The following specifications describe a batch‑type distillation unit for recovering waste organic solvents. Six LPA series models are listed below. Each model shares the same heating range and recovery rate. Volume and power requirements vary by size.

Technical Specifications

• Product line: LPA Series Solvent Recovery Unit (batch‑type distillation)

• Manufacturer: Henan MASTER SCIENCE Industry Co., Ltd

• Model numbers: MSLPA‑20SWISS, MSLPA‑40SWISS, MSLPA‑60SWISS, MSLPA‑90SWISS, MSLPA‑125SWISS, MSLPA‑250SWISS

• Total volume options: 25 L, 60 L, 80 L, 120 L, 150 L, 320 L

• Charging volume options: 20 L, 40 L, 60 L, 90 L, 125 L, 250 L

• Recovery time per batch: 2 hours (LPA‑20) up to 5.5 hours (LPA‑250)

• Heating temperature range: room temperature (RT) to 210°C across all models

• Cooling method: air cooling on LPA‑20; air or water cooling on all larger models

• Ambient operating temperature: 5°C to 30°C

• Charging method: manual charging (all models)

• Discharging method: dumping (all models)

• Recovery rate: ≥95% across all models

• Power supply: 220V/50Hz (LPA‑20); 220V/380V/50Hz (LPA‑40, LPA‑60); 3P/380V/50Hz (LPA‑90, LPA‑125, LPA‑250)

• Dimensions (L × W × H): 920×730×1350 (LPA‑20); 825×638×1280 (LPA‑40); 1160×820×1480 (LPA‑60); 1270×900×1420 (LPA‑90); 1630×950×1660 (LPA‑125); 2100×1130×1950 (LPA‑250) mm

• Net weight: 100 kg (LPA‑20); 150 kg (LPA‑40); 160 kg (LPA‑60); 200 kg (LPA‑90); 260 kg (LPA‑125); 520 kg (LPA‑250)

• Product name on listing: Solvent recycle machine, paint production line solvent recovery unit

• Certification: CE

• Warranty: 1 year

Filtration & process specifications:

• Construction: stainless steel body, double‑layer structure, indirect heating

• Temperature control: precise 32‑stage control, digital display of heating and steam recovery time

• Control system: intelligent PID and PLC digital control system

• Control features: automatic digital display, multi‑program control (different solvents can use different preset programs)

• Operation: automated, does not require dedicated supervision

• Safety features: explosion‑proof design for entire machine and parts

• Sealing: proprietary molded sealing ring prevents solvent gas leakage

• Control box: specially designed, safety parameters can be set without opening the box

• Recyclable solvents: diluents, EA (ethyl acetate), CH2Cl2 (dichloromethane), xylene, and most organic solvents used for cleaning

Six ways this machine improves solvent recovery operations

The features listed above translate directly into measurable gains for any laboratory or small‑scale production facility. Each point below connects a specification to a practical outcome. No bold or italic formatting is used in this section.

Reduced solvent purchasing costs – A recovery rate of at least 95% means a laboratory consuming 100 litres of dichloromethane per week can recover and reuse 95 litres. Over a year, the machine pays for itself multiple times. The LPA‑250 model processes 250 litres per batch, turning waste solvent into reusable material.

Shorter processing times – The LPA‑20 model completes a 20‑litre batch in approximately two hours. The LPA‑250 processes 250 litres in approximately five and a half hours. For comparison, simple evaporation or disposal methods take days or require third‑party services. A laboratory can run one batch before lunch and have clean solvent ready by mid‑afternoon.

Safe operation with flammable solvents – Many organic solvents are highly flammable. The machine and all its parts adopt explosion‑proof safety design. The specially designed control box allows parameter changes without opening the enclosure, keeping electrical components isolated from solvent vapours. The proprietary sealing ring prevents leaks. Laboratories handling acetone, ethyl acetate, or xylene can run this equipment without installing separate explosion‑rated rooms.

Precise temperature control for different solvent types – Different solvents require different boiling points. The 32‑stage temperature control system allows operators to match heating profiles to each solvent. Dichloromethane (boiling point approximately 40°C) and xylene (approximately 140°C) use different programs. The multi‑program control stores settings for each solvent, so operators do not need to recalculate temperatures for each batch.

Low operator supervision – The PID and PLC digital control system runs automated production. Once a program is loaded, the machine heats, distills, cools, and shuts down without manual intervention. A researcher can start a batch at 9 AM, work on other tasks, and return at 12 PM to collect recovered solvent. No dedicated oversight is required.

Easy cleaning and maintenance – The all‑stainless steel body resists corrosion from organic solvents and cleaning agents. The double‑layer indirect heating design keeps heating elements separate from the solvent, so residue does not bake onto the heating surface. The dump discharge method empties the residue quickly. The entire unit cleans with standard laboratory wipes and compatible solvents.

Common frustrations in solvent recovery – and how this unit solves them

Pain point: Explosion hazards when distilling low‑flash‑point solvents.
A laboratory that distills ethyl acetate (flash point -4°C) or acetone (flash point -17°C) faces real risks. Standard rotary evaporators or open boiling systems can ignite. The MASTER SCIENCE LPA Series explosion‑proof solvent recovery unit (a CE‑certified chemical solvent recovery machine) features explosion‑proof design on the entire machine and all parts. The control box is specially designed so safety parameters can be set without opening it. The sealing ring is produced by independent moulding to ensure solvent gas does not leak. This unit meets the safety requirements for volatile organic solvent recovery.

Pain point: Inconsistent recovery quality due to unstable heating.
Some stills overheat solvents, causing degradation or polymerisation. Others underheat, leaving usable solvent in the waste. The same MASTER SCIENCE LPA Series explosion‑proof solvent recovery unit (with 32‑stage precise temperature control) uses an independently developed PID and PLC digital control system. The system automatically displays and controls the heating temperature. Multi‑program controls can be set for different solvents. A batch of xylene runs at the correct 140°C profile. A batch of dichloromethane runs at a much lower 40°C profile. Recovered solvent quality matches fresh solvent for most applications.

Pain point: Long recovery times that tie up lab equipment.
A laboratory using a rotary evaporator to recover 20 litres of ethyl acetate might run that evaporator for two full days. The MASTER SCIENCE LPA Series explosion‑proof solvent recovery unit (a dedicated chemical solvent recovery machine) completes a 20‑litre batch in about two hours. The LPA‑250 completes a 250‑litre batch in about five and a half hours. A dedicated unit does not block the rotary evaporator for other critical work. Recovery happens in parallel with other laboratory activities.

Pain point: Solvent vapour leaks that harm staff health.
Chronic exposure to organic solvent vapours causes headaches, dizziness, and long‑term health effects. The MASTER SCIENCE LPA Series explosion‑proof solvent recovery unit (a sealed chemical solvent recovery machine) uses independently moulded sealing rings that prevent solvent gas from leaking. The double‑layer indirect heating design maintains a sealed system throughout the distillation cycle. The reinforced barrel cover design adds another layer of leak prevention. Staff do not breathe solvent vapours during normal operation.

Pain point: No traceability of recovery parameters for compliance.
Regulated laboratories need records of temperature, time, and batch numbers for each recovery run. The MASTER SCIENCE LPA Series explosion‑proof solvent recovery unit (with digital display and multi‑program control) shows heating temperature and steam recovery time on a digital display. Operators log these values for each batch. The multi‑program control stores settings for different solvents, providing a repeatable, documented process for quality assurance. No guesswork, no unwritten procedures.

Which laboratories benefit most from this recovery unit

Analytical chemistry laboratories running gas chromatography or high‑performance liquid chromatography generate significant volumes of waste mobile phase solvents. The LPA‑20 or LPA‑40 models fit on a bench or under a fume hood. Recovered ethyl acetate, hexane, or methanol can be reused for non‑critical washes or even for some analytical applications after testing.

Pharmaceutical research and development labs using dichloromethane, ethyl acetate, or tetrahydrofuran for extractions and purifications will find the LPA‑40 or LPA‑60 models appropriate for typical batch sizes. The ≥95% recovery rate reduces solvent disposal costs and purchase frequency.

Chemical synthesis laboratories running pilot‑scale reactions of up to 250 litres will use the LPA‑125 or LPA‑250 models. Recovered xylene, toluene, or dimethylformamide can be reused for subsequent reactions or for cleaning glassware.

Paint and coating testing laboratories using mineral spirits, xylene, or other paint thinners will benefit from the air‑cooled or water‑cooled options. The LPA‑60 or LPA‑80 models match typical batch sizes for paint formulation labs.

University teaching laboratories running multiple undergraduate organic chemistry sections each week can collect and recover waste dichloromethane, ethyl acetate, and hexanes. A single LPA‑40 unit processes a week's worth of solvent waste from 80 students in one afternoon.

Physical configuration and daily operation

The unit consists of a stainless steel distilling tank (double‑layer, indirect heating), a condensing system (air‑cooled on LPA‑20; air or water‑cooled on larger models), and a PLC control panel with digital display. The charging port is at the top. Waste solvent is poured in manually. The operator selects the pre‑programmed temperature profile for the solvent type. The machine heats the solvent to its boiling point, vapour rises into the condenser, and recovered liquid solvent flows into a collection vessel. Residue remains in the tank and is removed via the dumping mechanism.

The LPA‑20 fits on a standard laboratory bench (920 × 730 mm footprint). Larger models require a dedicated floor space. The maximum weight of the LPA‑250 is 520 kg, so a reinforced floor is recommended for the largest unit.

The control panel is separate from the heating zone. Operators set parameters without opening the explosion‑proof enclosure. The digital display shows current temperature, elapsed time, and any alarm conditions.

Available models at a glance

All models share the same heating temperature range (RT to 210°C), recovery rate (≥95%), ambient operating range (5°C to 30°C), and manual charging/dumping method.

Ordering and delivery information

The unit ships in a wooden box, with delivery within 3 to 15 working days after order confirmation. Minimum order quantity is one unit. Payment terms include L/C and T/T. The supplier maintains a production capacity of 60 units per month.

Each unit includes:

• Stainless steel distilling tank with double‑layer indirect heating

• Condenser (air‑cooled standard; water‑cooling optional on models larger than LPA‑20)

• PLC digital control panel with PID controller

• Explosion‑proof control box

• Sealing ring (proprietary moulded design)

• Dumping mechanism for residue removal

• User manual and quick start guide

• CE certification documentation

Optional accessories (inquire with supplier):

• Water cooling kit (for models that support it)

• Additional sealing rings

• Replacement heating elements

• Collection vessels

Request a quotation or technical consultation

For pricing, lead time, or a technical datasheet for the solvent recovery unit, contact us. Specify the required model and the types of solvents you intend to recover when asking for a quote. Volume discounts may apply for multiple units or for complete laboratory solvent management systems.