Rotary evaporation has long been a staple in laboratories for removing solvents from samples efficiently. However, as technology advances and the demand for higher throughput and more efficient processes increases, alternative methods are becoming more attractive. One such alternative is <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products?category=338">Organomation's S-EVAP evaporators</a>. For laboratories interested in processing several samples simultaneously, the S-EVAP offers significant advantages over multiple rotary evaporators.<h3>Understanding Rotary Evaporation</h3>Rotary evaporation is a technique widely used in chemical and biochemical labs to remove solvents from samples by applying heat and reducing pressure to induce evaporation. The process involves a rotating flask, which increases the surface area for evaporation, making it efficient for solvent removal. Despite its effectiveness, rotary evaporation has limitations, especially when dealing with high-throughput requirements or multiple samples simultaneously.<h3>Criteria for Choosing an Alternative</h3>When selecting an alternative to rotary evaporation, several factors need to be considered:<ul><li>Efficiency: How quickly and effectively can the alternative remove solvents?</li><li>Cost-effectiveness: What is the initial investment and operating cost?</li><li>Ease of use: How user-friendly is the equipment?</li><li>Applicability: Can the alternative handle a variety of solvents and sample types?</li><li>Scalability: Is the method suitable for processing multiple samples simultaneously?</li></ul><h3>Alternatives to Rotary Evaporation</h3><h4>1. Organomation's S-EVAP Evaporators</h4>Organomation's S-EVAP evaporators, available in<a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/1904"> Kuderna-Danish (KD)</a> and<a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/1905"> round-bottom (RB)</a> flask models, are designed for laboratories requiring high throughput and efficient solvent removal.&nbsp;<ul><li>S-EVAP KD is available in 8 or 10 position models and can handle sample sizes up to 500 mL</li><li>S-EVAP RB models also offer 8 or 10 positions with capacities up to 250 mL per sample</li></ul>The S-EVAP system is tailored for general evaporation and concentration of analytical or environmental samples using various glassware configurations to meet specific method requirements under controlled and reproducible conditions.This system features rapid solvent evaporation with solvent vapor recovery, achieving solvent recoveries exceeding 96% by volume under ideal conditions.&nbsp;It can operate with cold tap water or a recirculating chiller system, ensuring efficient cooling. The digital controlled water bath provides even and uniform heating without scorching the final samples.&nbsp;The parallel water manifold system ensures even cooling water distribution to each condenser, while the rotary water manifold allows unlimited instrument rotation for easy front loading without condenser tubing entanglement.<h5>Advantages of S-EVAP Over Rotary Evaporation:</h5><ul><li>Higher Throughput: The S-EVAP can process multiple samples simultaneously, significantly increasing throughput compared to using several rotary evaporators.</li><li>Cost-Effectiveness: Although the initial investment may be higher than a single rotary evaporator, the S-EVAP's ability to handle multiple samples at once reduces the need for additional equipment. Lower maintenance costs and reduced need for additional space and infrastructure.</li><li>Ease of Use: User-friendly design with straightforward controls and easy maintenance. Reduced handling time compared to managing multiple rotary evaporators, allowing technicians to focus on other tasks.</li><li>Consistency and Precision: Uniform evaporation conditions ensure consistent results across all samples. Precise control over temperature allows for tailored evaporation conditions for different sample types.</li><li>Space Efficiency: A single S-EVAP unit occupies less space compared to multiple rotary evaporators, making it ideal for labs with limited bench space.</li></ul><h5>Integration in EPA Method 1699</h5>Rotary Evaporator Usage:<ul><li>Initial Solvent Reduction: Rotary evaporators are used first to remove bulk solvent from the sample extract. This step efficiently reduces the volume of the extract to a manageable level under reduced pressure, ensuring that the majority of the solvent is removed without significant loss of analytes.</li><li>Controlled Conditions: The rotary evaporator's ability to control temperature and vacuum precisely helps in handling large initial volumes and reducing them quickly.</li></ul>S-EVAP Evaporator Usage:<ul><li>Further Concentration: After the rotary evaporation step, the concentrated extract is transferred to the S-EVAP system. The S-EVAP evaporators, including the <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/1904">S-EVAP-KD</a> and <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/products/1905">S-EVAP-RB</a> models, are designed to handle smaller volumes and provide a final concentration of the sample.</li><li>Solvent Recovery: The S-EVAP systems offer efficient solvent recovery, with the S-EVAP-RB capable of achieving solvent recoveries exceeding 96% by volume under ideal conditions. This high recovery rate is crucial for environmental and analytical labs that aim to minimize solvent waste and ensure consistent results.</li><li>Even Heating and Cooling: The S-EVAP-RB features a digital controlled water bath for uniform heating, preventing scalding of the final samples. Additionally, the parallel water manifold system ensures even cooling to each condenser, enhancing the efficiency and reproducibility of the evaporation process.</li></ul>Benefits of Tandem Use<ul><li>Enhanced Efficiency: Using both systems in tandem allows for the initial large volume reduction by the rotary evaporator, followed by precise final concentration using the S-EVAP. This combination maximizes throughput and ensures high-quality results.</li><li>Cost and Space Efficiency: The rotary evaporator handles the bulk of the solvent reduction, reducing the strain on the S-EVAP system. This distribution of workload helps in maintaining the equipment and optimizing laboratory space.</li><li>Method Compliance: Following this tandem approach ensures compliance with EPA Method 1699, which outlines specific procedures for pesticide analysis in various environmental samples.</li></ul>Organomation's S-EVAP evaporators, when used in conjunction with rotary evaporators, provide an efficient and reliable solution for laboratories performing high-throughput solvent evaporation tasks, such as those required by EPA Method 1699. This tandem use ensures precise control over the evaporation process, high solvent recovery rates, and consistent sample preparation, making it an ideal approach for environmental and analytical laboratories.<h4>2. Buchi's Syncore Evaporators</h4>Buchi's Syncore evaporators are advanced evaporation systems designed to provide high throughput and efficiency. They use parallel evaporation technology, allowing simultaneous processing of multiple samples under controlled conditions.<ul><li>Applications: Drug discovery, natural product extraction and chemical synthesis</li><li>Advantages: High efficiency with parallel evaporation capabilities, advanced safety features and precise control over evaporation parameters</li><li>Limitations: Potential cost considerations and specific application limitations</li></ul><a target="_blank" rel="noopener noreferrer" href="https://explore.organomation.com/s-evap-rb-vs-buchi-syncore-download">Download our S-EVAP-RB vs Buchi Syncore comparison with pricing!</a><h4>3. Freeze Drying (Lyophilization)</h4>Freeze drying, also known as lyophilization, is a dehydration process used to preserve perishable materials or make them more convenient for transport. The process involves three main stages: freezing, primary drying (sublimation), and secondary drying (desorption).<ul><li>Applications: Pharmaceuticals, food industry, biological samples.</li><li>Advantages: Long-term stability of dried products.</li><li>Limitations: High cost and time-consuming process.</li></ul>For a more in-depth review, please visit our piece on <a target="_blank" rel="noopener noreferrer" href="https://blog.organomation.com/blog/types-of-laboratory-evaporators">Types of Laboratory Evaporators</a>.<h4>4. Centrifugal Evaporation</h4>Centrifugal evaporation is a technique used to remove solvents from samples by combining centrifugal force, vacuum, and heat. This method is particularly effective for drying samples rapidly and efficiently, making it ideal for high-throughput laboratories.<ul><li>Applications: Used for concentrating and drying biological samples, drug formulations, and other compounds that require gentle handling. Ideal for processing DNA, RNA, proteins, and other sensitive biomolecules.</li><li>Advantages: The combination of centrifugal force and vacuum significantly speeds up the evaporation process compared to traditional methods. Multiple samples can be processed simultaneously, making it suitable for high-volume laboratories.</li></ul>Limitations:<ul><li>Equipment Cost: High-quality centrifugal evaporators can be expensive to purchase and maintain.</li><li>Limited Sample Types: Not all sample types are suitable for centrifugal evaporation, particularly those that require very specific temperature or pressure conditions.</li><li>Technical Expertise: Requires trained personnel to operate the equipment and optimize conditions for different sample types.</li></ul><h4>5. Vacuum Distillation</h4>Vacuum distillation is a technique used to separate mixtures of liquids by utilizing reduced pressure, which lowers the boiling points of the components. This method is particularly useful for separating heat-sensitive compounds that might decompose at higher temperatures.<ul><li>Applications: Used to purify reaction products and separate mixtures in organic synthesis. Essential for refining crude oil into various fractions, such as gasoline, diesel, and lubricants.</li><li>Advantages: Achieves high levels of purity by effectively separating components based on their boiling points. Reduces the risk of thermal decomposition by operating at lower temperatures. Applicable to a wide range of substances, including complex mixtures and heat-sensitive materials.</li></ul>Limitations:<ul><li>Complex Setup: Requires specialized equipment and careful control of vacuum and temperature conditions.</li><li>High Cost: Initial investment and maintenance costs can be high.</li><li>Technical Skill: Operators need to be skilled in managing the distillation process to achieve optimal results.</li></ul><h4>6. Spray Drying</h4>Spray drying is a process used to convert liquid materials into dry powders by rapidly drying them with a hot gas. This technique is widely used in the food, pharmaceutical, and chemical industries for creating stable, shelf-stable powders.<ul><li>Applications: Used to produce powdered milk, coffee, eggs, and flavors. Employed in the production of powdered drugs and formulations.</li><li>Advantages: Efficiently converts liquids into dry powders in a short time. Allows precise control over the size and distribution of the powder particles.</li></ul>Limitations:<ul><li>High Energy Consumption: Requires significant energy to heat the drying gas.</li><li>Thermal Degradation: High temperatures can cause thermal degradation of sensitive compounds.</li><li>Complexity: Requires careful control of operating conditions to achieve desired product characteristics.</li></ul><h4>7. Simple Distillation</h4>Simple distillation is a basic method used to separate liquids with significantly different boiling points. It involves heating the mixture to vaporize the more volatile component, which is then condensed and collected.<ul><li>Applications: Used to purify solvents, water, and other liquids by removing impurities. Ideal for separating simple mixtures of two components with different boiling points.</li><li>Advantages: Easy to set up and operate with minimal equipment. Low initial investment and operating costs. Effective for separating mixtures with large differences in boiling points.</li></ul>Limitations:<ul><li>Limited Precision: Not suitable for separating complex mixtures or components with close boiling points.</li><li>Scalability Issues: Less efficient for large-scale industrial processes.</li><li>Thermal Degradation: Higher temperatures can cause degradation of heat-sensitive components.</li></ul><h4>8. Microwave-Assisted Evaporation</h4>Microwave-assisted evaporation is a technique that uses microwave energy to heat and evaporate solvents from samples. This method is efficient and rapid, making it suitable for various laboratory applications.<ul><li>Applications: Used to speed up reactions and solvent removal in organic synthesis. Employed for drying drug formulations and preparing samples for analysis.</li><li>Advantages: Microwaves heat samples quickly and uniformly, reducing evaporation time.</li></ul>Limitations:<ul><li>Equipment Cost: Microwave evaporators can be expensive to purchase and maintain.</li><li>Sample Compatibility: Not all samples are suitable for microwave heating, particularly those with low dielectric properties.</li><li>Safety Concerns: Requires careful handling to avoid overheating and potential hazards.</li></ul><h3>Conclusion</h3>For laboratories that need to process several samples simultaneously, Organomation's S-EVAP evaporators present a compelling alternative to rotary evaporation. By offering higher throughput, cost-effectiveness, ease of use, and space efficiency, the S-EVAP can streamline laboratory workflows and improve overall productivity. As technology continues to evolve, staying informed about the latest advancements in evaporation methods will ensure that labs can maintain optimal performance and efficiency.

Exploring Alternatives to Rotary Evaporation in Modern Laboratories

Wastewater treatment plants struggle every day with substances that don’t simply disappear from the water. The removal of nitrogen compounds is very important at these plants. If too much of these substances remains in the water, they harm rivers and the life within them. <a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/article/5403">Karel Havlíček </a>from CXI TUL was a co-investigator on the HYMNA project, which combined two well-known treatment technologies into a single system. And he added something to them that isn’t commonly used at treatment plants: nanofibers.The full name of the project is “Hybrid MBR-MBBR System Using Nanomaterials for Advanced Wastewater Treatment.” The acronym is HYMNA. “It sounds a bit grand,” laughs co-investigator Karel Havlíček from the Department of Environmental Protection Technology. But the goal was indeed grand. The water that flows out of a treatment plant isn’t always as clean as it could be. And that’s a problem worth solving.<h4>A Screen and Beads</h4>Behind the acronyms MBR and MBBR lie two technologies that treatment plants typically deploy separately. But Karel combined them into a single process and demonstrated that together they can work significantly better. He validated the combination in practice and used it to design a technology with a clear procedure, measurable results, and the potential for real-world application.The MBR functions as a fine screen. The membranes trap impurities, organic matter, and undissolved particles. But even then, the process isn’t complete—nitrogenous compounds still remain in the clarified water.To address this, Karel Havlíček and his partners implemented the second part of the technology: MBBR. Small plastic beads with holes and nanofibers inside move freely in the tank with the help of aeration. Microorganisms grow and live on the surface of the nanofibers, converting ammonia nitrogen into nitrates.Why does this matter? Ammoniacal nitrogen is toxic to fish; it damages their gills and, at higher concentrations, kills them. An excess of nitrogen triggers algae blooms, causing the water to turn green, depleting oxygen levels, and suffocating aquatic life.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/CXI_TUL_Kulicky_s_nanovlakennym_srdcem_Takhle_se_da_cistit_voda_lip_2_6559ff2373.jpg" alt="CXI TUL: Beads with a nanofiber core. This is a better way to purify water." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_CXI_TUL_Kulicky_s_nanovlakennym_srdcem_Takhle_se_da_cistit_voda_lip_2_6559ff2373.jpg 117w," sizes="100vw" width="768" height="1024"><h4>Beads with a Nanofiber Core</h4>The beads are no accident. Karel inserted nanofiber carriers—a fine fibrous material to which microorganisms quickly and firmly attach—into plastic bodies with holes. He had already proposed this concept in his dissertation.The path to the final design was not straightforward. Originally, it was a nanofiber layer. However, it gradually washed off the beads. They replaced it with yarn, which holds its shape. The result is a utility model for new biomass carriers.The main advantage is the speed of colonization. On conventional materials, colonization takes much longer. Microorganisms colonize the nanofibers quickly. This is crucial, especially where the water is hostile or toxic to them.Industrial wastewater is often so polluted that bacteria cannot survive on conventional carriers. On a nanofiber surface, however, they manage to attach themselves before the environment destroys them. The system then works even where other technologies would fail.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/CXI_TUL_Kulicky_s_nanovlakennym_srdcem_Takhle_se_da_cistit_voda_lip_3_290e60625f.jpg" alt="CXI TUL: Beads with a nanofiber core. This is a better way to purify water." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_CXI_TUL_Kulicky_s_nanovlakennym_srdcem_Takhle_se_da_cistit_voda_lip_3_290e60625f.jpg 117w," sizes="100vw" width="768" height="1024"><h4>A Surprising Number</h4>The most important factor was how the system would handle ammonia nitrogen. The team even tested extreme concentrations of up to eighty milligrams per liter. And that’s not just fine-tuning. That’s a stress test pushing the limits—one that could cripple or completely halt the activity of the purifying microorganisms.The system handled it. At the outflow, they measured less than one milligram per liter.“We achieved a level that even a conventional treatment plant often can’t handle,” Karel said, expressing his surprise.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/CXI_TUL_Kulicky_s_nanovlakennym_srdcem_Takhle_se_da_cistit_voda_lip_4_00a10f7915.jpg" alt="CXI TUL: Beads with a nanofiber core. This is a better way to purify water." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_CXI_TUL_Kulicky_s_nanovlakennym_srdcem_Takhle_se_da_cistit_voda_lip_4_00a10f7915.jpg 117w," sizes="100vw" width="768" height="1024"><h4>Container-Based Treatment Plant</h4>Combining the two technologies brought an added benefit. The system can function not only as a post-treatment unit following a standard treatment plant but also as a standalone modular treatment plant. No construction is needed; the system can be delivered, connected, and put into operation.“Industrial facilities will especially appreciate this. Companies that currently transport contaminated water in barrels as hazardous waste could handle part of the treatment themselves,” explains Karel. According to him, this would mean less waste, less logistics, and lower costs for companies.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/CXI_TUL_Kulicky_s_nanovlakennym_srdcem_Takhle_se_da_cistit_voda_lip_5_15c7bfefc3.jpg" alt="CXI TUL: Beads with a nanofiber core. This is a better way to purify water." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_CXI_TUL_Kulicky_s_nanovlakennym_srdcem_Takhle_se_da_cistit_voda_lip_5_15c7bfefc3.jpg 117w," sizes="100vw" width="768" height="1024"><h4>A Myth That Didn’t Pan Out</h4>Apart from the main project, Karel’s team asked themselves another question: Can microorganisms in a standard wastewater treatment plant biofilm on carriers break down micropollutants—that is, traces of medications or pesticides that end up in the water?Some studies suggested that this might be possible.But the enthusiasm quickly faded. “No degradation occurs. The micropollutants simply accumulate in the system,” Karel states. The system captures them but does not destroy them. That requires more powerful methods, such as ozone or UV radiation.<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/CXI_TUL_Kulicky_s_nanovlakennym_srdcem_Takhle_se_da_cistit_voda_lip_f8251f3b2e.jpg" alt="CXI TUL: Beads with a nanofiber core. This is a better way to purify water." srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_CXI_TUL_Kulicky_s_nanovlakennym_srdcem_Takhle_se_da_cistit_voda_lip_f8251f3b2e.jpg 110w," sizes="100vw" width="724" height="1024"><blockquote>The HYMNA project, part of the TREND program of the Technology Agency of the Czech Republic, in collaboration with ENVI-PUR, s.r.o. (principal investigator) and Pražské vodovody a kanalizace, a.s.</blockquote>

Beads with a nanofiber core. This is a better way to purify water.

<h3>How about a coffee break along with a bite of LC? Here you go!</h3><h4>Welcome to the webinar series dedicated to Liquid Chromatography: LC Coffee Breaks Free Webinar Series</h4>Each episode focuses on answering a specific challenge faced by chromatographers, helping you improve efficiency, solve problems faster, and stay up to date with the latest trends in Liquid Chromatography.<h4>Episode 1 Mastering Overpressure - Prevention and Solutions that Work</h4><ul><li>📆August 06, 2026</li><li>🕑14:00 CEST</li><li>Speaker: Walter Migliaccio (Sales Application Chemist, Waters)</li><li><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/webinar/6410">Registration</a></li></ul>Overpressure is a common LC challenge that can lead to downtime and unreliable results.&nbsp;Learn or review how to:<ul><li>Identify key causes and solve them</li><li>Prevent issues in practical ways</li></ul><h4>Episode 2 Strategies to Identify and Reduce Carryover</h4><ul><li>📆September 15, 2026</li><li>🕑14:00 CEST</li><li>Speaker: Andrea Hoehnel (Senior Sales Applications Chemist, Waters)</li><li><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/webinar/6418">Registration</a></li></ul>Carryover can compromise accuracy and productivity in LC analyses.&nbsp;Join this webinar to:<ul><li>gain actionable insights into detecting carryover sources&nbsp;</li><li>implement effective solutions for more robust and reproducible results.</li></ul><h4>Episode 3 From RI to CAD: How Universal LC Detectors Compare in Real World Performance</h4><ul><li>📆October 15, 2026</li><li>🕑14:00 CEST</li><li>Speaker: Pawel Bigos (Senior Scientist, Waters Corporation)</li><li><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/webinar/6419">Registration</a></li></ul>What will you learn<ul><li>Gain practical understand on detectors ideal use cases</li><li>Learn how to select the right universal detector to improve your analysis</li></ul><h4>Episode 4 Why My Method Doesn't Transfer Smoothly?</h4><ul><li>📆November 5, 2026</li><li>🕑14:00 CET</li><li>Speaker: Norris Wong (Senior Evaluation Scientist, Waters Corporation)</li><li><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/webinar/6420">Registration</a></li></ul>Method transfer issues can lead to delays, inconsistent data, and costly rework.Join this webinar to:<ul><li>Understand the root causes of transfer failures</li><li>Learn best practices for achieving reliable, reproducible liquid chromatography methods across different systems and environments</li></ul><h4>Episode 5 Binary or Quaternary? Choosing the Fit-for-Purpose Gradient System</h4><ul><li>📆December 17, 2026</li><li>🕑14:00 CET</li><li><a target="_blank" rel="noopener noreferrer" href="https://lcms.labrulez.com/webinar/6421">Registration</a></li></ul>Clearly understand the strengths, limitations, and impact of your gradient systems can make the difference in your method performances.Join this webinar to:&nbsp;<ul><li>Learn what to consider to select the best solution for your needs</li><li>Get practical tips to optimize your separations and support your analytical goals</li></ul><h4>Why you should attend</h4><ul><li>Get practical, users insights you can immediately apply in your daily LC laboratory work.&nbsp;</li><li>In just a short coffee-break session, you'll gain valuable tips on troubleshooting, method development, method transfer, technology updates, column chemistries, and real-world applications.</li></ul>

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