Separating, Filtering, Clarifying, Precipitating, and Still Machine Setters, Operators, and Tenders
SOC Code: 51-9012.00
ProductionSeparating, filtering, clarifying, precipitating, and still machine operators are the production technicians who manage the critical industrial processes that purify, concentrate, and isolate chemical and biological materials across a vast range of manufacturing industries. Earning a median wage of approximately $49,500 per year, these operators run the continuous-flow and batch processing equipment that underpins chemical production, pharmaceutical manufacturing, food and beverage processing, water treatment, and petroleum refining. Their work ensures that raw mixtures are transformed into pure, usable substances—whether that means clarifying drinking water, isolating active pharmaceutical ingredients, refining crude petroleum fractions, or separating fermentation products in a brewery or distillery. The role demands careful attention to process parameters, mechanical aptitude for maintaining complex equipment, and an understanding of the chemical and physical principles that govern separation processes. Reliable production of consistent, specification-compliant product depends directly on the skill and vigilance of these operators.
Salary Overview
Median
$49,500
25th Percentile
$41,830
75th Percentile
$61,350
90th Percentile
$75,860
Salary Distribution
Job Outlook (2024–2034)
Growth Rate
-4.3%
New Openings
5,400
Outlook
Decline
Key Skills
Knowledge Areas
What They Do
- Dump, pour, or load specified amounts of refined or unrefined materials into equipment or containers for further processing or storage.
- Monitor material flow or instruments, such as temperature or pressure gauges, indicators, or meters, to ensure optimal processing conditions.
- Set up or adjust machine controls to regulate conditions such as material flow, temperature, or pressure.
- Examine samples to verify qualities such as clarity, cleanliness, consistency, dryness, or texture.
- Communicate processing instructions to other workers.
- Maintain logs of instrument readings, test results, or shift production for entry in computer databases.
- Turn valves or move controls to admit, drain, separate, filter, clarify, mix, or transfer materials.
- Start agitators, shakers, conveyors, pumps, or centrifuge machines.
Tools & Technology
★ = Hot Technology (in-demand)
Education Requirements
Typical entry-level education: High School Diploma
Related Careers
Top Career Pivot Targets
View all 4 →Careers with the highest skill compatibility from Separating, Filtering, Clarifying, Precipitating, and Still Machine Setters, Operators, and Tenders.
A Day in the Life
An operator's shift begins with reviewing the previous shift's process log, checking current tank levels, flow rates, temperatures, and pressure readings against the specified operating parameters for each unit. Much of the workday is spent monitoring instrumentation panels—either physically walking the plant floor or watching distributed control system (DCS) displays—and adjusting setpoints, valves, and feed rates to keep processes running within spec. Operators collect process samples at prescribed intervals and deliver them to the lab for analysis, then adjust process conditions based on the analytical results. Equipment cleaning and sanitization are regular responsibilities, particularly in food and pharmaceutical operations where regulatory requirements for product purity are stringent. Shift handovers require careful verbal and written communication with the incoming crew to ensure continuity and flag any developing process issues that need monitoring.
Work Environment
Process operators in this field work in industrial plant environments that range from petroleum refineries and chemical plants to food processing facilities, water treatment plants, and pharmaceutical manufacturing suites—each with distinct physical environments and hazard profiles. Many facilities operate 24 hours per day, seven days a week, requiring rotating shift schedules that include nights, weekends, and holidays. The work environment can be physically demanding, involving regular walks across large plant floors, climbing ladders or platforms to check equipment, and performing valve and equipment manipulations. Exposure to chemical vapors, noise, heat, and industrial machinery is managed through engineering controls and personal protective equipment including hard hats, safety glasses, chemical-resistant gloves, and occasionally supplied-air respirators in confined spaces. Temperature extremes are common, particularly in outdoor process areas of refineries and large chemical plants.
Career Path & Advancement
Entry into this career most often begins as a general production operator or chemical process technician, learning the basic unit operations of a specific plant before specializing in separation and filtration equipment. After one to three years, operators typically demonstrate proficiency and reliability sufficient for promotion to senior operator or process technician roles with expanded equipment responsibilities. Five to eight years of experience can lead to shift supervisor, process lead, or equipment specialist positions at manufacturing facilities. Some operators pursue associate or bachelor's degrees in chemical technology or chemical engineering while working, which can open pathways into process engineering, quality, or operations management roles. The American Institute of Chemical Engineers (AIChE) and STLE (Society of Tribologists and Lubrication Engineers) offer professional development resources relevant to operators who want to deepen their process knowledge.
Specializations
Pharmaceutical and biotech separation operators work with highly regulated processes—ultrafiltration, chromatography, and centrifugal separation—used to isolate and purify biologic drugs, small molecule APIs, and vaccines, where product quality and documentation standards are among the most rigorous in any manufacturing sector. Petroleum refinery operators specialize in distillation columns, liquid-liquid extraction units, and gas-liquid separation systems that fractionate crude oil into gasoline, diesel, jet fuel, and petrochemical feedstocks. Food and beverage separation operators work with filtration, centrifugation, and evaporation equipment to clarify juices, concentrate dairy products, and control the fermentation and distillation processes in breweries, wineries, and distilleries. Water and wastewater treatment plant operators manage clarifiers, filtration beds, chemical precipitation tanks, and membrane systems to produce clean drinking water and treat industrial and municipal effluent.
Pros & Cons
Advantages
- ✓Strong employment across multiple industries—chemical, pharmaceutical, food/beverage, water, and petroleum—providing broad job market options
- ✓No four-year degree required; associate degrees and on-the-job training are the standard pathways
- ✓Consistent demand as separation processes are fundamental to manufacturing across the entire economy
- ✓Shift differentials for night and weekend work meaningfully boost effective annual earnings above the base wage
- ✓Pharmaceutical and biotech applications offer some of the highest wages in the process operator category
- ✓Tangible contribution to essential products including clean water, medicines, fuels, and food
- ✓Stable employment at large chemical and energy facilities, which typically have long operational lifespans
Challenges
- ✗Rotating shift work including nights, weekends, and holidays can significantly strain personal and family life
- ✗Chemical and physical hazards require constant safety vigilance and can create real occupational health risks over a career
- ✗Process upsets and equipment failures can create high-pressure, stressful situations that demand rapid diagnosis and decision-making
- ✗Many facilities require 12-hour shifts, which, while providing more days off, can be physically and mentally exhausting
- ✗Career advancement beyond senior operator or shift supervisor typically requires additional formal education
- ✗Some industrial environments—particularly outdoor petrochemical plants—involve exposure to extreme temperatures
- ✗Highly regulated industries like pharmaceuticals and water treatment impose strict documentation requirements that add significant administrative burden
Industry Insight
Automation and advanced process control continue to transform separation and filtration operations, with programmable logic controllers (PLCs), distributed control systems, and data analytics increasingly handling routine process adjustments that once required constant manual attention. This shift is elevating the skilled demands of the operator role, as workers must now understand control system interfaces, interpret data trends, and collaborate with engineers on process optimization—rather than performing purely mechanical tasks. Environmental regulations are driving significant investment in water treatment, industrial waste minimization, and emissions separation systems, creating steady demand for operators trained in these processes. The pharmaceutical and biomanufacturing sectors—among the highest-paying environments for separation operators—continue to grow as biotech pipelines add new complex biologic drugs that require sophisticated purification processes. The energy transition is creating new opportunities in emerging separation applications such as lithium extraction for battery production, hydrogen purification, and carbon capture systems.
How to Break Into This Career
A high school diploma or GED combined with strong math and science aptitude is the minimum entry requirement for most production operator positions in this field. Many employers prefer candidates with associate degrees or vocational certificates in chemical technology, process technology, or industrial operations, with Process Technology (PTEC) programs at community colleges providing particularly targeted preparation. Larger chemical and energy companies run structured apprenticeship and new-hire training programs that combine classroom instruction in process principles with supervised hands-on learning on actual production equipment. Relevant prior experience in any manufacturing, utilities, or industrial maintenance role demonstrates the work ethic and mechanical aptitude employers seek. Entry-level positions often require obtaining licenses or certifications specific to certain industries—for example, water treatment operator licenses are state-regulated and must be earned through examination.
Career Pivot Tips
Process operators moving between industries—from chemical to food processing or from petroleum to water treatment—often find that the fundamental separation and process control skills they've developed transfer well, even if specific equipment and regulatory requirements differ. Military veterans with chemical operations, nuclear propulsion, or industrial maintenance backgrounds are actively recruited by chemical plants and refineries that value disciplined, safety-focused operators. Manufacturing workers from adjacent fields such as pulp and paper, mining, or plastics processing have highly applicable equipment operation and process monitoring skills. Earning water treatment operator certification is a particularly accessible entry point for career changers, as state licensing programs are well-structured and community college preparation courses are widely available. Process operators who want to advance into engineering or management roles should pursue continuing education in chemical technology or industrial operations while gaining practical experience on the job.
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