for superior cost performance.

• Standard factory package includes LH-SM-S analog knob large-volume high-temperature magnetic hotplate stirrer main unit, power cord and printed English operation manual. 20L large-volume high-temperature basic stirring experiments can be performed immediately after unboxing without extra basic accessories.
• OEM private branding customization service is available for bulk orders to create exclusive brand visuals for lab instrument independent online stores and overseas university & small chemical industry exhibition marketing channels.
• Thick shockproof separate carton fully lined with high-density foam buffer withstands long-distance sea & air freight vibration and compression, preventing ceramic plate scratch impact and internal high-power motor/heating component damage.
• In-stock orders ship within 3–10 working days. Goods will be packed and dispatched uniformly after model confirmation to shorten lead time for overseas universities, small chemical plants and instrument distributors.
• Multiple cross-border logistics options including sea freight, air freight and international courier are offered to match cost-effective transport solutions based on order volume and requested arrival time.

Selling Units

Single item

Package size perbatch

47*25*24cm

Gross weight perbatch

3.500kg

• Contact customer service to obtain complete original electronic documents for cost-effective equipment comparison, independent website listing, overseas university exhibition promotion and customer technical consultation for basic experiments.
• Official electronic files for this product include full main unit technical specs, English operation manual, analog model safety guidelines, dimension drawings and product brochures. All documents comply with official factory standards with verifiable data.
• Enterprise promotional materials are available, including company brand brochure, real workshop photos and factory introduction files.
• We provide full-series supporting resources for all stirring equipment, digital & analog hotplate stirrers and heating mantle accessories, supporting unified store operation and multi-category product marketing.

• If you need to purchase LH-SM-S 20L large-volume analog knob 340℃ magnetic hotplate stirrer in bulk for university teaching experiments, small chemical pilot tests, basic batch environmental digestion, industrial testing labs or laboratory instrument distribution, you may inquire for official detailed quotations with zero hidden fees. Larger order volumes enjoy more favorable unit prices, ideal for centralized procurement of overseas universities, small chemical manufacturers and large stock preparation by distributors.
• OEM private branding customization is supported for bulk orders. We assign dedicated one-on-one account managers to assist full-cycle coordination including price calculation, technical parameter verification, factory quality control, lead time scheduling and complete branding customization negotiation.
• You can reach us via email, WhatsApp or website message. Please leave notes of full product model and order quantity. A full formal quotation sheet will be sent to you within 24 hours, covering unit price, tiered volume discount, production lead time and full logistics solution to resolve all your procurement questions in one stop.